METER / GAUGE SYSTEM Meter Illumination is Always Dark

DESCRIPTION

The combination meter assembly receives signals from this circuit to adjust the illumination of the combination meter assembly. The combination meter assembly sets the illumination level based on the user operation of the light control rheostat switch.

WIRING DIAGRAM

A01MIO2E01
*1 Main Body ECU (Multiplex Network Body ECU)
*2 CAN Communication Line
*3 Combination Meter Assembly

CAUTION / NOTICE / HINT

Note

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

Tech Tips

The automatic light control sensor sensitivity can be customized.

Click here

PROCEDURE


  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)


    1. Check for DTCs.

      for LHD: Click here

      for RHD: Click here

      OK
      No DTCs are output.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK FOR DTC (LIGHTNG SYSTEM)


    1. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      Result
      Result Proceed to
      DTC B1244 is not output. A
      DTC B1244 is output. B

    B

    GO TO DTC B1244 Click here

    A

  3. CHECK COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly.

      Click here

      OK
      The operation of the combination meter assembly returns to normal.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    END (COMBINATION METER ASSEMBLY IS DEFECTIVE)

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    C

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here