| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM10000000214RI |
| Model Year Start: 2022 | Model: RAV4 | Prod Date Range: [12/2021 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): U011000,...,U149257; Lost Communication with Drive Motor Control Module "A"; 2022 - 2025 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
DTC |
U011000 |
Lost Communication with Drive Motor Control Module "A" |
|
DTC |
U012987 |
Lost Communication with Brake System Control Module "A" Missing Message |
|
DTC |
U029300 |
Lost Communication with Hybrid/EV Powertrain Control Module |
|
DTC |
U110600 |
Lost Communication with Electric Parking Brake Module |
|
DTC |
U115000 |
Lost Communication with Hybrid Powertrain Control Module (ch2) |
|
DTC |
U117D87 |
Lost Communication with Brake System Control Module (ch4) Missing Message |
|
DTC |
U149257 |
Software incompatibility with Hybrid/EV Powertrain Control Module Invalid/Incompatible Software Component |
DESCRIPTION
The No. 1 skid control ECU (brake booster with master cylinder assembly) receives signals from the hybrid vehicle control ECU, inverter with converter assembly and No. 2 skid control ECU (brake actuator assembly) via CAN communication.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Note |
|---|---|---|---|---|---|
|
U011000 |
Lost Communication with Drive Motor Control Module "A" |
When terminal IG1 voltage is 9.5 V or more data from the inverter with converter assembly cannot be received for 2 seconds or more. |
|
Comes on |
|
|
U012987 |
Lost Communication with Brake System Control Module "A" Missing Message |
When the voltage at terminal IG1 is 9.5 V or more, communication between the No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly) is not possible for 2 seconds or more. |
|
Comes on |
|
|
U029300 |
Lost Communication with Hybrid/EV Powertrain Control Module |
When terminal IG2 voltage is 9.5 V or more, data from the hybrid vehicle control ECU cannot be received for 2 seconds or more. |
|
Comes on |
|
|
U110600 |
Lost Communication with Electric Parking Brake Module |
With terminal IG1 voltage at 9.5 V or more, data cannot be received from the No. 2 skid control ECU (brake actuator assembly) for 1 second or more. |
|
Does not come on |
Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) |
|
U115000 |
Lost Communication with Hybrid Powertrain Control Module (ch2) |
When terminal IG2 voltage is 9.5 V or more, data from the hybrid vehicle control ECU cannot be received for 2 seconds or more. |
|
Comes on |
|
|
U117D87 |
Lost Communication with Brake System Control Module (ch4) Missing Message |
When the voltage at terminal IG1 is 9.5 V or more, communication between the No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly) is not possible for 2 seconds or more. |
|
Comes on |
|
|
U149257 |
Software incompatibility with Hybrid/EV Powertrain Control Module Invalid/Incompatible Software Component |
Either of the following is detected:
|
|
Does not come on |
Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) |
U149257 DTC Detection Conditions
|
Vehicle Condition |
|||
|---|---|---|---|
|
Pattern 1 |
Pattern 2 |
||
|
Diagnosis Condition |
- |
- |
- |
|
Malfunction Status |
The engine type, powertrain variation and destination information sent from the hybrid vehicle control ECU do not match the information stored in the No. 1 skid control ECU (brake booster with master cylinder assembly) |
○ |
- |
|
No system information stored in the No. 1 skid control ECU (brake booster with master cylinder assembly) |
- |
○ |
|
|
Detection Time |
- |
- |
|
|
Number of Trips |
1 trip |
1 trip |
|
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
MONITOR DESCRIPTION
U0110 (Case 2), U0293 (Case 2) and U1150 (Case 2):
- When a communication error with any ECU continues for a certain amount of time or communication is unstable (communication is invalid for a certain amount of time a certain amount of times), the No. 2 skid control ECU (brake actuator assembly) judges that communication with the respective ECU is abnormal and illuminates the MIL and stores a DTC
U0129:
- When communication between the No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly) is not possible via Bus4 (C1-bus), the No. 2 skid control ECU (brake actuator assembly) judges that there is a CAN communication error, the MIL is illuminated and a DTC is stored.
U117D:
- When communication between the No. 1 skid control ECU (brake booster with master cylinder assembly) and No. 2 skid control ECU (brake actuator assembly) is not possible via Bus2 (PL-bus), the No. 2 skid control ECU (brake actuator assembly) judges that there is a CAN communication error, the MIL is illuminated and a DTC is stored.
MONITOR STRATEGY
| *: Electronically Controlled Brake System | |
|
Related DTCs |
U0110 (Case 2): Lost communication with drive motor control module "A" U0129: Lost communication with ECB*_ECU (C-bus) U0293 (Case 2): Lost communication with HV (C1-Bus) U1150 (Case 2): Lost communication with HV (PL-Bus) U117D: Lost communication with ECB*_ECU (P-bus) |
|
Required Sensors/Components(Main) |
No. 2 skid control ECU (brake actuator assembly) |
|
Required Sensors/Components(Related) |
No. 2 skid control ECU (brake actuator assembly) |
|
Frequency of Operation |
Continuous |
|
Duration |
2 seconds |
|
MIL Operation |
Immediately |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
U0110 (Case 2)
|
Monitor runs whenever the following DTCs are not stored |
C14C8: Brake system voltage circuit high U0293 (Case 1): Lost communication with HV (C-Bus) U0293 (Case 2): Lost communication with HV (C1-bus) |
|
All of the following conditions are met |
A and B |
|
A. VM1 voltage |
Higher than 7.3 V, and less than 23.2 V |
|
B. Following condition is met |
3 seconds or more |
|
IG2 voltage |
less than 9.5 V |
U0129 and U117D
|
Monitor runs whenever the following DTCs are not stored |
C123E: Brake system voltage input open circuit C137C: Brake system voltage input out of range low C137D: Brake system voltage input out of range high C14C7 (Case 1 and 2): Brake system voltage circuit low C14C8: Brake system voltage circuit high |
|
IG1 |
On |
U0293 (Case 2)
|
Monitor runs whenever the following DTCs are not stored |
C137C (Case 5 and 6): Brake system voltage input out of range low C137D: Brake system voltage input out of range high C14C8: Brake system voltage circuit high |
|
Both of the following conditions are met |
A and B |
|
A. VM1 voltage |
Higher than 7.3 V, and less than 23.2 V |
|
B. Following condition is met |
3 seconds or more |
|
IG2 voltage |
Higher than 9.5 V |
U1150 (Case 2)
|
Monitor runs whenever the following DTCs are not stored |
C137C (Case 5 and 6): Brake system voltage input out of range low C137D: Brake system voltage input out of range high C14C8: Brake system voltage circuit high U0293 (Case 1): Lost communication with HV (C-Bus) U0293 (Case 2): Lost communication with HV (C1-Bus) |
|
Both of the following conditions are met |
A and B |
|
A. VM1 voltage |
Higher than 7.3 V, and less than 23.2 V |
|
B. Following condition is met |
3 seconds or more |
|
IG2 voltage |
Higher than 9.5 V |
TYPICAL MALFUNCTION THRESHOLDS
U0110 (Case 2)
|
Communication status with inverter with converter assembly (PL-Bus) |
Invalid |
U0129
| *: Electronically Controlled Brake System | |
|
Communication status with ECB* (C-bus) |
Invalid |
U0293 (Case 2)
|
Communication status with hybrid vehicle control ECU (C1-Bus) |
Invalid |
U1150 (Case 2)
|
Communication status with hybrid vehicle control ECU (PL-Bus) |
Invalid |
U117D
| *: Electronically Controlled Brake System | |
|
Communication status with ECB* (P-bus) |
Invalid |
COMPONENT OPERATING RANGE
U0110 (Case 2)
|
Communication status with inverter with converter assembly (PL-Bus) |
Valid |
U0129
| *: Electronically Controlled Brake System | |
|
Both of the following conditions are met |
- |
|
IG1 |
On |
|
Communication status with ECB* (C-bus) |
Valid |
U0293 (Case 2)
|
Communication status with hybrid vehicle control ECU (C1-Bus) |
Valid |
U1150 (Case 2)
|
Communication status with hybrid vehicle control ECU (PL-Bus) |
Valid |
U117D
| *: Electronically Controlled Brake System | |
|
Both of the following conditions are met |
- |
|
IG1 |
On |
|
Communication status with ECB* (PL-bus) |
Valid |
CONFIRMATION DRIVING PATTERN
NOTICE:
When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.
HINT:
- After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off.
- Turn the ignition switch to ON (READY) and turn the GTS on.
-
Wait for 6 seconds or more. [*]
HINT:
[*]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Enter the following menus: Chassis / Brake/EPB / Utility / All Readiness.
-
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE, perform driving pattern again.
PROCEDURE
|
1. |
CHECK DTC (HEALTH CHECK) |
(a) Perform the Health Check using the GTS.
|
Result |
Proceed to |
|---|---|
|
DTCs other than CAN communication system DTCs are output |
A |
|
Only CAN communication system DTCs are output |
B |
|
Other than above |
C |
| A |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM) |
| B |
|
| C |
|
|
|