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Home >> Nissan-Datsun >> 2004 >> Frontier Base, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Control System - VG33E) >> DTC P0461: Fuel Level Sensor >> Overall Function Check
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Overall Function Check

WARNING: This page is about a different variant/trim than selected.

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

WARNING: When performing following procedure, be sure to observe the handling of the fuel. Refer to "FUEL TANK ".

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 5 seconds then turn ON.
  6. Select "FUEL LEVEL SE" in "DATA MONITOR" mode with CONSULT-II.
    Fig 1: Reading "FUEL LEVEL SE" In "DATA MONITOR" Mode
    G00743023Courtesy 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, check the fuel level sensor, refer to INSPECTION/FUEL LEVEL SENSOR UNIT ".

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 OFF.
  6. Set voltmeters probe between ECM terminal 46 (fuel level sensor signal) and engine ground.
    Fig 2: Checking Voltage Between ECM Terminal 46 And Engine Ground
    G00743024Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Turn ignition switch ON.
  8. Check voltage between ECM terminal 46 and engine ground and note it.
  9. Drain fuel by 30 l (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
  10. Fill fuel into the fuel tank for 30 l (7-7/8 US gal, 6-5/8 Imp gal).
  11. Confirm that the voltage between ECM terminal 46 and engine ground changes more than 0.03V during step 8 - 10.

    If NG, check component of fuel level sensor, refer to INSPECTION/FUEL LEVEL SENSOR UNIT ".

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