2004 Infiniti FX45FACTORY OEM SERVICE PROCEDURE

Testing Condition

Before starting overall function check, preparation of draining fuel and refilling fuel is required  .

With CONSULT-II 

NOTE: Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30 l (7-7/8 US gal, 6-5/8 Imp gal) in advance.
  1. Prepare a fuel container and a spare hose.
  2. Release fuel pressure from fuel line, Refer to FUEL PRESSURE RELEASE  .
  3. Remove the fuel feed hose on the fuel level sensor unit.
  4. Connect a spare fuel hose where the fuel feed hose was removed.
  5. Turn ignition switch OFF and wait at least 10 seconds then turn ON.
  6. Select FUEL LEVEL SE in DATA MONITOR mode with CONSULT-II.
    Fig 1: Displaying Fuel Information With CONSULT-II In Data Monitor Mode
    G00345065Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Check FUEL LEVEL SE output voltage and note it.
  8. Select FUEL PUMP in ACTIVE TEST mode with CONSULT-II.
  9. Touch ON and drain fuel approximately 30 l (7-7/8 US gal, 6-5/8 Imp gal) and stop it.
  10. Check FUEL LEVEL SE output voltage and note it.
  11. Fill fuel into the fuel tank for 30 l (7-7/8 US gal, 6-5/8 Imp gal).
  12. Check FUEL LEVEL SE output voltage and note it.
  13. Confirm whether the voltage changes more than 0.03V during step 7 to 10 and 10 to 12.

    If NG, go to DIAGNOSTIC PROCEDURE  .

With GST 

NOTE: Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30 l (7-7/8 US gal, 6-5/8 Imp gal) in advance.
  1. Prepare a fuel container and a spare hose.
  2. Release fuel pressure from fuel line. Refer to FUEL PRESSURE RELEASE  .
  3. Remove the fuel feed hose on the fuel level sensor unit.
  4. Connect a spare fuel hose where the fuel feed hose was removed.
  5. Turn ignition switch ON.
  6. Drain fuel by 30 l (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
  7. Confirm that the fuel gauge indication varies.
  8. Fill fuel into the fuel tank for 30 l (7-7/8 US gal, 6-5/8 Imp gal).
  9. Confirm that the fuel gauge indication varies.
  10. If NG, go to DIAGNOSTIC PROCEDURE  .
Factory Service Tools

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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.

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