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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Engine Control System) >> Trouble Diagnosis >> DTC P0461: Fuel Level Sensor >> Overall Function Check >> Testing Condition
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Testing Condition

WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

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 in BASIC DIAGNOSTIC PROCEDURES - TITAN article.
  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.
  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 in BASIC DIAGNOSTIC PROCEDURES - TITAN article.
  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  .
    Fig 1: CONSULT-II Display
    G00343065Courtesy of NISSAN MOTOR CO., U.S.A.
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