Fuel Gauge

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

Depending on vehicle position or driving circumstance, the fuel in the tank flows and the pointer may fluctuate.
If the vehicle is fueled with the ignition switch ON, the pointer will move slowly.

CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
1. Select METER A/C AMP on CONSULT-II.
2. Using FUEL METER on the data monitor, compare the value of data monitor with fuel gauge pointer of combination meter.
OK or NG
1. OK : GO TO 2.
2. NG : Replace the combination meter.
Fig 2: CONSULT-II DATA MONITOR Screen
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK FUEL LEVEL SENSOR
Check components. Refer to FUEL LEVEL SENSOR UNIT CHECK .

OK or NG
1. OK : GO TO 3.
2. NG : Replace the fuel level sensor unit.
CHECK FUEL LEVEL SENSOR CIRCUIT 1
1. Disconnect fuel level sensor unit and fuel pump (main) connector and unified meter and A/C amp. connector.
2. Check continuity between fuel level sensor unit and fuel pump (main) harness connector B17 terminal 2 (G/B) and unified meter and A/C amp. harness connector M50 terminal 28 (G/B).
  Continuity should exist.
3. Check continuity between fuel level sensor unit and fuel pump (main) harness connector B17 terminal 2 (G/B) and ground.
  
  Fig 3: Checking Continuity Between Fuel Level Sensor Unit And Fuel Pump And Unified Meter And A/C Amp.
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Continuity should not exist.
OK or NG
1. OK : GO TO 4.
2. NG : Repair harness or connector.
CHECK FUEL LEVEL SENSOR CIRCUIT 2
1. Check continuity between fuel level sensor unit and fuel pump (main) harness connector B17 terminal 5 (B/W) and unified meter and A/C amp. harness connector M50 terminal 36 (B/W).
  
  Fig 4: Checking Continuity Between Fuel Level Sensor Unit And Fuel Pump And Unified Meter And A/C Amp
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Continuity should exist.
2. Check continuity between fuel level sensor unit and fuel pump (main) harness connector B17 terminal 5 (B/W) and ground.
  Continuity should not exist.
OK or NG
1. OK : GO TO 5.
2. NG : Repair harness or connector.
CHECK INSTALLATION CONDITION
Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any of the internal components in the fuel tank.

OK or NG
1. OK : Replace the unified meter and A/C amp. Refer to REMOVAL AND INSTALLATION OF UNIFIED METER AND .
2. NG : Install the fuel level sensor unit properly.