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Home >> Lexus >> 2017 >> ES 350 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System (Diagnostic Codes & Symptom Tests) >> Meter / Gauge System >> Symptom Tests >> Meter Illumination is Always Dark [07/2015 - ] >> Procedure

Meter Illumination is Always Dark [07/2015 - ]: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if CAN communication DTCs are output (Refer to DIAGNOSIS SYSTEM [07/2015 - 08/2016] Refer to DIAGNOSIS SYSTEM [08/2016 - ] w/ Central Gateway ECU. Refer to DIAGNOSIS SYSTEM [07/2015 - 08/2016] Refer to DIAGNOSIS SYSTEM [08/2016 - ] w/o Central Gateway ECU).

      Result

      Result Proceed to
      CAN communication DTCs are not output. A
      CAN communication DTCs are output (w/ Central Gateway ECU). B
      CAN communication DTCs are output (w/o Central Gateway ECU). C

    Result:  B

    B 

    GO TO CAN COMMUNICATION SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ] )

    Result:  C

    C 

    GO TO CAN COMMUNICATION SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ] )

    Result:  A

    A 

    See step  2

  2. READ VALUE USING TECHSTREAM (ILLUMINATION RATE INFO) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. Read the Data List according to the display on the Techstream.
      MAIN BODY

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Illumination Rate Info Illumination rate information/0.00 ms. to 2162.65 ms. Value is output according to ambient light levels -

      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

    Result:  B

    B 

    CHECK CUSTOMIZE PARAMETER SETTING (SENSITIVITY) 

    (Refer to CUSTOMIZE PARAMETERS [07/2015 - ] )

    Result:  A

    A 

    See step  3

  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 (Refer to REMOVAL [07/2015 - ] ).

      OK

      The operation of the combination meter assembly returns to normal.

    Result:  OK

    OK 

    END 

    Result:  NG

    NG 

    REPLACE COMBINATION METER ASSEMBLY 

    (Refer to REMOVAL [07/2015 - ] )