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Home >> Scion >> 2014 >> iQ EV >> Repair and Diagnosis >> Electrical >> Gauges >> Meter / Gauge / Display (Diagnostics & Symptom Tests) (Electric) >> Meter / Gauge System >> Symptom Tests >> Meter Illumination is Always Dark >> Procedure

Meter Illumination is Always Dark: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if CAN communication DTCs are output. Refer to DIAGNOSIS SYSTEM .
      RESULT

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

    B → See step   6 

    A: Go to next step 

  2. READ VALUE USING TECHSTREAM (ILLUMINATION RATE INFO) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power 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.
      MAIN BODY

      Techstream Display Measurement Item/Range Normal Condition Diagnostic Note
      Illumination Rate Info Illumination rate information/0 ms. to 2162.65 ms. Value is output according to ambient light levels Value changes 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

    B → See step   5 

    A: Go to next step 

  3. REPLACE COMBINATION METER ASSEMBLY 
    1. Replace the combination meter assembly with a new or known good one. Refer to REMOVAL .

      OK

      The operation of the combination meter assembly returns to normal.

    NG → See step   4 

    OK → END 

  4. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL 
  5. CHECK CUSTOMIZE PARAMETER SETTING (SENSITIVITY). Refer to  CUSTOMIZE PARAMETERS 
  6. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING