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Home >> Subaru >> 2019 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting System (Interior) >> Lighting System >> How To Troubleshoot

How To Troubleshoot

  1. Bring in the car
  2. Interview and phenomenon check
    NOTE: Refer to CHECK LIST FOR INTERVIEW .
  3. Inspection of CAN communication system
    1. Check all diagnostic codes to confirm that no diagnostic code is recorded.

    Result

    Result Go to
    No diagnostic code recorded A
    Diagnostic code recorded B

    B: Go to "CAN communication system". NW-30

    A: Go to next step

  4. 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: Go to step  6.

    A: Go to next step

  5. Based on the trouble phenomenon, perform troubleshooting following the steps below.
    1. Function inspection (Refer to LIGHTING SYSTEM )
    2. ECM terminal arrangement (Refer to ECM TERMINAL ARRANGEMENT )
    3. Data monitor/active test (Refer to DATA MONITOR/ACTIVE TEST )
    4. On-vehicle inspection
    5. Unit inspection
  6. Adjustment, repair, or replacement
  7. Confirmation test

    Complete

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