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Home >> Infiniti >> 2004 >> I35 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System >> DTC P0507: ISC System >> Diagnostic Procedure
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Diagnostic Procedure

  1. CHECK INTAKE AIR LEAK 
    1. Start engine and let it idle.
    2. Listen for an intake air leak after the mass air flow sensor.

      OK or NG 

    1. OK: GO TO 2.
    2. NG: Discover air leak location and repair.
  2. REPLACE ECM 
    1. Stop engine.
    2. Replace ECM.
    3. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM - NATS)  .
    4. Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING  .
    5. Perform THROTTLE VALVE CLOSED POSITION LEARNING  .
    6. Perform IDLE AIR VOLUME LEARNING  .
    1. : INSPECTION END 
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