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Home >> Nissan-Datsun >> 2012 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction (Qr25DE) >> Service Information >> Trouble Diagnosis For Intermittent Incident >> Diagnosis Procedure
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Diagnosis Procedure

  1. INSPECTION START

    Erase (1st trip) DTCs.

    Refer to "EMISSION-RELATED DIAGNOSTIC INFORMATION ".

    GO TO 2.

  2. CHECK GROUND TERMINALS

    Check ground terminals for corroding or loose connection.

    Refer to "GROUND INSPECTION ".

    OK or NG 

    OK: GO TO 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 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.