HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): U010087,...,U117087; Lost Communication with ECM/PCM "A" Missing Message; 2020 - 2022 MY Corolla Corolla HV [01/2019

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001GCLA
Model Year Start: 2020	Model: Corolla	Prod Date Range: [01/2019 - 09/2022]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): U010087,...,U117087; Lost Communication with ECM/PCM "A" Missing Message; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]

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

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 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 (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 (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 (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Comes on / 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 (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 (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Comes on / 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 (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 (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 (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 (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 (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 (CAN communication system malfunction) occurs (1 trip detection logic)	CAN communication system	Comes on / Does not come on	Master Warning: Comes on

MONITOR DESCRIPTION

If the hybrid vehicle control ECU 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 U0110 (INF U011087): Lost communication with drive motor "A" control module verify communication U0129 (INF U012987): Lost communication with brake system control module verify communication U1170 (INF U117087): Lost communication with brake system control module verify communication
Required sensors/components	Main: Hybrid vehicle control ECU 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

DTC U0100 (INF U010087) is not detected

DTC U0110 (INF U011087) is not detected

DTC U0129 (INF U012987) is not detected

DTC U1170 (INF U117087) 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 power switch on (IG) and turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for 2 minutes or more.
Turn the power switch on (IG) and turn the Techstream on.
Turn the power switch 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 or N/A, perform the normal judgment procedure again.

CAUTION / NOTICE / HINT

NOTICE:

Be sure to check that the applicable DTC is output from the hybrid control system.

PROCEDURE

1.	CHECK DTC OUTPUT (HEALTH CHECK)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Check for DTCs.

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

(e) Turn the power switch off.

GO TO DTC CHART (P253012)

GO TO CAN COMMUNICATION SYSTEM