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Home › Nissan-Datsun › 2008 › Altima Hybrid › Repair and Diagnosis › Engine Performance › Engine Control Systems › Engine Control System (Hybrid) › Component Diagnosis › P0507 ISC System › Diagnosis Procedure

Diagnosis Procedure

  1. CHECK PCV HOSE CONNECTION

    Confirm that PCV hose is connected correctly.

    Is the inspection result normal? 

    YES : GO TO 2.

    NO : Repair or replace.

  2. CHECK INTAKE AIR LEAK
    1. Activate "INSPECTION MODE 1 " to start engine.
    2. Listen for an intake air leak after the mass air flow sensor.

    Is intake air leak detected? 

    YES : Discover air leak location and repair.

    NO : GO TO 3.

  3. REPLACE ECM
    1. Replace ECM.
    2. Go to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement ".

    INSPECTION END

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