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METER / GAUGE SYSTEM Meter Illumination is Always Dark

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DTC Code DTC Name
  Meter Illumination is Always Dark
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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.

Table 1. *1 Main Body ECU (Multiplex Network Body ECU) *2 Combination Meter Assembly *3 CAN Communication Line
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

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

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

Tip:

  • The meter illumination dims when the taillights are turned on.

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

  • Setting the meter illumination level to minimum brightness turns off the meter illumination.

  • The automatic light control sensor sensitivity can be customized.

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PROCEDURE


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    CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication DTCs are output.

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      Result
      Result Proceed to
      CAN communication DTCs are not output. A
      CAN communication DTCs are output. B

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    CHECK FOR DTC


    1. Check if lighting system DTCs are output.

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      1. Body Electrical > Main Body > Trouble Codes


      Result
      Result Proceed to
      DTC B1244 is not output. A
      DTC B1244 is output. B

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    CHECK COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly with a new one.

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    2. Check the operation.

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      OK
      The operation of the combination meter assembly returns to normal.
      Result
      Proceed to
      OK
      NG

    • OK

      END (COMBINATION METER ASSEMBLY IS DEFECTIVE)

    • NG

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