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Home >> Nissan-Datsun >> 2004 >> Frontier Base, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System - VG33ER) >> DTC P0461: Fuel Level Sensor >> Overall Function Check >> Testing Condition:

Testing Condition:

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

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

WITH CONSULT-II 

NOTE: Start from step 11, if it is possible to confirm that the fuel cannot be drained by 30l (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.
  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 30l (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 30l (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 "FUEL LEVEL SENSOR UNIT CHECK ".

    Fig 1: Displaying Data Monitor
    G00768224Courtesy of NISSAN MOTOR CO., U.S.A.

WITH GST 

NOTE: Start from step  10, if it is possible to confirm that the fuel cannot be drained by 30l (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 ground.
  7. Turn ignition switch ON.
  8. Check voltage between ECM terminal 46 and ground and note it.
  9. Drain fuel by 30l (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 30l (7-7/8 US gal, 6-5/8 Imp gal).
  11. Confirm that the voltage between ECM terminal 46 and ground changes more than 0.03V during step 8 - 10.

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

    Fig 2: Checking Voltage Between ECM Terminal 46 And Ground
    G00768225Courtesy of NISSAN MOTOR CO., U.S.A.
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