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Home › Nissan-Datsun › 2004 › Quest SL › Repair and Diagnosis › Engine Performance › System › Engine Control System › Trouble Diagnosis For Intermittent Incident › Diagnostic Procedure

Diagnostic Procedure

  1. INSPECTION START 

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

    1. : GO TO 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 

    1. OK: GO TO 3.
    2. 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 

    1. OK: GO TO 4.
    2. 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 

    1. OK: INSPECTION END 
    2. NG: Repair or replace connector.
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