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HOMESERVICE MANUALSINFINITI2006FX35 AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 7 (ENGINE CONTROL SYSTEM - DTCS P0451 TO P1212 (VK45DE))DTC P0507 ISC SYSTEMDIAGNOSTIC PROCEDURE
2006 Infiniti FX35 AWD

Diagnostic Procedure

2006 Infiniti FX35 AWDSECTION Diagnostic Procedure
WARNING: This page is about a different car, the 2006 Infiniti FX45. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK PCV HOSE CONNECTION 

    Confirm that PCV hose is connected correctly.

    OK or NG 

    OK : GO TO 2.

    NG : 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.

    OK or NG 

    OK : GO TO 3.

    NG : Discover air leak location and repair.

  3. 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 "ECM RE-COMMUNICATING FUNCTION ".
    4. Perform "VIN Registration ".
    5. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".
    6. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
    7. Perform "IDLE AIR VOLUME LEARNING ".

      : INSPECTION END 

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.