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Home >> Lexus >> 2015 >> IS 250 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Symptom Tests (2 Of 2) & Circuit Tests >> Meter / Gauge System >> Meter Illumination is Always Dark [04/2013 - 10/2016] >> Procedure

Meter Illumination is Always Dark [04/2013 - 10/2016]: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if CAN communication DTCs are output.

      Refer to DIAGNOSIS SYSTEM [04/2013 - 06/2014] , or refer to DIAGNOSIS SYSTEM [06/2014 - 08/2015] , or refer to DIAGNOSIS SYSTEM [08/2015 - 10/2016]

      Result

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

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - 10/2016] 

    Result: 

    See step  2

  2. READ VALUE USING TECHSTREAM (LIGHT SENSOR ILLUMINANCE) 
    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. Check the values by referring to the table below.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Light Sensor Illuminance Light sensor illuminance 0 lx to 8191 lx Value output according to ambient light levels -

      Body Electrical > Main Body > Data List 

      Tester Display
      Light Sensor Illuminance

      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: 

    CHECK CUSTOMIZE PARAMETER SETTING (SENSITIVITY). Refer to  CUSTOMIZE PARAMETERS [04/2013 - 10/2016] 

    Result: 

    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 [04/2013 - ]

      OK

      The operation of the combination meter assembly returns to normal.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [04/2013 - 10/2016]