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How To Proceed With Troubleshooting

HINT:

  1. VEHICLE BROUGHT TO WORKSHOP 
  2. INSPECT BATTERY VOLTAGE 

    Standard voltage: 11 to 14 V 

    If the voltage is below 11 V, recharge or replace the battery before proceeding.

  3. CHECK FOR DTC* 
    1. Check for DTCs and note any codes that are output (See DTC CHECK / CLEAR ).
    2. Clear the DTCs (See DTC CHECK / CLEAR ).
    3. Recheck for DTCs. Based on the DTCs output above, try to force output of the same CAN communication system DTC or meter/gauge system DTC by simulating the symptoms indicated by the DTC.

      Result 

    DTC RESULT REFERENCE

    Result Proceed to
    DTC is not output A
    CAN communication system DTC is output B
    Meter/gauge system DTC is output C

    B: Go to CAN COMMUNICATION SYSTEM  (See CAN COMMUNICATION SYSTEM )

    C: Go to DIAGNOSTIC TROUBLE CODE CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

    A: Go to Next Step 

  4. PROBLEM SYMPTOMS TABLE 
    1. Refer to the Problem Symptoms Table (See PROBLEM SYMPTOMS TABLE ).

      Result 

    DTC RESULT REFERENCE

    Result Proceed to
    Fault is not listed in problem symptoms table A
    Fault is listed in problem symptoms table B

    B:  Go to step  7

    A: Go to Next Step 

  5. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Terminals of ECU (See TERMINALS OF ECU )
    2. Data List / Active Test (See DTC CHECK / CLEAR )
    3. Operation Check (See OPERATION CHECK )
  6. REPAIR OR REPLACE 
  7. CONFIRMATION TEST 

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