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Home >> Infiniti >> 2004 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System >> Trouble Diagnosis For Intermittent Incident >> Diagnostic Procedure
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Diagnostic Procedure

  1. INSPECTION START 

    Erase (1st trip) DTCs. Refer to HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION .

    : GO TO STEP 2.

  2. CHECK GROUND TERMINALS 

    Check ground terminals for corroding or loose connection.

    Refer to HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT , "CIRCUIT INSPECTION", "Ground Inspection".

    OK or NG

    OK: GO TO STEP 3.

    NG: Repair or replace.

  3. SEARCH FOR ELECTRICAL INCIDENT 

    Perform HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT , "INCIDENT SIMULATION TESTS".

    OK or NG

    OK: GO TO STEP 4.

    NG: Repair or replace.

  4. CHECK CONNECTOR TERMINALS 

    Refer to HOW TO CHECK TERMINAL , "HOW TO PROBE CONNECTORS", "How to Check Enlarged Contact Spring of Terminal".

    OK or NG

    OK: INSPECTION END 

    NG: Repair or replace connector.