Toyota CH-R Service Manual: CAN Communication Failure (Message Registry) (U1000)

Toyota CH-R Service Manual / Lighting (ext) / Lighting System / CAN Communication Failure (Message Registry) (U1000)

DESCRIPTION

The headlight ECU sub-assembly LH stores this DTC if it detects an internal malfunction related to the CAN communication system.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
U1000	CAN Communication Failure (Message Registry)	CAN communication failure	Headlight ECU sub-assembly LH	-

CAUTION / NOTICE / HINT

NOTICE:

If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

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PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

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Body Electrical > HL AutoLeveling > Clear DTCs

2.	CHECK FOR DTC

(a) Turn the ignition switch to ON.

(b) Check for DTCs.

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Body Electrical > HL AutoLeveling > Trouble Codes

OK:

DTC U1000 is not output.

USE SIMULATION METHOD TO CHECK

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

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