HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for AWD with NICKEL METAL HYDRIDE BATTERY): U010087,...,U117087; Lost Communication with ECM/PCM "A" Missing Message; 2019 - 2021 MY RAV4 HV [02/2019

Last Modified: 05-08-2025	6.11:8.1.0	Doc ID: RM100000001H3KM
Model Year Start: 2019	Model: RAV4 HV	Prod Date Range: [02/2019 - 12/2021]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for AWD with NICKEL METAL HYDRIDE BATTERY): U010087,...,U117087; Lost Communication with ECM/PCM "A" Missing Message; 2019 - 2021 MY RAV4 HV [02/2019 - 12/2021]

DTC

U010087

Lost Communication with ECM/PCM "A" Missing Message

DTC

U010487

Lost Communication with Cruise Control Module Missing Message

DTC

U011087

Lost Communication with Drive Motor Control Module "A" Missing Message

DTC

U012287

Lost Communication with Vehicle Dynamics Control Module Missing Message

DTC

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

DTC

U012987

Lost Communication with Brake System Control Module Missing Message

DTC

U014087

Lost Communication with Body Control Module Missing Message

DTC

U015187

Lost Communication with Restraints Control Module Missing Message

DTC

U016487

Lost Communication with HVAC Control Module Missing Message

DTC

U029387

Lost Communication with Hybrid/EV Powertrain Control Module Missing Message

DTC

U110787

Lost Communication with Power Management Module Missing Message

DTC

U117087

Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message

DESCRIPTION

The hybrid vehicle control ECU assembly transmits and receives signals via CAN communication to and from the ECM, yaw rate sensor, skid control ECU assembly, power steering ECU assembly, main body ECU, airbag sensor assembly, and air conditioning amplifier assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate
U010087	Lost Communication with ECM/PCM "A" Missing Message	A CAN communication error between the ECM and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Comes on	Master Warning: Comes on
U010487	Lost Communication with Cruise Control Module Missing Message	A CAN communication error between the cruise control module and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Does not come on
U011087	Lost Communication with Drive Motor Control Module "A" Missing Message	A CAN communication error between the MG ECU and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Comes on
U012287	Lost Communication with Vehicle Dynamics Control Module Missing Message	A CAN communication error between the skid control ECU assembly and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Does not come on
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	A CAN communication error between the steering sensor and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Does not come on
U012987	Lost Communication with Brake System Control Module Missing Message	A CAN communication error (V BUS) between the skid control ECU assembly and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Comes on
U014087	Lost Communication with Body Control Module Missing Message	A CAN communication error between the main body ECU and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Comes on
U015187	Lost Communication with Restraints Control Module Missing Message	A CAN communication error between the airbag sensor assembly and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Comes on
U016487	Lost Communication with HVAC Control Module Missing Message	A CAN communication error between the air conditioning amplifier assembly and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Does not come on
U029387	Lost Communication with Hybrid/EV Powertrain Control Module Missing Message	A CAN communication error between the skid control ECU assembly and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Does not come on
U110787	Lost Communication with Power Management Module Missing Message	A CAN communication error between the certification ECU (smart key ECU assembly) and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Comes on
U117087	Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message	A CAN communication error between the skid control ECU assembly and hybrid vehicle control ECU assembly (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Does not come on	Master Warning: Comes on

MONITOR DESCRIPTION

If the hybrid vehicle control ECU assembly detects a problem with CAN communication with the ECU, it will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs	U0100 (INF U010087): Lost communication with ECM/PCM verify communication
Required sensors/components	Main: Hybrid vehicle control ECU assembly Sub: CAN bus line
Frequency of operation	Continuous
Duration	TMC's intellectual property
MIL operation	Immediately
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored	TMC's intellectual property
Other conditions belong to TMC's intellectual property	-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

COMPONENT OPERATING RANGE

Hybrid vehicle control ECU assembly

DTC U0100 (INF U010087) is not detected

CONFIRMATION DRIVING PATTERN

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.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Connect the Techstream to the DLC3.
Turn the ignition switch to ON and turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and turn the Techstream on.
Turn the ignition switch to ON (READY) and wait for 2 minutes or more. [*1]
HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / Hybrid Control / 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 the normal judgment procedure again.

PROCEDURE

1.	CHECK DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Check for DTCs.

Result	Proceed to
Hybrid vehicle control ECU assembly outputs P253012.	A
Hybrid vehicle control ECU assembly does not output P253012.	B

(e) Turn the ignition switch off.

GO TO DTC CHART (P253012)

GO TO CAN COMMUNICATION SYSTEM