Toyota Corolla Cross: Lost Communication with TCM Missing Message (U010187,U010087,U012987,U013187,U014087,U015587,U024287,U029387)

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Exterior / Lighting (ext) / Lighting System (w/ Afs) / Lost Communication with TCM Missing Message (U010187,U010087,U012987,U013187,U014087,U015587,U024287,U029387)

DESCRIPTION

These DTCs are stored if a CAN communication malfunction occurs between the headlight ECU sub-assembly LH and other ECUs.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
U010087	Lost Communication with ECM/PCM "A" Missing Message	The headlight ECU sub-assembly LH does not receive data from the ECM for approximately 10 seconds or more.	CAN communication system
U010187	Lost Communication with TCM Missing Message	The headlight ECU sub-assembly LH does not receive data from the hybrid vehicle control ECU for approximately 10 seconds or more.	CAN communication system
U012987	Lost Communication with Brake System Control Module "A" Missing Message	The headlight ECU sub-assembly LH does not receive data from the brake actuator assembly (skid control ECU) for approximately 10 seconds or more.	CAN communication system
U013187	Lost Communication with Power Steering Control Module "A" Missing Message	The headlight ECU sub-assembly LH does not receive data from the power steering ECU assembly for approximately 10 seconds or more.	CAN communication system
U014087	Lost Communication with Body Control Module Missing Message	The headlight ECU sub-assembly LH does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more.	CAN communication system
U015587	Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message	The headlight ECU sub-assembly LH does not receive data from the combination meter assembly for approximately 10 seconds or more.	CAN communication system
U024287	Lost Communication with Headlamp Control Module "B" Missing Message	The headlight ECU sub-assembly LH does not receive data from the headlight ECU sub-assembly RH for approximately 10 seconds or more.	CAN communication system
U029387	Lost Communication with Hybrid/EV Powertrain Control Module Missing Message	The headlight ECU sub-assembly LH does not receive data from the hybrid vehicle control ECU for approximately 10 seconds or more.	CAN communication system

PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Headlight Control > Clear DTCs

2.	CHECK FOR DTC

(a) Turn the ignition switch to ON.

(b) Wait 30 seconds or more.

Body Electrical > Headlight Control > Trouble Codes

OK:

DTCs are not output.

USE SIMULATION METHOD TO CHECK

GO TO CAN COMMUNICATION SYSTEM

for HEV Model: Click here

for Gasoline Model: Click here

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Terminals Of Ecu

TERMINALS OF ECU NOTICE: DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the GTS once the inspection has been completed. Do not apply excessive force to the millimeter wave radar sensor assembly connector. CHEC

Toyota Corolla Cross: Lost Communication with TCM Missing Message (U010187,U010087,U012987,U013187,U014087,U015587,U024287,U029387)

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Terminals Of Ecu