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Home >> Subaru >> 2014 >> BRZ Premium >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting System (Exterior) >> Lighting system >> How to troubleshoot

How to troubleshoot

  1. Bring in the car

    Next

  2. Interview and phenomenon check

    Next

  3. Communication function inspection of the CAN communication system
    1. Check CAN communication system. (Refer to HOW TO TROUBLESHOOT )
      RESULT

      Result Go to
      Functioning properly A
      Not functioning properly B

      B: To the CAN communication system (Refer to HOW TO TROUBLESHOOT )

      A: Go to Next Step

  4. DTC check
    NOTE: Refer to CHECK LIST FOR INTERVIEW  .
    1. DTC check
      1. Record the diagnostic codes.
    2. Clear diagnostic code
    3. Do a DTC check again.
      1. Based on the recorded diagnostic codes, reproduce the trouble phenomenon, and check if the diagnostic codes are output again.
      NOTE: When the diagnostic codes are output, (Refer to LIST OF DIAGNOSTIC CODES  )
      RESULT

      Result Go to
      No code, can check and reproduce phenomenon A
      No code, can't check and reproduce phenomenon B
      Code is output C

      B: See trouble simulation

      C: See inspection step  7

      A: Go to Next Step

  5. Symptom table
    NOTE: Refer to SYMPTOM TABLE  .
    RESULT

    Result Go to
    Not applicable to the symptom table. A
    Applicable to the symptom table. B

    B: See inspection step  7

    A: Go to Next Step

  6. Based on the trouble phenomenon, perform troubleshooting following the steps below.
    1. Function check (refer to FUNCTION INSPECTION  )
    2. ECM terminal matrix (Refer to ECM TERMINAL ARRANGEMENT  )
    3. [Current Data Display & Save] / [System Operation Check Mode] (Refer to CURRENT DATA DISPLAY & SAVE / SYSTEM OPERATION CHECK MODE  )
    4. Symptom table (Refer to SYMPTOM TABLE  )
    5. On-vehicle inspection
    6. Unit inspection

      Next

  7. Adjustment, repair, or replacement

    Next

  8. Confirmation test

    Next: Complete

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