NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM; 2023 MY RAV4 [10/2022

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM1000000026P8B
Model Year Start: 2023	Model: RAV4	Prod Date Range: [10/2022 - 10/2023]
Title: NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM; 2023 MY RAV4 [10/2022 - 10/2023]

DIAGNOSIS SYSTEM

CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION

(a) The systems (ECUs and sensors) that use CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed to the vehicle.

(1) Techstream display and installed systems

HINT:

The names of ECUs and sensors shown on the Techstream display may differ from those shown in DTC Table by ECU.

Connected to	Code	ECU/Sensor Name	Techstream Display	Applicability
-	CGW	Central gateway ECU (network gateway ECU)	-	Installed on all vehicles
V Bus	DLC3	DLC3	-	Installed on all vehicles
Bus 1	F-CAM	Forward recognition camera	Front Camera Module	Installed on all vehicles
	F-MR	Millimeter wave radar sensor assembly	Front Radar	Installed on all vehicles
	CS	Clearance warning ECU assembly	Clearance Warning (Intuitive Parking Assist)	w/ Intuitive Parking Assist System
	PAC	Parking assist ECU	Panoramic View Monitor	w/ Panoramic View Monitor System
	BSM	Blind spot monitor sensor LH	Blind Spot Monitor Master	w/ Blind Spot Monitor System
	EIM	Inner rear view mirror assembly	Digital Rear-View Mirror	w/ Garage Door Opener System (for Digital Inner Mirror Type)
	R-CA	Television camera assembly	Parking Assist Monitor System / Rear Camera	w/ Parking Assist Monitor System
Bus 2	S&S	Engine stop and start ECU	Stop and Go/Start	w/ Stop and Start System
Bus 2	ENG	ECM	ECM (Engine)	Installed on all vehicles
Bus 3	AV	Radio and display receiver assembly	Display and Navigation (AVN)	for Radio and Display Type
	DCM	DCM (telephone transceiver assembly)	DCM	w/ Telematics System
	YGW	Bus buffer ECU	Accessory Gateway	w/ Bus Buffer ECU
Bus 4	TPMS	Tire pressure warning ECU and receiver	Tire Pressure	w/ Tire Pressure System (Tire Inflation Pressure Display Function)
	OCS	Occupant detection ECU	Occupant Detection	Installed on all vehicles
	STR	Steering sensor	Spiral Cable (Steering Angle Sensor)	Installed on all vehicles
	AWD	4WD ECU assembly	Four Wheel Drive Control	for AWD
	BRK	Brake actuator assembly (skid control ECU)	Skid Control (ABS/VSC/TRAC)	Installed on all vehicles
	EPS	Rack and pinion power steering gear assembly	Power Steering (EPS)	Installed on all vehicles
	SRS	Airbag ECU assembly	Airbag	Installed on all vehicles
Bus 5	MB	Main body ECU (multiplex network body ECU)	Main Body	Installed on all vehicles
	A/C	Air conditioning amplifier assembly	Air Conditioning Amplifier	Installed on all vehicles
	SMT	Certification ECU (smart key ECU assembly)	Certification (Smart)	w/ Smart Key System
	BKD	Multiplex network door ECU	Back Door	w/ Power Back Door System
	DST	Position control ECU assembly	D-Seat	w/ Memory
	MET	Combination meter assembly	Combination Meter	Installed on all vehicles

NOTICE:

The following communication bus check screen is provided only as an example. This screen differs from the actual screen for this vehicle.

Description of "Communication Bus Check" Screen

HINT:

The ECUs and sensors that are normally connected to the CAN communication system are displayed on the Techstream.

(a) Select "Communication Bus Check" on the menu screen of the Techstream.

CAN Bus Check

HINT:

If items are not selected correctly in the vehicle specification pop up screen, the name of the CAN junction connector to which the ECUs or sensors are connected may not be displayed on the "Communication Bus Check" screen.

(b) Confirm that the "Communication Bus Check" screen is displayed and the ECUs and sensors that are normally connected to the CAN communication system are displayed.

HINT:

Even if an ECU or sensor that is connected to a bus that is monitored by a bus monitoring ECU (gateway function equipped ECU) is not communicating, it will remain displayed on the "Communication Bus Check" screen.
When an ECU or sensor that is connected to a bus that is not monitored by a bus monitoring ECU (gateway function equipped ECU) is not displayed on the "Communication Bus Check" screen, it means that it is not communicating.

(c) The default display setting selected on the combo box is ALL. When checking for ECUs or sensors for a specific bus, choose the bus from the drop down list. ALL, each bus, each sub bus and Central Gateway are listed in the drop down list.

Combo box

Background color is red or yellow

Item	Detail
Combo box: ALL	Displays all ECUs and sensors connected to the central bus and sub buses.
Combo box: Bus	Displays ECUs and sensors connected to the selected bus.
Combo box: Sub bus	Displays ECUs and sensors connected to the selected sub bus.
Combo box: Central Gateway	Displays all ECUs and sensors connected to the central bus.

NOTICE:

When using the combo box, it may be possible to select a sub bus from the drop down list that does not have any connected ECUs or sensors. This is not a malfunction and occurs when there is no optional device connected to a sub bus which is monitored by a sub bus monitoring ECU (gateway function equipped ECU).
In the drop down list, all sub buses applicable to the model are displayed (e.g. LIN communication sub buses are also displayed). For information on sub buses necessary to diagnose the CAN communication system, refer to System Diagram.
Click here

HINT:

The background color of an ECU or sensor changes according to its connection status as indicated in the following table.

Description of "Communication Bus Check" Screen

Bus Type	Background Color	Connection Status
Bus	White	Communication has been normal.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Currently not communicating (either of the following): Not communicating since the start of the CAN bus check Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
	Not displayed	Either of the following: The central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the Techstream.4 No ECUs or sensors are connected to the bus.5
Sub bus with a gateway function equipped ECU that does not memorize connected ECUs or sensors*2	White	Communication has been normal since the start of the CAN bus check.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
Sub bus with a gateway function equipped ECU that memorizes connected ECUs and sensors*3	White	Communication has been normal.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Currently not communicating (either of the following): Not communicating since the start of the CAN bus check Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
	Not displayed	Either of the following: The gateway function equipped ECU cannot communicate with the central gateway ECU.6 No ECUs or sensors are connected to the sub bus.7

Gateway function equipped ECUs relay signals between ECUs and sensors connected to different buses.
*1: An ECU or sensor is installed to the vehicle but is not displayed on the "Communication Bus Check" screen.
*2: The gateway function equipped ECU does not memorize ECUs and sensors connected to its respective sub bus.
*3: The gateway function equipped ECU memorizes ECUs and sensors connected to its respective sub bus.
*4: When the central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the Techstream, the name of buses, sub buses, ECUs and sensors will not be displayed.
*5: When no ECUs or sensors are connected to a bus, the message "There is no system found on the communication Bus." will be displayed.
*6: When a gateway function equipped ECU cannot communicate with the central gateway ECU (network gateway ECU), the name of sub buses and ECUs or sensors connected to the sub bus will not be displayed.
*7: When no ECUs or sensors are connected to the sub bus, the message "There is no system found on the communication Bus." will be displayed.
If there is no communication between the Techstream and the vehicle, or no ECUs or sensors are displayed as connected, check the central gateway ECU (network gateway ECU) and diagnosis bus (The bus that connects the DLC3 to the central gateway ECU (network gateway ECU)) for malfunctions.

(d) Monitor the screen for any ECU or sensor connection status changes for a period of 2 minutes.

HINT:

If an open occurs in one of the wires of a CAN branch line, it may interfere with the communication of other ECUs or sensors resulting in an incorrect state being displayed.
If the connection status changes intermittently during the inspection, repair the open in the branch line of the ECU or sensor that is not communicating, and then perform Communication Bus Check again.

NOTICE:

The following communication bus check screen is provided only as an example. This screen differs from the actual screen for this vehicle.

Description of "Communication Bus Check (Detail)" Screen

HINT:

The communication error history of ECUs or sensors which have communication error history can be displayed on the "Communication Bus Check (Detail)" screen.

(a) Select "Communication Bus Check" on the menu screen of the Techstream.

CAN Bus Check

HINT:

(b) Select "Detail" on the "Communication Bus Check" screen.

Communication Bus Check (Detail)

(c) Confirm that the "Communication Bus Check (Detail)" screen is displayed and the communication error history of the ECUs or sensors up to present is displayed.

HINT:

Lost Communication Time and Lost Communication Trip are only displayed for the central bus.
Lost Communication Time and Lost Communication Trip are not displayed for sub buses.

(d) The default display setting selected on the combo box is ALL. When checking for ECUs or sensors for a specific bus, choose the bus from the drop down list. ALL, each bus, each sub bus and Central Gateway are listed in the drop down list.

Combo box

Background color is red

Item	Detail
Combo box: ALL	Displays all ECUs and sensors connected to the central bus and sub buses.
Combo box: Bus	Displays ECUs and sensors connected to the selected bus.
Combo box: Sub bus	Displays ECUs and sensors connected to the selected sub bus.
Combo box: Central Gateway	Displays all ECUs and sensors connected to the central bus.
Bus Monitoring ECU	Displays the gateway function equipped ECU which monitors the selected bus or sub bus.
Current Trip	Displays the total number of trips up to now*
Lost Communication Time(s)	Displays the longest period of time in seconds that the ECU or sensor connected to the central bus was not communicating.
Lost Communication Trip	Displays the trip in which the longest period of time that the ECU or sensor connected to the central bus was not communicating occurred.

*: If the component has been replaced with a new one, the total number of trips after the replacement is displayed.

NOTICE:

The Lost Communication Time column displays the longest period of time in seconds that the central gateway ECU (network gateway ECU) detected a communication stop in the respective ECU or sensor.
The Lost Communication Trip column displays the trip in which the central gateway ECU (network gateway ECU) detected the longest communication stop in the respective ECU or sensor.
When using the combo box, it may be possible to select a sub bus from the drop down list that does not have any connected ECUs or sensors. This is not a malfunction and occurs when there is no optional device connected to a sub bus which is monitored by a sub bus monitoring ECU (gateway function equipped ECU).
In the drop down list, all sub buses applicable to the model are displayed (e.g. LIN communication sub buses are also displayed). For information on sub buses necessary to diagnose CAN communication system, refer to the System Diagram.
Click here

HINT:

The background color of an ECU or sensor changes according to its connection status as indicated in the following table.

Description of "Communication Bus Check (Detail)" Screen

Bus Type	Background Color	Connection Status
Bus	White	Either of the following: Communication has been normal. Lost Communication Time is below 6 seconds.
	Red	Lost Communication Time is 6 seconds or more.
	Not displayed	Either of the following: The central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the Techstream.1 No ECUs or sensors are connected to the bus.2
Sub bus	White	Lost Communication Time is displayed as "-".
Sub bus	Not displayed	Either of the following: The gateway function equipped ECU cannot communicate with the central gateway ECU.3 No ECUs or sensors are connected to the sub bus.4

If there is no communication between the Techstream and the vehicle, or no ECUs or sensors are displayed as connected, check the central gateway ECU (network gateway ECU) and diagnosis bus (The bus that connects the DLC3 to the central gateway ECU (network gateway ECU)) for malfunctions.
Lost Communication Time and Lost Communication Trip are not displayed for sub buses.
*1: When the central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the Techstream, the name of buses, sub buses, ECUs and sensors will not be displayed.
*2: When no ECUs or sensors are connected to a bus, the message "There is no system found on the communication Bus." will be displayed.
*3: When a gateway function equipped ECU cannot communicate with the central gateway ECU (network gateway ECU), the name of sub buses and ECUs or sensors connected to the sub bus will not be displayed.
*4: When no ECUs or sensors are connected to the sub bus, the message "There is no system found on the communication Bus." will be displayed.

Communication Bus Check (Communication Malfunction Check)

HINT:

DTCs related to CAN communication are displayed for each ECU on the Techstream.

(a) Select "Communication Bus Check" on the menu screen of the Techstream.

CAN Bus Check

(b) Select "Communication Malfunction Check" on the "Communication Bus Check" screen.

Communication Malfunction Check

(c) Confirm that the "Communication Malfunction Check" screen is displayed and CAN communication DTCs for each ECU are displayed.

HINT:

When there are no CAN communication DTCs stored, no DTCs will be displayed.

How to Use "Communication Bus Check" Screen in Inspection

NOTICE:

The following CAN bus wiring diagram or communication bus check screen is provided only as an example. This wiring diagram or screen differs from the actual one for this vehicle.

HINT:

If the CAN communication system is currently malfunctioning, it is recommended to use Communication Bus Check rather than Communication DTCs for determining the suspected area.
Turn the ignition switch to ON, or perform the necessary operations to reproduce the problem symptom, select "Communication Bus Check" and wait approximately 2 minutes. Check the communication status of each ECU or sensor on the screen while performing this operation.

(a) If the CAN communication system is currently malfunctioning, determine the suspected area through Communication Bus Check as follows:

Problem Symptoms Table

Problem Symptom Pattern	Display on Communication Bus Check Screen	Suspected Area
A	Almost all of the ECUs and sensors connected to the malfunctioning CAN bus are displayed as not communicating on the "Communication Bus Check" screen.	Short between CAN bus lines (CANH and CANL) Short to +B in a CAN bus line (CANH or CANL) Short to ground in a CAN bus line (CANH or CANL)
B	ECUs or sensors farther from the central gateway ECU (network gateway ECU) than the open in the wires are displayed as not communicating on the "Communication Bus Check" screen.	Open in both wires of a main bus line in the central bus
C	One ECU or sensor is displayed as not communicating on the "Communication Bus Check" screen.	Open in both wires of a branch line connected to an ECU or sensor in the central bus Internal malfunction of an ECU or sensor in the central bus Malfunction in the power supplied to an ECU or sensor in the central bus
D	No ECUs or sensors are displayed on the "Communication Bus Check" screen.	Internal malfunction of the central gateway ECU (network gateway ECU) Malfunction in the power supplied to the central gateway ECU (network gateway ECU) Open in both wires of the branch line in the diagnosis bus (DLC3 - Central gateway ECU (network gateway ECU)) Short between CAN bus lines (CANH and CANL) in the diagnosis bus (DLC3 - Central gateway ECU (network gateway ECU)) Short to +B in a CAN bus line (CANH or CANL) in the diagnosis bus (DLC3 - Central gateway ECU (network gateway ECU)) Short to ground in a CAN bus line (CANH or CANL) in the diagnosis bus (DLC3 - Central gateway ECU (network gateway ECU))
E	One ECU or sensor is displayed as not communicating in multiple buses on the "Communication Bus Check" screen.	Internal malfunction of an ECU or sensor connected to multiple buses Malfunction in the power supplied to an ECU or sensor connected to multiple buses
F	Some ECUs or sensors are displayed as not communicating in the central bus and other ECUs or sensors are displayed as not communicating in a sub bus.	Open in a wire of a branch line connected to an ECU or sensor in the central bus Internal malfunction of an ECU or sensor in the central bus
G	A gateway function equipped ECU is displayed as not communicating in the central bus and ECUs and sensors connected to its respective sub bus are not displayed.	Open in both wires of a branch line connected to a gateway function equipped ECU Internal malfunction of a gateway function equipped ECU Malfunction in the power supplied to a gateway function equipped ECU
H	One ECU or sensor is displayed as not communicating in a sub bus on the "Communication Bus Check" screen.	Open in both wires of a branch line connected to an ECU or sensor in a sub bus Internal malfunction of an ECU or sensor in a sub bus Malfunction in the power supplied to an ECU or sensor in a sub bus
I	ECUs or sensors farther from the sub bus monitoring ECU (gateway function equipped ECU) than the open in the wires are displayed as not communicating on the "Communication Bus Check" screen.	Open in both wires of a main bus line in a sub bus

(b) Problem Symptom Pattern A

Details of Malfunction

Short between CAN bus lines (CANH and CANL) in Bus 2
Short to +B in a CAN bus line (CANH or CANL) in Bus 2
Short to ground in a CAN bus line (CANH or CANL) in Bus 2

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

Due to the malfunction, almost all of the ECUs and sensors connected to Bus 2 will be displayed as not communicating and their background color will be red.
The malfunction in Bus 2 will not affect the other buses.
The malfunctioning part can be determined by inspecting for an open in the main bus line, a short between bus lines or a short to +B or ground.
Make sure to perform the inspection to measure resistances of buses to determine the cause of the malfunction.

Details of Malfunction

Short between CAN bus lines (CANH and CANL) in Bus 4
Short to +B in a CAN bus line (CANH or CANL) in Bus 4
Short to ground in a CAN bus line (CANH or CANL) in Bus 4

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red
*g	Not displayed	-	-

HINT:

Due to the malfunction, almost all of the ECUs and sensors connected to Bus 4 will be displayed as not communicating and their background color will be red.
The malfunction will not affect the other buses of the central bus. However, the sub bus connected to Bus 4 is likely to be affected. the gateway function equipped ECU connected to Bus 4 will not communicate and consequently the sub bus and its respective ECUs or sensors monitored by the gateway function equipped ECU (sub bus monitoring ECU) will not be displayed, indicating that the gateway function equipped ECU is not communicating with the central gateway ECU (network gateway ECU).
The malfunctioning part can be determined by inspecting for an open in the main bus line, a short between bus lines or a short to +B or ground.
Make sure to perform the inspection to measure resistances of buses to determine the cause of the malfunction.

Details of Malfunction

Open in both wires of the main bus line between the CGW and No. 1 CAN junction connector in Bus 2

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

Due to the malfunction, almost all of the ECUs and sensors connected to Bus 2 will be displayed as not communicating and their background color will be red.
The malfunction in Bus 2 will not affect the other buses.
The malfunctioning part can be determined by inspecting for an open in the main bus line.
Make sure to perform the inspection to measure resistances of buses to determine the cause of the malfunction.

Details of Malfunction

Open in both wires of the main bus line between the No. 1 CAN junction connector and No. 2 CAN junction connector in Bus 2

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

Due to the malfunction, ECUs or sensors farther from the CGW than the open in the wires will be displayed as not communicating and their background color will be red.
The malfunction in Bus 2 will not affect the other buses.
The malfunctioning part can be determined by inspecting for an open in the main bus line.
Make sure to perform the inspection to measure resistances of buses to determine the cause of the malfunction.

Details of Malfunction

Open in both wires of the main bus line between the No. 2 CAN junction connector and ENG in Bus 2

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red
*g	Pattern 1	*h	Pattern 2

HINT:

Even when the same part of the main bus line is open, depending on internal electrical noise which changes according to the position of the open in the line, the information displayed on the "Communication Bus Check" screen may differ.
In pattern 2, the information displayed may be the same as when there is an open in both wires in the main bus line between the No. 1 CAN junction connector and No. 2 CAN junction connector, which may make it difficult to determine the malfunctioning part.
The malfunction in Bus 2 will not affect the other buses.
Make sure to perform the inspection to measure resistances of buses to determine the cause of the malfunction.

(d) Problem Symptom Pattern C

Details of Malfunction

Open in both wires of the branch line connected to F-MGC in Bus 2

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

The information displayed on the "Communication Bus Check" screen will be the same for an open in both wires of a branch line, an internal malfunction of an ECU or sensor or a malfunction in the power supplied to an ECU or sensor. In this example, the background color of the malfunctioning ECU or sensor will be red.

Details of Malfunction

Internal malfunction of F-MGC in Bus 2
Malfunction in the power supplied to F-MGC in Bus 2

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

Details of Malfunction

Open in both wires of the branch line connected to ENG in Bus 4

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

The malfunction in Bus 4 will not affect the other buses.
Due to the malfunction, although ENG is communicating normally with CGW via Bus 2, it is not communicating with CGW via Bus 4. Consequently, it will be displayed as not communicating in Bus 4.

(e) Problem Symptom Pattern D

Details of Malfunction

Internal malfunction of the CGW
Malfunction in the power supplied to the CGW

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Not displayed

HINT:

When there is no communication between the Techstream and the vehicle, no ECUs or sensors will be displayed.

Details of Malfunction

Open in both wires of the branch lines in the diagnosis bus

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Not displayed

HINT:

When there is no communication between the Techstream and the vehicle, no ECUs or sensors will be displayed.

(f) Problem Symptom Pattern E

Details of Malfunction

Internal malfunction of BRK
Malfunction in the power supplied to BRK

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

The information displayed on the "Communication Bus Check" screen will be the same for an internal malfunction of an ECU or sensor, or a malfunction in the power supplied to an ECU or sensor.

Due to the malfunction, BRK is not communicating with the CGW via both Bus 2 and Bus 4. Consequently, the background color of BRK will be red for both Bus 2 and Bus 4.

(g) Problem Symptom Pattern F

Details of Malfunction

Open in a wire of the branch line connected to HV in Bus 4
Internal malfunction of HV in Bus 4

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red
*g	Background color intermittently becomes yellow or red	*h	Not displayed or background color is yellow or red

HINT:

In the "Communication Bus check" screen shown in the illustration, electrical noise in the CAN bus caused by an open in a wire in the branch line connected to HV interferes with the communication of MB causing unstable communication. Also, since MB is a gateway function equipped ECU, communication of ECUs connected to its respective sub bus will also be unstable.
In the "Communication Bus Check" screen shown in the illustration, because the background color of HV is red, it is suspected that HV is the most likely cause of the malfunction. Therefore, it is suspected that HV is not communicating.

(h) Problem Symptom Pattern G

Details of Malfunction

Open in both wires of the branch line connected to MB in Bus 4
Internal malfunction of MB in Bus 4
Malfunction in the power supplied to MB in Bus 4

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red
*g	Not displayed	-	-

HINT:

If there is a communication malfunction in a gateway function equipped ECU, ECUs connected to its respective sub bus will also be affected and will not be displayed.
In the "Communication Bus Check" screen shown in the illustration, MB is a gateway function equipped ECU. Therefore, MB is suspected as not communicating.

(i) Problem Symptoms Pattern H

Details of Malfunction

Internal malfunction of MIR-L in the sub bus
Malfunction in the power supplied to MIR-L in the sub bus

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

The malfunction in the sub bus will not affect the other buses.
When a gateway function equipped ECU memorizes ECUs and sensors connected to its respective sub bus and there is a communication malfunction in one of the ECUs or sensors, the background color of the ECU or sensor will change to red and the ECU or sensor will remain displayed.
The information displayed on the "Communication Bus Check" screen will be the same for an open in both wires of a branch line, an internal malfunction of an ECU or sensor or a malfunction in the power supplied to an ECU or sensor.

Details of Malfunction

Open in both wires of the branch line connected to MIR-L in the sub bus

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

The malfunction in the sub bus will not affect the other buses.
When a gateway function equipped ECU memorizes ECUs and sensors connected to its respective sub bus and there is a communication malfunction in one of the ECUs or sensors, the background color of the ECU or sensor will change to red and the ECU or sensor will remain displayed.
The information displayed on the "Communication Bus Check" screen will be the same for an open in both wires of a branch line, an internal malfunction of an ECU or sensor or a malfunction in the power supplied to an ECU or sensor.

(j) Problem Symptom Pattern I

Details of Malfunction

Open in both wires of the main bus line in the sub bus

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

HINT:

Due to the malfunction, ECUs or sensors farther from the sub bus monitoring ECU (gateway function equipped ECU) than the open in the wires will be displayed as not communicating and their background color will be red.

How to Use "Communication Bus check (Detail)" Screen in Inspection

(a) If the CAN communication system is currently normal but has communication stop history, determine the malfunctioning part using Communication Bus Check (Detail) as follows:

NOTICE:

The following CAN bus wiring diagram or communication bus check screen is provided only as an example. This wiring diagram or screen differs from the actual one for this vehicle.
The Lost Communication Time column displays the longest period of time in seconds that the central gateway ECU (network gateway ECU) detected a communication stop in the respective ECU or sensor.
The Lost Communication Trip column displays the trip in which the central gateway ECU (network gateway ECU) detected the longest communication stop in the respective ECU or sensor.
When using the combo box, it may be possible to select a sub bus from the drop down list that does not have any connected ECUs or sensors. This is not a malfunction and occurs when there is no optional device connected to a sub bus which is monitored by a sub bus monitoring ECU (gateway function equipped ECU).
In the drop down list, all sub buses applicable to the model are displayed (e.g. LIN communication sub buses are also displayed). For information on sub buses necessary to diagnose CAN communication system, refer to the System Diagram.
Click here

HINT:

If the CAN communication system is currently malfunctioning, it is recommended to use Communication Bus Check rather than Communication Bus Check (Detail) for determining the suspected area.
The communication error history of ECUs or sensors which have communication error history can be displayed on the "Communication Bus Check (Detail)" screen.
Lost Communication Time and Lost Communication Trip are only displayed for the central bus.
Lost Communication Time and Lost Communication Trip are not displayed for sub buses.

(b) If there is an ECU or sensor displayed with a red background on the "Communication Bus Check (Detail)" screen to indicate that it was not communicating, it is suspected that the ECU or sensor was not communicating.

Details of Malfunction

Past malfunction in the wire harness or power supplied to F-MGC in Bus 2

*a	Bus 2	*b	Bus 4
*c	Sub bus	*d	Diagnosis bus
*e	Location of malfunction	*f	Background color is red

Description of "Communication Bus Check (Detail)" Screen

Bus Type	Background Color	Connection Status
Bus	White	Either of the following: Communication has been normal. Lost Communication Time is below 6 seconds.
	Red	Lost Communication Time is 6 seconds or more.
	Not displayed	Either of the following: The central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the Techstream.1 No ECUs or sensors are connected to the bus.2
Sub bus	White	Lost Communication Time is displayed as "-".
Sub bus	Not displayed	Either of the following: The gateway function equipped ECU cannot communicate with the central gateway ECU.3 No ECUs or sensors are connected to the sub bus.4

HINT:

Check the values of Lost Communication Trip and Current Trip for the ECUs or sensors that have a red background color.
If the values of Lost Communication Trip and Current Trip are the same for an ECU or sensor, the ECU or sensor is currently not communicating. In this case, it is recommended to use Communication Bus Check rather than Communication Bus Check (Detail) for determining the suspected area.
In the "Communication Bus Check (Detail)" screen shown in the illustration, F-MGC had a communication malfunction in the 10th trip. Thus, it is suspected that F-MGC was not communicating.
*1: When the central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the Techstream, the name of buses, sub buses, ECUs and sensors will not be displayed.
*2: When no ECUs or sensors are connected to a bus, the message "There is no system found on the communication Bus." will be displayed.
*3: When a gateway function equipped ECU cannot communicate with the central gateway ECU (network gateway ECU), the name of sub buses and ECUs or sensors connected to the sub bus will not be displayed.
*4: When no ECUs or sensors are connected to the sub bus, the message "There is no system found on the communication Bus." will be displayed.

DTC TABLE BY ECU

HINT:

In the CAN communication system, the CAN communication DTCs of each ECU can be displayed using the Techstream.
If CAN communication system DTCs are output, the malfunction cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting.
Click here
If there is a malfunction currently, DTCs can be checked by performing steps in the DTC check procedure.

(a) ECM / Techstream Display "Engine"

HINT:

DTC communication uses the CAN communication system.

Powertrain > Engine > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
*: Refer to SFI System Click here
U010187*	Lost Communication with TCM Missing Message	Communication stop occurs inside ECM (engine control function and transmission control function) continuously for approximately 2 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the ECM is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 3 seconds.	The MIL (Malfunction indicator lamp) illuminates.	-	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stop occurs between the ECM and brake actuator assembly (skid control ECU) continuously for 5 seconds or more.	All conditions are met: Approximately 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the ECM is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U015587	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	Communication stop occurs between the ECM and combination meter assembly continuously for approximately 3 seconds or more.	All conditions are met: Approximately 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the ECM is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 6 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U028487	Lost Communication with Active Grille Air Shutter Module "A" Missing Message	Communication stop occurs between the ECM and swing grille actuator assembly continuously for approximately 11 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the ECM is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 14 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U110387	Lost Communication with Stop and Start Control Module Missing Message	Communication stop occurs between the ECM and the engine stop and start ECU continuously for 1 second or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the ECM is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 2 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(b) ECM / Techstream Display "Transmission"

HINT:

DTC communication uses the CAN communication system.

Powertrain > Transmission > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
*: Refer to Automatic Transmission System for 2WD: Click here for AWD: Click here
U010087*	Lost Communication with ECM/PCM "A" Missing Message	Communication stop occurs inside ECM (engine control function and transmission control function) continuously for 1 second or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the ECM is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 2 seconds.	The MIL (Malfunction indicator lamp) illuminates.	-	DTC is stored until it is cleared using the Techstream.
U110387	Lost Communication with Stop and Start Control Module Missing Message	Communication stop occurs between the ECM and the engine stop and start ECU continuously for 1 second or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the ECM is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 2 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

HINT:

DTC communication uses the CAN communication system.

Powertrain > Stop and Start > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stop occurs between the engine stop and start ECU and ECM continuously for 1 second or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 4 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.
U010187	Lost Communication with TCM Missing Message	Communication stop occurs between the engine stop and start ECU and ECM continuously for approximately 11 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 14 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stop occurs between the engine stop and start ECU and steering sensor continuously for 1 second or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 4 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stop occurs between the engine stop and start ECU and brake actuator assembly (skid control ECU) continuously for approximately 3 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 6 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.
U013187	Lost Communication with Power Steering Control Module Missing Message	Communication stop occurs between the engine stop and start ECU and the rack and pinion power steering gear assembly continuously for 1 second or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 4 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stop occurs between the engine stop and start ECU and main body ECU (multiplex network body ECU) continuously for approximately 4 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 7 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.
U015187	Lost Communication with Restraints Control Module Missing Message	Communication stop occurs between the engine stop and start ECU and airbag ECU assembly continuously for approximately 11 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 14 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.
U016487	Lost Communication with HVAC Control Module Missing Message	Communication stop occurs between the engine stop and start ECU and air conditioning amplifier assembly continuously for approximately 11 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 14 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.
U023A87	Lost Communication with Image Processing Module "A" Missing Message	Communication stop occurs between the engine stop and start ECU and forward recognition camera continuously for 11 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 14 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.
U111087	Lost Communication with Clearance Sonar Module Missing Message	Communication stop occurs between the engine stop and start ECU and clearance warning ECU assembly continuously for 1 second or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the engine stop and start ECU is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 4 seconds.	The stop and start indicator blinks.	-	DTC is stored until it is cleared using the Techstream.

(d) Brake Actuator Assembly (Skid Control ECU) / Techstream Display "Brake/EPB*"

HINT:

DTC communication uses the CAN communication system.
EPB*: Electric Parking Brake

Chassis > Brake/EPB > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U007488	Control Module Communication Bus "B" Off Bus Off	The brake actuator assembly (skid control ECU) cannot send and receive data (The bus is off) for approximately 1 second or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the brake actuator assembly (skid control ECU) is 9.6 V or higher.	Turn the ignition switch to ON and wait at least approximately 4 seconds.	The ABS warning light illuminates. The slip indicator light illuminates. The brake hold operated indicator light blinks. The brake warning light (red) illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stop occurs between the brake actuator assembly (skid control ECU) and ECM continuously for 2 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the brake actuator assembly (skid control ECU) is 9.6 V or higher. The vehicle speed is 6 km/h (4 mph) or more.	Drive the vehicle for 5 seconds or more at a speed of 6 km/h (4 mph) or more.	The slip indicator light illuminates. The brake hold operated indicator light blinks. The electric parking brake auto off indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U010187	Lost Communication with TCM Missing Message	Communication stop occurs between the brake actuator assembly (skid control ECU) and ECM continuously for 2 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the brake actuator assembly (skid control ECU) is 9.6 V or higher. The vehicle speed is 6 km/h (4 mph) or more.	Drive the vehicle for 5 seconds or more at a speed of 6 km/h (4 mph) or more.	The slip indicator light illuminates. The brake hold operated indicator light blinks. The electric parking brake auto off indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012587	Lost Communication with Multi-axis Acceleration Sensor Module Missing Message	Communication stop occurs between the brake actuator assembly (skid control ECU) and airbag ECU assembly continuously for 1 second or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the brake actuator assembly (skid control ECU) is 9.6 V or higher. The vehicle speed is 6 km/h (4 mph) or more.	Drive the vehicle for 4 seconds or more at a speed of 6 km/h (4 mph) or more.	The slip indicator light illuminates. The brake hold operated indicator light blinks. The electric parking brake auto off indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stop occurs between the brake actuator assembly (skid control ECU) and steering sensor continuously for 1 second or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the brake actuator assembly (skid control ECU) is 9.6 V or higher. The vehicle speed is 6 km/h (4 mph) or more.	Drive the vehicle for 4 seconds or more at a speed of 6 km/h (4 mph) or more.	The slip indicator light illuminates. The brake hold operated indicator light blinks.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stop occurs between the brake actuator assembly (skid control ECU) and main body ECU (multiplex network body ECU) continuously for 2 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the brake actuator assembly (skid control ECU) is 9.6 V or higher. The vehicle speed is 6 km/h (4 mph) or more.	Drive the vehicle for 5 seconds or more at a speed of 6 km/h (4 mph) or more.	The electric parking brake auto off indicator light illuminates. The brake hold operated indicator light blinks.	-	DTC is stored until it is cleared using the Techstream.
U015187	Lost Communication with Restraints Control Module Missing Message	Communication stop occurs between the brake actuator assembly (skid control ECU) and airbag ECU assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the brake actuator assembly (skid control ECU) is 9.6 V or higher. The vehicle speed is 6 km/h (4 mph) or more.	Drive the vehicle for 8 seconds or more at a speed of 6 km/h (4 mph) or more.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U110387	Lost Communication with Stop and Start Control Module Missing Message	Communication stop occurs between the brake actuator assembly (skid control ECU) and the engine stop and start ECU continuously for 2 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the brake actuator assembly (skid control ECU) is 9.6 V or higher. The vehicle speed is 6 km/h (4 mph) or more.	Drive the vehicle for 5 seconds or more at a speed of 6 km/h (4 mph) or more.	The electric parking brake auto off indicator light illuminates. The brake hold operated indicator light blinks.	-	DTC is stored until it is cleared using the Techstream.

(e) Rack and Pinion Power Steering Gear Assembly / Techstream Display "EMPS" (for Type A)

HINT:

DTC communication uses the CAN communication system.

Chassis > EMPS > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stop occurs between the rack and pinion power steering gear assembly and steering sensor continuously for approximately 2 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the rack and pinion power steering gear assembly is 9 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stop occurs between the rack and pinion power steering gear assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the rack and pinion power steering gear assembly is 9 V or higher.	Turn the ignition switch to ON and wait at least approximately 10 seconds.	The EPS warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(f) Rack and Pinion Power Steering Gear Assembly / Techstream Display "EMPS" (for Type B)

HINT:

DTC communication uses the CAN communication system.

Chassis > EMPS > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0100	Lost Communication with ECM/PCM "A"	Communication stop occurs between the rack and pinion power steering gear assembly and ECM continuously for 5 minutes or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the rack and pinion power steering gear assembly is 9 V or higher. The vehicle speed is 20 km/h (12 mph) or more.	Drive the vehicle for approximately 5 minutes or more at a speed of 20 km/h (12 mph) or more.	-	-	DTC remains stored only while malfunction is occurring.
U0100	Lost Communication with ECM/PCM "A"	Communication stop occurs between the rack and pinion power steering gear assembly and ECM continuously for approximately 3 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the rack and pinion power steering gear assembly is 9 V or higher.	Turn the ignition switch to ON and wait at least approximately 6 seconds.	-	-	DTC remains stored only while malfunction is occurring.
U0126	Lost Communication With Steering Angle Sensor Module	Communication stop occurs between the rack and pinion power steering gear assembly and steering sensor continuously for 2 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the rack and pinion power steering gear assembly is 9 V or higher.	Turn the ignition switch to ON and wait at least 5 seconds.	-	-	DTC remains stored only while malfunction is occurring.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the rack and pinion power steering gear assembly and brake actuator assembly (skid control ECU) continuously for approximately 3 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the rack and pinion power steering gear assembly is 9 V or higher.	Turn the ignition switch to ON and wait at least approximately 6 seconds.	The EPS warning light illuminates.	-	DTC remains stored only while malfunction is occurring.
U023A	Lost Communication with Front Camera Module	Communication stop occurs between the rack and pinion power steering gear assembly and forward recognition camera continuously for approximately 2 seconds or more.	3 seconds or more elapse after the ignition switch is turned to ON.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	-	-	DTC remains stored only while malfunction is occurring.
U1103	Lost Communication with Stop and Start Control Module	Communication stop occurs between the rack and pinion power steering gear assembly and the engine stop and start ECU continuously for 5 minutes or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the rack and pinion power steering gear assembly is 9 V or higher. The vehicle speed is 20 km/h (12 mph) or more.	Drive the vehicle for approximately 5 minutes or more at a speed of 20 km/h (12 mph) or more.	-	-	DTC remains stored only while malfunction is occurring.

(g) ECM / Techstream Display "Radar Cruise1"

HINT:

This ECU uses the CAN communication system for DTC communication.

Powertrain > Radar Cruise1 > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication With ECM/PCM Missing Message	The ECM does not receive data from brake actuator assembly (skid control ECU) for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 1 second or more. The cruise control main switch is on. The power source voltage of the ECM is 10.5 V or higher.	Turn the cruise control main switch on and wait at least approximately 2 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U010487	Lost Communication with Cruise Control Module Missing Message	The ECM does not receive data from the millimeter wave radar sensor assembly for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 1 second or more. The cruise control main switch is on. The power source voltage of the ECM is 10.5 V or higher.	Turn the cruise control main switch on and wait at least approximately 2 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012287	Lost Communication with Vehicle Dynamics Control Module Missing Message	The ECM does not receive data from brake actuator assembly (skid control ECU) for approximately 3 seconds or more.	All conditions are met: The ignition switch is ON for approximately 1 second or more. The cruise control main switch is on. The power source voltage of the ECM is 10.5 V or higher.	Turn the cruise control main switch on and wait at least approximately 4 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(h) Millimeter Wave Radar Sensor Assembly / Techstream Display "Pre-Collision System"

HINT:

This ECU uses the CAN communication system for DTC communication.
*: Refer to Pre-collision System.
Click here

Body Electrical > Pre-Collision System > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stops between the millimeter wave radar sensor assembly and the ECM for approximately 4 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the ignition switch to ON and wait for at least approximately 6 seconds.	PCS warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stops between the millimeter wave radar sensor assembly and the steering sensor for approximately 2 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the ignition switch to ON and wait for at least approximately 5 seconds.	PCS warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stop occurs between the millimeter wave radar sensor assembly and the brake actuator assembly (skid control ECU) for approximately 2 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the ignition switch to ON and wait for at least approximately 5 seconds.	PCS warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U015587	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	Communication stops between the millimeter wave radar sensor assembly and the combination meter assembly for approximately 9 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the ignition switch to ON and wait for at least approximately 12 seconds.	PCS warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U023A87*	Lost Communication with Image Processing Module "A" Missing Message	Communication stops between the millimeter wave radar sensor assembly and the forward recognition camera for approximately 3 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 6 seconds.	PCS warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U030051*	Internal Control Module Software Incompatibility Not Programmed	The control system information sent from the ECM remains undefined by the millimeter wave radar sensor assembly for approximately 3 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 6 seconds.	PCS warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U030057*	Internal Control Module Software Incompatibility Invalid / Incompatible Software Component	The control system information sent from the ECM does not match that stored in the millimeter wave radar sensor assembly for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the ignition switch to ON and wait for at least approximately 5 seconds.	PCS warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U041881*	Invalid Data Received from Brake System Control Module Invalid Serial Data Received	The millimeter wave radar sensor assembly receives an abnormal brake system control signal for 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the ignition switch to ON and wait for at least approximately 4 seconds.	PCS warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(i) Millimeter Wave Radar Sensor Assembly / Techstream Display "Radar Cruise2" (w/ Dynamic Radar Cruise Control System)

HINT:

This ECU uses the CAN communication system for DTC communication.
*: Refer to Dynamic Radar Cruise Control System.
Click here

Powertrain > Radar Cruise2 > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stop between the millimeter wave radar sensor assembly and the ECM for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 4 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012587	Lost Communication with Multi-axis Acceleration Sensor Module Missing Message	Communication stop between the millimeter wave radar sensor assembly and the airbag ECU assembly for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 4 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stops between the millimeter wave radar sensor assembly and the steering sensor for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 4 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stops between the millimeter wave radar sensor assembly and the brake actuator assembly (skid control ECU) for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 5 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U015587	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	Communication stops between the millimeter wave radar sensor assembly and the combination meter assembly for approximately 5 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 8 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U023A87	Lost Communication with Image Processing Module "A" Missing Message	Communication stops between the millimeter wave radar sensor assembly and the millimeter wave radar sensor assembly for approximately 3 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 6 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U030051*	Internal Control Module Software Incompatibility Not Programmed	The control system information sent from the ECM remains undefined by the millimeter wave radar sensor assembly for approximately 3 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 6 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U030057*	Internal Control Module Software Incompatibility Invalid / Incompatible Software Component	The vehicle information sent from the ECM does not match that stored in the millimeter wave radar sensor assembly for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 4 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U032251*	Software Incompatibility with Body Control Module Not Programmed	The vehicle information sent from the main body ECU (multiplex network body ECU) remains undefined by the millimeter wave radar sensor assembly for approximately 6 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 9 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U032257*	Software Incompatibility with Body Control Module Invalid / Incompatible Software Component	The vehicle information sent from the main body ECU (multiplex network body ECU) does not match that stored in the millimeter wave radar sensor assembly for approximately 4 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 7 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U040181*	Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received	Communication stops between the millimeter wave radar sensor assembly and the ECM for approximately 2 second or more.	All conditions are met: The ignition switch is ON for approximately 17 seconds or more. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 17 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U110687	Lost Communication with Electric Parking Brake Module Missing Message	Communication stops between the millimeter wave radar sensor assembly and the brake actuator assembly (skid control ECU) for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The cruise control main switch is on. The power source voltage of the millimeter wave radar sensor assembly is 10 V or higher.	Turn the cruise control main switch on and wait for at least approximately 5 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(j) Forward Recognition Camera / Techstream Display "Front Recognition Camera"

HINT:

This ECU uses the CAN communication system for DTC communication.
*: Refer to Front Camera System.
Click here

Chassis > Front Recognition Camera > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stops between the forward recognition camera and the ECM for approximately 2 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The vehicle speed is 5 km/h (3 mph) or more.	Drive the vehicle at a speed of 5 km/h (3 mph) or more for approximately 5 seconds or more.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stops between the forward recognition camera and the steering sensor for approximately 1 second or more.	The ignition switch is ON for approximately 3 seconds or more.	Turn the ignition switch to ON and wait for at least approximately 4 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stops between the forward recognition camera and the brake actuator assembly (skid control ECU) for approximately 1 second or more.	The ignition switch is ON for approximately 3 seconds or more.	Turn the ignition switch to ON and wait for at least approximately 4 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stops between the forward recognition camera and the main body ECU (multiplex network body ECU) for approximately 5 seconds or more.	The ignition switch is ON for approximately 3 seconds or more.	Turn the ignition switch to ON and wait for at least approximately 8 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U015587	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	Communication stops between the forward recognition camera and the combination meter assembly for approximately 5 seconds or more.	The ignition switch is ON for approximately 3 seconds or more.	Turn the ignition switch to ON and wait for at least approximately 8 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U030051*	Internal Control Module Software Incompatibility Not Programmed	The control system information sent from the ECM remains undefined by the forward recognition camera for approximately 5 seconds or more.	The ignition switch is ON.	Turn the ignition switch to ON.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U030057*	Internal Control Module Software Incompatibility Invalid / Incompatible Software Component	The control system information sent from the ECM does not match that stored in the forward recognition camera for approximately 5 seconds or more.	The ignition switch is ON.	Turn the ignition switch to ON and wait for at least approximately 5 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U032251*	Software Incompatibility with Body Control Module Not Programmed	The vehicle information sent from the main body ECU (multiplex network body ECU) remains undefined by the forward recognition camera for approximately 5 seconds or more.	The ignition switch is ON.	Turn the ignition switch to ON.	-	-	DTC is stored until it is cleared using the Techstream.
U032257*	Software Incompatibility with Body Control Module Invalid / Incompatible Software Component	The vehicle information sent from the main body ECU (multiplex network body ECU) does not match that stored in the forward recognition camera for approximately 5 seconds or more.	The ignition switch is ON.	Turn the ignition switch to ON.	-	-	DTC is stored until it is cleared using the Techstream.

(k) Forward Recognition Camera / Techstream Display "Road Sign Assist" (w/ Road Sign Assist System)

HINT:

This ECU uses the CAN communication system for DTC communication.

Body Electrical > Road Sign Assist > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stop occurs between the forward recognition camera and the ECM for approximately 2 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The vehicle speed is 5 km/h (3 mph) or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Drive the vehicle at a speed of 5 km/h (3 mph) or more for approximately 5 seconds or more.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stops between the forward recognition camera and the brake actuator assembly (skid control ECU) for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 4 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stops between the forward recognition camera and the main body ECU (multiplex network body ECU) for approximately 5 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 8 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U015587	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	Communication stops between the forward recognition camera and the combination meter assembly for approximately 5 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 8 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(l) Forward Recognition Camera / Techstream Display "Lane Control"

HINT:

This ECU uses the CAN communication system for DTC communication.
*: Refer to Lane Control System.
Click here

Chassis > Lane Control > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stops between the forward recognition camera and the ECM for approximately 2 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The vehicle speed is 5 km/h (3 mph) or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Drive the vehicle at a speed of 5 km/h (3 mph) or more for approximately 5 seconds or more.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stops between the forward recognition camera and the steering sensor for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stops between the forward camera and the brake actuator assembly (skid control ECU) for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U013187	Lost Communication with Power Steering Control Module Missing Message	Communication stops between the forward camera and the rack and pinion power steering ECU assembly for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 4 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U015587	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	Communication stops between the forward recognition camera and the combination meter assembly for approximately 5 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 8 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U023587*	Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message	Communication stops between the forward recognition camera and the millimeter wave radar sensor assembly for approximately 2 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 8 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U030051*	Internal Control Module Software Incompatibility Not Programmed	The control system information sent from the ECM remains undefined by the forward recognition camera for approximately 5 seconds or more.	All conditions are met: The ignition switch is ON. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U030057*	Internal Control Module Software Incompatibility Invalid / Incompatible Software Component	The control system information sent from the ECM does not match that stored in the forward recognition camera for approximately 5 seconds or more.	All conditions are met: The ignition switch is ON. The power source voltage of the forward recognition camera is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(m) Forward Recognition Camera / Techstream Display "Front Recognition Camera (Front Lighting Control)"

HINT:

This ECU uses the CAN communication system for DTC communication.
*: Refer to Automatic High Beam System
Click here

Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stops between the forward recognition camera and the ECM for approximately 2 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The vehicle speed is 5 km/h (3 mph) or more. The power source voltage of the forward recognition camera is 10 V or higher.	Drive the vehicle at a speed of 5 km/h (3 mph) or more for approximately 5 seconds or more.	Automatic high beam indicator light (amber) illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stops between the forward recognition camera and the brake actuator assembly (skid control ECU) for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 4 seconds.	Automatic high beam indicator light (amber) illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stops between the forward recognition camera and the main body ECU (multiplex network body ECU) for approximately 5 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 8 seconds.	Automatic high beam indicator light (amber) illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U023587*	Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message	Communication stops between the forward recognition camera and the millimeter wave radar sensor assembly for approximately 2 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the forward recognition camera is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	Automatic high beam indicator light (amber) illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(n) Millimeter Wave Radar Sensor Assembly / Techstream Display "Front Radar Sensor"

HINT:

This ECU uses the CAN communication system for DTC communication.
*: Refer to Front Radar Sensor System.
Click here

Body Electrical > Front Radar Sensor > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010487*	Lost Communication with Cruise Control Module Missing Message	Communication stops between the forward recognition camera and the forward recognition camera for approximately 1 second or more.	All conditions are met: The ignition switch is ON for approximately 1 second or more. The power source voltage of the millimeter wave radar sensor assembly is 8 V or higher.	Turn the ignition switch to ON and wait for at least approximately 2 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U030557*	Software Incompatibility with Cruise Control Module Invalid / Incompatible Software Component	The control system information sent from the forward recognition camera does not match that stored in the millimeter wave radar sensor assembly for approximately 7 seconds or more.	All conditions are met: The ignition switch is ON for approximately 1 second or more. The power source voltage of the millimeter wave radar sensor assembly is 8 V or higher.	Turn the ignition switch to ON and wait for at least approximately 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(o) Airbag ECU Assembly / Techstream Display "SRS Airbag"

HINT:

DTC communication uses the CAN communication system.

Body Electrical > SRS Airbag > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0154	Lost Communication with Restraints Occupant Classification System Module	Communication stop occurs between the airbag ECU assembly and occupant detection ECU continuously for 5 seconds or more. Checksum error is detected in data received from the occupant detection ECU continuously for 5 seconds or more.	3 seconds or more elapse after the ignition switch is turned to ON.	Turn the ignition switch to ON and wait at least 8 seconds.	The SRS warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.

(p) Occupant Detection ECU / Techstream Display "Occupant Detection"

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Occupant Detection > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0125	Lost Communication With Multi-axis Acceleration Sensor Module	Communication stop occurs between the occupant detection ECU and airbag ECU assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the occupant detection ECU is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	The SRS warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U0129	Lost Communication With Brake System Control Module	Communication stop occurs between the occupant detection ECU and brake actuator assembly (skid control ECU) continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the occupant detection ECU is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	The SRS warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.

(q) Combination Meter Assembly / Techstream Display "Combination Meter"

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Combination Meter > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stop occurs between the combination meter assembly and ECM continuously for approximately 4 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 7 seconds.	The MIL (Malfunction indicator lamp) illuminates.	-	DTC is stored until it is cleared using the Techstream.
U011487	Lost Communication with Four-Wheel Drive Clutch Control Module Missing Message	Communication stop occurs between the combination meter assembly and 4WD ECU assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U012787	Lost Communication with Tire Pressure Monitor Module Missing Message	Communication stop occurs between the combination meter assembly and main body ECU (multiplex network body ECU) continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	The tire pressure warning light blinks, and then illuminates.	-	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stop occurs between the combination meter assembly and brake actuator assembly (skid control ECU) continuously for approximately 4 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 7 seconds.	The ABS warning light illuminates. The VSC OFF indicator light illuminates. The brake warning light (red) illuminates.	-	DTC is stored until it is cleared using the Techstream.
U012987		Communication stop occurs between the combination meter assembly and brake actuator assembly (skid control ECU) continuously for 1 second or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 4 seconds.	The ABS warning light illuminates. The VSC OFF indicator light illuminates. The brake warning light (red) illuminates.	-	DTC is stored until it is cleared using the Techstream.
U013187	Lost Communication with Power Steering Control Module Missing Message	Communication stop occurs between the combination meter assembly and rack and pinion power steering gear assembly continuously for approximately 4 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 7 seconds.	The EPS warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stop occurs between the combination meter assembly and main body ECU (multiplex network body ECU) continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U015187	Lost Communication with Restraints Control Module Missing Message	Communication stop occurs between the combination meter assembly and airbag ECU assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	The SRS warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U016387	Lost Communication with Navigation Control Module Missing Message	Communication stop occurs between the combination meter assembly and the radio and display receiver assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U016487	Lost Communication with HVAC Control Module Missing Message	Communication stop occurs between the combination meter assembly and air conditioning amplifier assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U016887	Lost Communication with Vehicle Security Control Module Missing Message	Communication stop occurs between the combination meter assembly and certification ECU (smart key ECU assembly) continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U023087	Lost Communication with Rear Gate Module Missing Message	Communication stop occurs between the combination meter assembly and multiplex network door ECU continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U023387	Lost Communication with Side Obstacle Detection Control Module "B" Missing Message	Communication stop occurs between the combination meter assembly and blind spot monitor sensor LH continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U023587	Lost Communication with Cruise ControlFront Distance Range Sensor Missing Message	Communication stop occurs between the combination meter assembly and millimeter wave radar sensor assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	The PCS warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U023A87	Lost Communication with Image Processing Module "A" Missing Message	Communication stop occurs between the combination meter assembly and forward recognition camera continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	The lane departure alert indicator light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U110387	Lost Communication with Stop and Start Control Module Missing Message	Communication stop occurs between the combination meter assembly and the engine stop and start ECU continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U110687	Lost Communication with Electric Parking Brake Module Missing Message	Communication stop occurs between the combination meter assembly and brake actuator assembly (skid control ECU) continuously for approximately 4 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 7 seconds.	The brake warning light (red) illuminates.	-	DTC is stored until it is cleared using the Techstream.
U111087	Lost Communication with Intuitive Parking Assist Module Missing Message	Communication stop occurs between the combination meter assembly and clearance warning ECU assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U111287	Lost Communication with Combination Switch Module Missing Message	Communication stop occurs between the combination meter assembly and steering sensor continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 13 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U111787	Lost Communication with Accessory Gateway	Communication stop occurs between the combination meter assembly and bus buffer ECU continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U113387	Lost Communication with PMN Module Missing Message	Communication stop occurs between the combination meter assembly and bus buffer ECU continuously for approximately 4 seconds or more.	All conditions are met: 3 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the combination meter assembly is 10.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 7 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(r) Main Body ECU (Multiplex Network Body ECU) / Techstream Display "Main Body"

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Main Body > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	Communication stop occurs between the main body ECU (multiplex network body ECU) and ECM continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0101	Lost Communication with TCM	Communication stop occurs between the main body ECU (multiplex network body ECU) and ECM continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0120	Lost Communication With Starter / Generator Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and steering sensor continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and brake actuator assembly (skid control ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0151	Lost Communication with Restraints Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and airbag ECU assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and combination meter assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0163	Lost Communication with Navigation Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and the radio and display receiver assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0164	Lost Communication with HVAC Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and air conditioning amplifier assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0182	Lost Communication with AFS	Communication stop occurs between the main body ECU (multiplex network body ECU) and headlight ECU sub-assembly LH continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0208	Lost Communication with "Seat Control Module A"	Communication stop occurs between the main body ECU (multiplex network body ECU) and position control ECU assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0230	Lost Communication with Rear Gate Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and multiplex network door ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U023A	Lost Communication With Image Processing Module "A"	Communication stop occurs between the main body ECU (multiplex network body ECU) and forward recognition camera continuously for 5 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 15 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0327	Software Incompatibility with Vehicle Security Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U1103	Lost Communication with Stop and Start Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and the engine stop and start ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U1104	Lost Communication with Driving Support ECU	The main body ECU (multiplex network body ECU) does not receive data from the forward recognition camera for approximately 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U1106	Lost Communication with Electric Parking Brake Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and brake actuator assembly (skid control ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U1117	Lost Communication with Accessory Gateway	Communication stop occurs between the main body ECU (multiplex network body ECU) and bus buffer ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the main body ECU (multiplex network body ECU) is 10.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(s) Radio and Display Receiver Assembly / Techstream Display "Navigation System" (for Radio and Display Type)

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Navigation System > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stops between the radio and display receiver assembly and the ECM for approximately 10 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 14 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module "A" Missing Message	Communication stops between the radio and display receiver assembly and the brake actuator assembly (skid control ECU) for approximately 10 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. Vehicle speed is 20 km/h (12 mph) or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Drive the vehicle at a speed of 20 km/h (12 mph) or more for 13 seconds or more.	-	-	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stops between the radio and display receiver assembly and the main body ECU (multiplex network body ECU) for approximately 10 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 13 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U015587	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	Communication stops between the radio and display receiver assembly and the combination meter assembly for approximately 30 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 33 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U016487	Lost Communication with HVAC Control Module Missing Message	Communication stops between the radio and display receiver assembly and the air conditioning amplifier assembly for approximately 10 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 13 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U019887	Lost Communication with Telematic Control Module "A" Missing Message	Communication stops between the radio and display receiver assembly and the DCM (telephone transceiver assembly) for approximately 3 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 6 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U023B87	Lost Communication with Image Processing Module "B" Missing Message	Communication stops between the radio and display receiver assembly and the parking assist ECU for approximately 12 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 15 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U026587	Lost Communication with Image Processing Sensor A Missing Message	Communication stops between the radio and display receiver assembly and the rear television camera assembly for approximately 12 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 15 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U100049	CAN Register Fixing Internal Electronic Failure	The radio and display receiver assembly is unable to send or receive data 10 times consecutively.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 61 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U111087	Lost Communication with Clearance Sonar Module Missing Message	Communication stops between the radio and display receiver assembly and the clearance warning ECU assembly for approximately 10 seconds or more.	All conditions are met: The ignition switch is ON for approximately 3 seconds or more. The power source voltage of the radio and display receiver assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait for at least approximately 13 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(t) DCM (Telephone Transceiver Assembly) / Techstream Display "Telematics" (w/ Telematics System)

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Telematics > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U014087	Lost Communication with Body Control Module Missing Message	Communication stop occurs between the DCM (telephone transceiver assembly) and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the DCM (telephone transceiver assembly) is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC remains stored only while malfunction is occurring.
U015587	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	Communication stop occurs between the DCM (telephone transceiver assembly) and combination meter assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the DCM (telephone transceiver assembly) is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC remains stored only while malfunction is occurring.
U016387	Lost Communication with Navigation Control Module Missing Message	Communication stop occurs between the DCM (telephone transceiver assembly) and the radio and display receiver assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the DCM (telephone transceiver assembly) is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC remains stored only while malfunction is occurring.

(u) Air Conditioning Amplifier Assembly / Techstream Display "Air Conditioner"

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Air Conditioner > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	Communication stop occurs between the air conditioning amplifier assembly and ECM continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the air conditioning amplifier assembly is 10 V or higher. The vehicle speed is 30 km/h (19 mph) or more.	Drive the vehicle for 20 seconds or more at a speed of 30 km/h (19 mph) or more.	-	-	DTC is stored until it is cleared using the Techstream.
U0131	Lost Communication With Power Steering Control Module	Communication stop occurs between the air conditioning amplifier assembly and the rack and pinion power steering gear assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the air conditioning amplifier assembly is 10 V or higher. The vehicle speed is 30 km/h (19 mph) or more.	Drive the vehicle for 20 seconds or more at a speed of 30 km/h (19 mph) or more.	-	-	DTC is stored until it is cleared using the Techstream.
U0142	Lost Communication With Body Control Module "B"	Communication stop occurs between the air conditioning amplifier assembly and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the air conditioning amplifier assembly is 10 V or higher. The vehicle speed is 30 km/h (19 mph) or more.	Drive the vehicle for 20 seconds or more at a speed of 30 km/h (19 mph) or more.	-	-	DTC is stored until it is cleared using the Techstream.
U0151	Lost Communication with Restraints Control Module	Communication stop occurs between the air conditioning amplifier assembly and airbag ECU assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the air conditioning amplifier assembly is 10 V or higher. The vehicle speed is 30 km/h (19 mph) or more.	Drive the vehicle for 20 seconds or more at a speed of 30 km/h (19 mph) or more.	-	-	DTC is stored until it is cleared using the Techstream.
U0155	Lost Communication With Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the air conditioning amplifier assembly and combination meter assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the air conditioning amplifier assembly is 10 V or higher. The vehicle speed is 30 km/h (19 mph) or more.	Drive the vehicle for 20 seconds or more at a speed of 30 km/h (19 mph) or more.	-	-	DTC is stored until it is cleared using the Techstream.

(v) Clearance Warning ECU Assembly / Techstream Display "Clearance Warning" (w/ Intuitive Parking Assist System with Parking Support Brake System)

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Clearance Warning > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
*: Refer to Parking Support Brake System Click here
U010087	Lost Communication with ECM/PCM "A"	Communication stop occurs between the clearance warning ECU assembly and ECM continuously for approximately 6 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 9 seconds.	The PKSB OFF indicator light blinks.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012587	Lost Communication With Multi-axis Acceleration Sensor Module Missing Message	Communication stop occurs between the clearance warning ECU assembly and airbag ECU assembly continuously for approximately 1 second or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 4 seconds.	The PKSB OFF indicator light blinks.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication With Steering Angle Sensor Module	Communication stop occurs between the clearance warning ECU assembly and steering sensor continuously for approximately 6 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 9 seconds.	The PKSB OFF indicator light blinks.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module	Communication stop occurs between the clearance warning ECU assembly and brake actuator assembly (skid control ECU) continuously for approximately 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 8 seconds.	The PKSB OFF indicator light blinks.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module	Communication stop occurs between the clearance warning ECU assembly and main body ECU (multiplex network body ECU) continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U015587	Lost Communication With Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the clearance warning ECU assembly and combination meter assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U016487	Lost Communication with HVAC Control Module	Communication stop occurs between the clearance warning ECU assembly and air conditioning amplifier assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U110387	Lost Communication with Stop and Start Control Module	Communication stop occurs between the clearance warning ECU assembly and the engine stop and start ECU continuously for approximately 1 second or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 4 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U117787*	Lost Communication with Side Obstacle Detection Control Module "A" (ch2) Missing Message	Communication stop occurs between the clearance warning ECU assembly and blind spot monitor sensor RH continuously for 12 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 15 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U117887*	Lost Communication with Side Obstacle Detection Control Module "B" (ch2) Missing Message	Communication stop occurs between the clearance warning ECU assembly and blind spot monitor sensor LH continuously for 12 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least 15 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(w) Clearance Warning ECU Assembly / Techstream Display "Intuitive P/A" (w/ Intuitive Parking Assist System without Parking Support Brake System)

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Intuitive P/A > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0100	Lost Communication with ECM/PCM "A"	Either of the following conditions is met: Communication stop occurs between the clearance warning ECU assembly and ECM continuously for approximately 6 seconds or more. Communication stop occurs between the clearance warning ECU assembly and ECM continuously for approximately 1 second or more. Communication stop occurs between the clearance warning ECU assembly and ECM continuously for approximately 2 seconds or more. Communication stop occurs between the clearance warning ECU assembly and ECM continuously for approximately 4 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the ignition switch to ON and wait at least approximately 9 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0101	Lost Communication with TCM	Communication stop occurs between the clearance warning ECU assembly and ECM continuously for 5 seconds or more.	All conditions are met: 5 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 10.2 V or higher.	Turn the ignition switch to ON and wait at least 10 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the clearance warning ECU assembly and main body ECU (multiplex network body ECU) continuously for 4 seconds or more.	All conditions are met: 5 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 10.2 V or higher.	Turn the ignition switch to ON and wait at least 9 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0155	Lost Communication With Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the clearance warning ECU assembly and combination meter assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the clearance warning ECU assembly is 10.2 V or higher.	Turn the ignition switch to ON and wait at least 8 seconds.	-	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(x) Blind Spot Monitor Sensor LH / Techstream Display "Blind Spot Monitor Master" (w/ Blind Spot Monitor System)

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Blind Spot Monitor Master > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
*: Refer to Blind Spot Monitor System Click here
U0100	Lost Communication with ECM/PCM "A"	Communication stop occurs between the blind spot monitor sensor LH and ECM continuously for approximately 11 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 12 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0125	Lost Communication with Yaw Rate Sensor Module	Communication stop occurs between the blind spot monitor sensor LH and airbag ECU assembly continuously for approximately 4 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the blind spot monitor sensor LH and steering sensor continuously for approximately 4 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the blind spot monitor sensor LH and brake actuator assembly (skid control ECU) continuously for approximately 4 seconds or more.	All conditions are met: 2 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 6 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the blind spot monitor sensor LH and main body ECU (multiplex network body ECU) continuously for approximately 11 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 12 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0232*	Lost Communication with Blind Spot Monitor Slave Module	Communication stop occurs between the blind spot monitor sensor LH and blind spot monitor sensor RH continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the ignition switch to ON and wait at least 12 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(y) Blind Spot Monitor Sensor RH / Techstream Display "Blind Spot Monitor Slave" (w/ Blind Spot Monitor System)

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Blind Spot Monitor Slave > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
*: Refer to Blind Spot Monitor System Click here
U0100*	Lost Communication with ECM/PCM "A"	Communication stop occurs between the blind spot monitor sensor RH and ECM continuously for approximately 11 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor RH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 12 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0125*	Lost Communication with Yaw Rate Sensor Module	Communication stop occurs between the blind spot monitor sensor RH and airbag ECU assembly continuously for approximately 4 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor RH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0126*	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the blind spot monitor sensor RH and steering sensor continuously for approximately 4 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor RH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 5 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0129*	Lost Communication with Brake System Control Module	Communication stop occurs between the blind spot monitor sensor RH and brake actuator assembly (skid control ECU) continuously for approximately 4 seconds or more.	All conditions are met: 2 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor RH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 6 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0142*	Lost Communication with Body Control Module "B"	Communication stop occurs between the blind spot monitor sensor RH and main body ECU (multiplex network body ECU) continuously for approximately 11 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor RH is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 12 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U0233*	Lost Communication with Blind Spot Monitor Master Module	Communication stop occurs between the blind spot monitor sensor RH and blind spot monitor sensor LH continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the blind spot monitor sensor RH is 10 V or higher.	Turn the ignition switch to ON and wait at least 12 seconds.	The BSM indicator light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(z) Certification ECU (Smart Key ECU Assembly) / Techstream Display "Smart Key" (w/ Smart Key System)

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Smart Key > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	Communication stop occurs between the certification ECU (smart key ECU assembly) and ECM continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the certification ECU (smart key ECU assembly) and combination meter assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0230	Lost Communication with Rear Gate Module	Communication stop occurs between the certification ECU (smart key ECU assembly) and multiplex network door ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U1103	Lost Communication with Stop and Start Control Module	Communication stop occurs between the certification ECU (smart key ECU assembly) and the engine stop and start ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U1117	Lost Communication with Accessory Gateway	Communication stop occurs between the certification ECU (smart key ECU assembly) and bus buffer ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 20 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(aa) Certification ECU (Smart Key ECU Assembly) / Techstream Display "Power Source Control" (w/ Smart Key System)

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Power Source Control > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	Communication stop occurs between the certification ECU (smart key ECU assembly) and ECM continuously for 3 seconds or more.	All conditions are met: A power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 3 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0140	Lost Communication with Body Control Module "B"	Communication stop occurs between the certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) continuously for 3 seconds or more.	All conditions are met: A power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 3 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the certification ECU (smart key ECU assembly) and combination meter assembly continuously for 3 seconds or more.	All conditions are met: A power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 3 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U1103	Lost Communication with Stop and Start Control Module	Communication stop occurs between the certification ECU (smart key ECU assembly) and the engine stop and start ECU continuously for 5 seconds or more.	All conditions are met: A power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 5 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U1117	Lost Communication with Accessory Gateway	Communication stop occurs between the certification ECU (smart key ECU assembly) and bus buffer ECU continuously for 5 seconds or more.	All conditions are met: A power source mode change is detected (+B changes from off to on, ACC changes between on and off, or IG changes between on and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the ignition switch to ON and wait at least 5 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(ab) Multiplex Network Door ECU / Techstream Display "Back Door" (w/ Power Back Door System)

HINT:

DTC communication uses the CAN communication system.

Body Electrical > Back Door > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0101	Lost Communication with TCM	Communication stop occurs between the multiplex network door ECU and ECM continuously for 10 seconds or more.	The power source voltage of the multiplex network door ECU is 10.8 V or higher.	Wait at least 10 seconds with the power source voltage of the multiplex network door ECU at 10.8 V or higher.	-	-	DTC remains stored only while malfunction is occurring.
U0122	Lost Communication with Vehicle Dynamics Control Module	Communication stop occurs between the multiplex network door ECU and brake actuator assembly (skid control ECU) continuously for 10 seconds or more.	The power source voltage of the multiplex network door ECU is 10.8 V or higher.	Wait at least 10 seconds with the power source voltage of the multiplex network door ECU at 10.8 V or higher.	-	-	DTC remains stored only while malfunction is occurring.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the multiplex network door ECU and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	The power source voltage of the multiplex network door ECU is 10.8 V or higher.	Wait at least 10 seconds with the power source voltage of the multiplex network door ECU at 10.8 V or higher.	-	-	DTC remains stored only while malfunction is occurring.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the multiplex network door ECU and combination meter assembly continuously for 10 seconds or more.	All conditions are met: The ignition switch is ACC. The power source voltage of the multiplex network door ECU is 10.8 V or higher.	Turn the ignition switch to ACC and wait at least 10 seconds with the power source voltage of the multiplex network door ECU at 10.8 V or higher.	-	-	DTC remains stored only while malfunction is occurring.
U1117	Lost Communication with Accessory Gateway	Communication stop occurs between the multiplex network door ECU and bus buffer ECU continuously for 10 seconds or more.	The power source voltage of the multiplex network door ECU is 10.8 V or higher.	Wait at least 10 seconds with the power source voltage of the multiplex network door ECU at 10.8 V or higher.	-	-	DTC remains stored only while malfunction is occurring.

(ac) Television Camera Assembly / Techstream Display "Rear Camera" (w/ Parking Assist Monitor System)

HINT:

DTC communication uses the CAN communication system.

Chassis > Rear Camera > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stops between the television camera assembly and the ECM for approximately 4 seconds or more.	The ignition switch is ACC for approximately 3 seconds or more.	Turn the ignition switch to ACC and wait for at least approximately 7 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stops between the television camera assembly and the steering sensor for approximately 2 seconds or more.	The ignition switch is ACC for approximately 3 seconds or more.	Turn the ignition switch to ACC and wait for at least approximately 6 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module "A" Missing Message	Communication stops between the television camera assembly and the brake actuator assembly (No. 2 skid control ECU) for approximately 11 seconds or more.	The ignition switch is ON for approximately 3 seconds or more.	Turn the ignition switch to ON and wait for at least approximately 14 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stops between the television camera assembly and the main body ECU (multiplex network body ECU) for approximately 4 seconds or more.	The ignition switch is ACC for approximately 3 seconds or more.	Turn the ignition switch to ACC and wait for at least approximately 7 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U016387	Lost Communication with Navigation Control Module Missing Message	Communication stops between the television camera assembly and the radio and display receiver assembly for approximately 11 seconds or more.	The ignition switch is ACC for approximately 3 seconds or more.	Turn the ignition switch to ON and wait for at least approximately 14 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U114F87	Lost Communication with Power Integration Module Missing Message	Communication stops between the rear television camera assembly and the main body ECU (multiplex network body ECU) for approximately 11 seconds or more.	The ignition switch is ON for approximately 3 seconds or more.	Turn the ignition switch to ON and wait for at least approximately 14 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(ad) Parking Assist ECU / Techstream Display "Circumference Monitoring Camera Control Module" (w/ Panoramic View Monitor System)

HINT:

DTC communication uses the CAN communication system.

Chassis > Circumference Monitoring Camera Control Module > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stops between the parking assist ECU and the ECM for approximately 4 seconds or more.	All conditions are met: The ignition switch is ACC for approximately 3 seconds or more. The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the ignition switch to ACC and wait for at least approximately 7 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stops between the parking assist ECU and the steering sensor for approximately 2 seconds or more.	All conditions are met: The ignition switch is ACC for approximately 3 seconds or more. The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the ignition switch to ACC and wait for at least approximately 5 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module "A" Missing Message	Communication stops between the parking assist ECU and the brake actuator assembly (No. 2 skid control ECU) for approximately 2 seconds or more.	All conditions are met: The ignition switch is ACC for approximately 3 seconds or more. The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the ignition switch to ACC and wait for at least approximately 5 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stops between the parking assist ECU and the main body ECU (multiplex network body ECU) for approximately 4 seconds or more.	All conditions are met: The ignition switch is ACC for approximately 3 seconds or more. The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the ignition switch to ACC and wait for at least approximately 7 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U016387	Lost Communication with Navigation Control Module Missing Message	Communication stops between the parking assist ECU and the radio and display receiver assembly for approximately 11 seconds or more.	All conditions are met: The ignition switch is ACC for approximately 3 seconds or more. The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the ignition switch to ACC and wait for at least approximately 14 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U111087	Lost Communication with Clearance Sonar Module Missing Message	Communication stops between the parking assist ECU and the clearance warning ECU assembly for approximately 11 seconds or more.	All conditions are met: The ignition switch is ACC for approximately 3 seconds or more. The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the ignition switch to ACC and wait for at least approximately 14 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(ae) Tire Pressure Warning ECU and Receiver / Techstream Display "Tire Pressure Monitor" (w/ Tire Pressure System [Tire Inflation Pressure Display Function])

HINT:

DTC communication uses the CAN communication system.

Chassis > Tire Pressure Monitor > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the tire pressure warning ECU and receiver and the brake actuator assembly (skid control ECU) continuously for 60 seconds or more.	5 seconds or more elapse after the ignition switch is turned to ON.	Turn the ignition switch to ON and wait at least 65 seconds.	-	-	DTC remains stored only while malfunction is occurring.

(af) 4WD ECU Assembly / Techstream Display "Four Wheel Drive" (for AWD with Dynamic Torque Control AWD System)

NOTICE:

The different types of 4WD ECU assemblys are shown in the Dynamic Torque Control AWD System.

Click here

(1) for Type A:

HINT:

DTC communication uses the CAN communication system.

Chassis > Four Wheel Drive > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U0073	Control Module Communication Bus OFF	The response sent to the brake actuator assembly (skid control ECU) or ECM is continuously invalid for 5 seconds.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least 6 seconds.	The 4WD warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U0100	Lost Communication with ECM / PCM "A"	Either of the following conditions is met: Communication stop occurs between the 4WD ECU assembly and transmission control ECU continuously for 2 seconds or more. Communication stop occurs between the 4WD ECU assembly and ECM continuously for 2 seconds or more. Communication stop occurs between the 4WD ECU assembly and ECM continuously for approximately 4 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher. The vehicle speed is 60 km/h (37 mph) or more.	Drive the vehicle for 5 seconds or more at a speed of 60 km/h (37 mph) or more.	The 4WD warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U0123	Lost Communication With Yaw Rate Sensor Module	Communication stop occurs between the 4WD ECU assembly and airbag ECU assembly continuously for 1 second or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher. The vehicle speed is 60 km/h (37 mph) or more.	Drive the vehicle for 2 seconds or more at a speed of 60 km/h (37 mph) or more.	-	-	-
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the 4WD ECU assembly and steering sensor continuously for 1 second or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least 2 seconds.	The 4WD warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U0129	Lost Communication with Brake System Control Module	Either of the following conditions is met: Communication stop occurs between the 4WD ECU assembly and brake actuator assembly (skid control ECU) continuously for 3 seconds or more. Communication stop occurs between the 4WD ECU assembly and brake actuator assembly (skid control ECU) continuously for 8 seconds or more.	All conditions are met: 2 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least 10 seconds.	The 4WD warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.

(2) for Type B:

HINT:

DTC communication uses the CAN communication system.

Chassis > Four Wheel Drive > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Communication stop occurs between the 4WD ECU assembly and transmission control ECU continuously for 3 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least 6 seconds.	The 4WD warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Either of the following conditions is met: Communication stop occurs between the 4WD ECU assembly and steering sensor continuously for 2 seconds or more. Condition occurs 10 times or more within 60 seconds: The 4WD ECU assembly does not receive data from the steering sensor once or more within 5 seconds.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least 65 seconds.	The 4WD warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Communication stop occurs between the 4WD ECU assembly and brake actuator assembly (skid control ECU) continuously for 4 seconds or more.	All conditions are met: 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least 7 seconds.	The 4WD warning light illuminates.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the Techstream.

(ag) 4WD ECU Assembly / Techstream Display "Four Wheel Drive" (for AWD with Dynamic Torque Vectoring AWD System)

HINT:

DTC communication uses the CAN communication system.

Chassis > Four Wheel Drive > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	Either of the following conditions is met: Communication stop occurs between the 4WD ECU assembly and transmission control ECU continuously for 2 seconds or more. Communication stop occurs between the 4WD ECU assembly and ECM continuously for 2 seconds or more. Communication stop occurs between the 4WD ECU assembly and ECM continuously for approximately 4 seconds or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher. The vehicle speed is 60 km/h (37 mph) or more.	Drive the vehicle for 5 seconds or more at a speed of 60 km/h (37 mph) or more.	The 4WD warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U012587	Lost Communication with Multi-axis Acceleration Sensor Module Missing Message	Communication stop occurs between the 4WD ECU assembly and airbag ECU assembly continuously for 1 second or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher. The vehicle speed is 60 km/h (37 mph) or more.	Drive the vehicle for 2 seconds or more at a speed of 60 km/h (37 mph) or more.	-	-	DTC is stored until it is cleared using the Techstream.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	Communication stop occurs between the 4WD ECU assembly and steering sensor continuously for 1 second or more.	All conditions are met: 1 second or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least 2 seconds.	The 4WD warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.
U012987	Lost Communication with Brake System Control Module Missing Message	Either of the following conditions is met: Communication stop occurs between the 4WD ECU assembly and brake actuator assembly (skid control ECU) continuously for 3 seconds or more. Communication stop occurs between the 4WD ECU assembly and brake actuator assembly (skid control ECU) continuously for 8 seconds or more.	All conditions are met: 2 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the 4WD ECU assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least 10 seconds.	The 4WD warning light illuminates.	-	DTC is stored until it is cleared using the Techstream.

(ah) Inner Rear View Mirror Assembly / Techstream Display "Digital Rear-View Mirror" (w/ Garage Door Opener System [for Digital Inner Mirror Type])

HINT:

DTC communication uses the CAN communication system.

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed		DTC Storage Method
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Indication in Meter	Multi-information Display	DTC Storage Method
U010187	Lost Communication with TCM Missing Message	Communication stop occurs between the inner rear view mirror assembly and ECM continuously for approximately 10 seconds or more.	All conditions are met: Approximately 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the inner rear view mirror assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 13 seconds.	-	-	DTC is stored until it is cleared using the Techstream.
U014087	Lost Communication with Body Control Module Missing Message	Communication stop occurs between the inner rear view mirror assembly and main body ECU (multiplex network body ECU) continuously for approximately 10 seconds or more.	All conditions are met: Approximately 3 seconds or more elapse after the ignition switch is turned to ON. The power source voltage of the inner rear view mirror assembly is 10 V or higher.	Turn the ignition switch to ON and wait at least approximately 13 seconds.	-	-	DTC is stored until it is cleared using the Techstream.

(ai) Bus Buffer ECU / Techstream Display "-" (w/ Bus Buffer ECU)

HINT:

The bus buffer ECU is connected to the CAN communication system, but the bus buffer ECU does not store or output CAN communication DTCs.

(aj) Position Control ECU Assembly / Techstream Display "Driver Seat" (w/ Memory)

HINT:

The position control ECU assembly is connected to the CAN communication system, but the position control ECU assembly does not store or output CAN communication DTCs.

(ak) Steering Sensor / Techstream Display "Steering Angle Sensor"

HINT:

The steering sensor is connected to the CAN communication system, but the steering sensor does not store or output CAN communication DTCs.

(al) Television Camera Assembly / Techstream Display "-" (w/ Panoramic View Monitor System)

HINT:

The television camera assembly is connected to the CAN communication system, but the television camera assembly does not store or output CAN communication DTCs.

(am) Central Gateway ECU (Network Gateway ECU) / Techstream Display "Central Gateway"

HINT:

The central gateway ECU (network gateway ECU) is connected to the CAN communication system, but the central gateway ECU (network gateway ECU) does not store or output CAN communication DTCs.

CAN BUS WAVEFORMS

HINT:

This waveform is measured between terminals CANH and GND, and terminals CANL and GND of the central gateway ECU (network gateway ECU). (Use this as a reference for diagnosis of CAN communication lines.)
When malfunctions in multiple ECUs are suspected based on the CAN bus check and DTCs checked using the Techstream, check the resistance of the CAN bus using an ohmmeter first. If no problems are found, check the following waveforms.
Click here
If a waveform is not similar to one of the following 3 patterns (Group 1), then an open in a CAN main bus line, an open in a CAN branch line, or a short between a CAN line (CANH or CANL) and ground is suspected (Group 2).
Wiggle the connector and wire harness to check if the waveform changes.

(a) CAN bus waveforms (Group 1)

(1) Normal waveform

(2) Open in both of the lines (CANH and CANL) of a CAN branch

HINT:

Waveforms (waveforms shown using dotted lines) are not output from an ECU or sensor connected to a CAN branch with an open circuit in both lines. (Waveforms from other ECUs or sensors are normal.)
Because this waveform is similar to a normal waveform, instead of using the waveform, the malfunctioning part can be narrowed down by performing a CAN bus check.

(3) Short between the CAN bus lines (CANH and CANL)

HINT:

Waveforms disappear.
If the malfunction is in an ECU, disconnecting the ECU will change the waveform. If the waveform does not change, a malfunction in the wire harness is suspected.

(b) CAN bus waveforms (reference) (Group 2)

NOTICE:

The following CAN bus waveforms can be used only as reference. the actual measured waveform may differ significantly depending on the location of the open or short circuit.

(1) Open in a CAN branch line (CANH)

HINT:

An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.
Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. the waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected.

(2) Open in a CAN branch line (CANL)

HINT:

An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.
Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. the waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected.

(3) Open in a CAN main bus line (CANH)

HINT:

Waveforms of ECUs or sensors that are closer to the central gateway ECU (network gateway ECU) than the open part are almost normal.
Waveforms of ECUs or sensors that are on the opposite side of the central gateway ECU (network gateway ECU) from the open part are abnormal.
An open in a CAN main bus line can be confirmed by measuring the resistance between the CANH and CANL terminals of any CAN branch.

(4) Short between a CAN bus line (CANH) and ground

HINT:

Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors.
A short to ground in the CANH line can be confirmed by measuring the resistance between CANH and ground using an ohmmeter.

(5) Short between a CAN bus line (CANL) and ground

HINT:

Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors.
A short to ground in the CANL line can be confirmed by measuring the resistance between CANL and ground using an ohmmeter.

DATA SENDING/RECEIVING TABLE

(a) Data sending/receiving table

HINT:

If Data List items related to sent/received data are not displayed properly, the part for which communication is interrupted can be determined using the table below.

Data Detected and Sent by	Can be Checked in Data List	Relevant Data List Item		Relevant Data List Item
Data Detected and Sent by	Can be Checked in Data List	Can be Checked in Data List	Cannot be Checked in Data List	Selected System*3	Data List Item
Engine speed	ECM	Combination meter assembly Rack and pinion power steering gear assembly 4WD ECU assembly Brake actuator assembly (skid control ECU) Engine stop and start ECU	Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) Certification ECU (smart key ECU assembly) Airbag ECU assembly Clearance warning ECU assembly Radio and display receiver assembly DCM (telephone transceiver assembly) Bus buffer ECU	Engine	Engine Speed
				Combination Meter	Engine RPM
				EMPS	Engine Revolutions
				Four Wheel Drive	Engine Speed
				Brake/EPB*	Engine Revolutions
				Stop and Start	Engine Speed (ECM) Engine Speed
Engine coolant temperature	ECM	Air conditioning amplifier assembly Combination meter assembly 4WD ECU assembly Engine stop and start ECU	Certification ECU (smart key ECU assembly) Radio and display receiver assembly	Engine	Coolant Temperature
				Air Conditioner	Engine Coolant Temp
				Combination Meter	Coolant Temperature
				Four Wheel Drive	Coolant Temperature
				Stop and Start	Coolant Temperature
Shift position	ECM	Certification ECU (smart key ECU assembly) Brake actuator assembly (skid control ECU) Blind spot monitor sensor LH Clearance warning ECU assembly Radio and display receiver assembly Engine stop and start ECU	Main body ECU (multiplex network body ECU) Multiplex network door ECU Combination meter assembly*1 Airbag ECU assembly Television camera assembly Forward recognition camera DCM (telephone transceiver assembly) Bus buffer ECU Tire pressure warning ECU and receiver Inner rear view mirror assembly Parking assist ECU	Engine	Shift SW Status (P Range) Shift SW Status (R Range) Shift SW Status (N Range) Shift SW Status (N,P Range) Shift SW Status (S Range) Shift SW Status (D Range)
				Power Source Control	Shift P Signal
				Brake/EPB*	Reverse Position Switch
				Blind Spot Monitor Master	Reverse (Only for AT/CVT)
				Clearance Sonar	Parking Signal Reverse Signal
				Clearance Warning	Parking Signal Reverse Signal
				Navigation System	Reverse Signal
				Stop and Start	Shift Position
	Main body ECU (multiplex network body ECU)	Position control ECU assembly	-	Driver Seat	Shift SW Position
Stop light switch signal	ECM	Engine stop and start ECU	Main body ECU (multiplex network body ECU) Airbag ECU assembly Radio and display receiver assembly DCM (telephone transceiver assembly)	Engine	Stop Light SW
Stop light switch signal	ECM	Engine stop and start ECU		Stop and Start	Stop Light SW (ECM) Stop Light SW (ABS/VSC)
Wheel speed	Brake actuator assembly (skid control ECU)	Rack and pinion power steering gear assembly 4WD ECU assembly	Airbag ECU assembly Blind spot monitor sensor LH Clearance warning ECU assembly Forward recognition camera Engine stop and start ECU ECM	Brake/EPB*	FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed
				EMPS	Wheel Speed Right Wheel Speed Left
				Four Wheel Drive	FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed
Vehicle speed	Combination meter assembly*2	Position control ECU assembly Tire pressure warning ECU and receiver	Air conditioning amplifier assembly Clearance warning ECU assembly Main body ECU (multiplex network body ECU) Multiplex network door ECU Certification ECU (smart key ECU assembly) DCM (telephone transceiver assembly) Bus buffer ECU	Combination Meter	Vehicle Speed Meter
				Driver Seat	Vehicle Speed
				Tire Pressure Monitor	Vehicle Speed
	Brake actuator assembly (skid control ECU)	Combination meter assembly Rack and pinion power steering gear assembly Occupant detection ECU Forward recognition camera Radio and display receiver assembly Parking assist ECU Television camera assembly	Main body ECU (multiplex network body ECU) Airbag ECU assembly DCM (telephone transceiver assembly)	Brake/EPB*	Vehicle Speed
				Combination Meter	Vehicle Speed Meter
				EMPS	Meter Vehicle Velocity
				Occupant Detection	VSC Vehicle Speed
				Circumference Monitoring Camera Control Module	Vehicle Speed
				Rear Camera	Vehicle Speed
				Radar Cruise2	Vehicle Speed
				Navigation System	Vehicle Speed
Ambient temperature	Air conditioning amplifier assembly	Combination meter assembly 4WD ECU assembly Brake actuator assembly (skid control ECU) Engine stop and start ECU ECM	Main body ECU (multiplex network body ECU) Bus buffer ECU Rack and pinion power steering gear assembly Clearance warning ECU assembly Forward recognition camera Radio and display receiver assembly DCM (telephone transceiver assembly)	Air Conditioner	Ambient Temp Sensor
				Combination Meter	Ambient Temperature (Celsius) Ambient Temperature (Fahrenheit)
				Four Wheel Drive	Ambient Temperature
				Brake/EPB*	Ambient Temperature
				Stop and Start	Ambient Temperature
				Engine	Ambient Temperature
Steering angle signal	Steering sensor	Rack and pinion power steering gear assembly Brake actuator assembly (skid control ECU) Blind spot monitor sensor LH Millimeter wave radar sensor assembly Parking assist ECU	Main body ECU (multiplex network body ECU) Combination meter assembly Airbag ECU assembly 4WD ECU assembly Clearance warning ECU assembly Radio and display receiver assembly	EMPS	Steering Angle
				Brake/EPB*	Steering Angle Value
				Blind Spot Monitor Master	Steering Angle
				Circumference Monitoring Camera Control Module	Steering Angle
				Radar Cruise2	Steering Angle Signal
Door courtesy	Main body ECU (multiplex network body ECU)	-	Air conditioning amplifier assembly Certification ECU (smart key ECU assembly) Combination meter assembly Brake actuator assembly (skid control ECU) Parking assist ECU Radio and display receiver assembly DCM (telephone transceiver assembly) Bus buffer ECU	Main Body	FR Door Courtesy SW FL Door Courtesy SW RR Door Courtesy SW RL Door Courtesy SW
Luggage courtesy	Main body ECU (multiplex network body ECU)	-	Bus buffer ECU Certification ECU (smart key ECU assembly) Combination meter assembly Television camera assembly Parking assist ECU Radio and display receiver assembly DCM (telephone transceiver assembly)	Main Body	Back Door Courtesy SW
Luggage courtesy	Multiplex network door ECU	-	Main body ECU (multiplex network body ECU)	Back Door	Courtesy SW

*1: Although the received contents cannot be checked in the Data List, whether or not the data is received normally can be checked by observing the combination meter assembly.
*2: The combination meter assembly receives a vehicle speed signal from the brake actuator assembly (skid control ECU) and sends the signal to other ECUs.
*3: According to the display on the Techstream, read the Data List.
- Enter the following menus: Powertrain / Engine / Data List
  Click here
- Enter the following menus: Body Electrical / Combination Meter / Data List
  Click here
- Enter the following menus: Chassis / EMPS / Data List
  for Type A: Click here
  
  for Type B: Click here
- Enter the following menus: Chassis / Four Wheel Drive / Data List
  w/ Dynamic Torque Control AWD System (for Type A): Click here
  
  w/ Dynamic Torque Control AWD System (for Type B): Click here
  
  w/ Dynamic Torque Vectoring AWD System: Click here
- Enter the following menus: Chassis / Brake/EPB* / Data List
  Click here
  
  EPB*: Electric Parking Brake
- Enter the following menus: Powertrain / Stop and Start / Data List
  Click here
- Enter the following menus: Body Electrical / Air Conditioner / Data List
  Click here
- Enter the following menus: Body Electrical / Power Source Control / Data List
  Click here
- Enter the following menus: Body Electrical / Blind Spot Monitor Master / Data List
  Click here
- Enter the following menus: Body Electrical / Intuitive P/A / Data List
  Click here
- Enter the following menus: Body Electrical / Clearance Warning / Data List
  Click here
- Enter the following menus: Chassis / Circumference Monitoring Camera Control Module / Data List
  Click here
- Enter the following menus: Body Electrical / Navigation System / Data List
  Click here
- Enter the following menus: Body Electrical / Driver Seat / Data List
  Click here
- Enter the following menus: Chassis / Tire Pressure Monitor / Data List
  Click here
- Enter the following menus: Body Electrical / Occupant Detection / Data List
  Click here
- Enter the following menus: Powertrain / Radar Cruise2 / Data List
  Click here
- Enter the following menus: Body Electrical / Main Body / Data List
  Click here
- Enter the following menus: Body Electrical / Back Door / Data List
  Click here
- Enter the following menus: Powertrain / Radar Cruise2 / Data List
  Click here