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Home >> Infiniti >> 2010 >> M45 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0460 To P1421 >> DTC P0461 Fuel Level Sensor >> Overall Function Check
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Overall Function Check

Use this procedure to check the overall function of the fuel level sensor. During this check, a 1st trip DTC might not be confirmed.

WARNING: When performing the following procedure, always observe the handling of the fuel. Refer to "GENERAL PRECAUTION ".

TESTING CONDITION: 

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

WITH CONSULT-III

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 CHECK ".
  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-III.
  7. Check "FUEL LEVEL SE" output voltage and note it.
  8. Select "FUEL PUMP RELAY" in "ACTIVE TEST" mode with CONSULT-III.
  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 "DIAGNOSIS 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 CHECK ".
  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 "DIAGNOSIS PROCEDURE ".
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