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Home >> Infiniti >> 2015 >> Q60 Base, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Trouble Codes (DTCS) P0447-P2123) (Convertible) >> DTC/Circuit Diagnosis >> DTC P0507: ISC System >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

  1. CHECK PCV HOSE CONNECTION

    Confirm that PCV hose is connected correctly.

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair or replace.

  2. CHECK INTAKE AIR LEAK

    1. Start engine and let it idle.
    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 STEP 3  .

  3. REPLACE ECM

    1. Stop engine.
    2. Replace ECM.
    3. Go to SPECIAL REPAIR REQUIREMENT .

    INSPECTION END

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