METER / GAUGE SYSTEM Meter Illumination is Always Dark

DTC Code DTC Name
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.

Tip:

  • The meter illumination dims when the headlight dimmer switch assembly is turned to the tail, head, or AUTO position.

  • Setting the meter illumination to maximum brightness cancels the above dimming of the meter illumination.

WIRING DIAGRAM

E143765E86

CAUTION / NOTICE / HINT

Tip:

  • Setting the meter illumination to minimum brightness turns off the meter illumination when the headlight dimmer switch assembly is turned to the tail, head, or AUTO position.

  • Before starting the following inspection, check if lighting system DTCs are output.

    Click hereClick here

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM

    1. Check if CAN communication DTCs are output.

      Click hereClick hereClick here

    Result

    Result

    Proceed to

    CAN communication DTCs are not output.

    A

    CAN communication DTCs are output.

    B
    B

    GO TO CAN COMMUNICATION SYSTEM

    Click here

    A

  2. READ VALUE USING GTS (ILLUMINATION RATE INFO)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Check the values by referring to the table below.

      Body Electrical > Main Body > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Illumination Rate Info

      Illumination rate information

      0.00 ms. to 2162.65 ms.

      Value output according to ambient light levels

      -

      Body Electrical > Main Body > Data List

      Tester Display

      Illumination Rate Info

      Result

      Result

      Proceed to

      The output value changes according to the ambient light level.

      A

      The output value does not change according to the ambient light level.

      B
    B

    CHECK CUSTOMIZE PARAMETER SETTING (SENSITIVITY)

    Click here

    A

  3. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    1. Replace the main body ECU (multiplex network body ECU) with a new or known good one.

      for LHD:Click here

      for RHD:Click here

      OK

      The operation of the combination meter assembly returns to normal.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

    REPLACE COMBINATION METER ASSEMBLY

    for Hatchback, Wagon:Click here

    for Sedan:Click here