LIGHTING SYSTEM, Diagnostic DTC:U1000

DTC Code DTC Name
U1000 CAN Communication Failure (Message Registry)

DESCRIPTION

The No. 1 headlight ECU sub-assembly stores this DTC if it detects an internal malfunction related to the CAN communication system.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U1000 CAN Communication Failure (Message Registry) CAN communication failure

  • No. 1 headlight ECU sub-assembly LH

  • No. 1 headlight ECU sub-assembly RH

  • No. 1 headlight ECU sub-assembly LH

  • No. 1 headlight ECU sub-assembly RH

CAUTION / NOTICE / HINT

Note

If the No. 1 headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information.

Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Clear DTCs
      Body Electrical > HL AutoLeveling (Sub) > Clear DTCs

    2. Turn the engine switch on (IG).

    3. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      Body Electrical > HL AutoLeveling (Sub) > Trouble Codes
      OK
      DTC U1000 is not output.
      Result
      Result Proceed to
      OK A
      NG (DTC output from No. 1 headlight ECU sub-assembly LH) B
      NG (DTC output from No. 1 headlight ECU sub-assembly RH) C

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH Click here

    C

    REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH Click here