Fuel Gauge

WARNING: This page is about a different car, the 2004 Nissan Maxima. 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 shifts 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

Select "METER A/C AMP" on CONSULT-II.
Using "FUEL METER" on the data monitor, compare the value of data monitor with fuel gauge pointer of combination meter.

FUEL GAUGE POINTER SPECIFICATION

Fuel gauge pointer	Reference value of data monitor (lit.) (Approx.)
Full	81
Three quarters	61
Half	41
One quarter	21
Empty	2

Fig 1: Checking Unified Meter And A/C Amp. Input Signal

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 2.
NG: Replace the combination meter.

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, refer to REMOVAL AND INSTALLATION .
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 harness connector B16 terminal 2 (G) and unified meter and A/C amp. harness connector M50 terminal 28 (L).
  Continuity should exist.
3. Check continuity between fuel level sensor unit and fuel pump harness connector B16 terminal 2 (G) and ground.
  Continuity should not exist.
  
  Fig 2: Checking Fuel Level Sensor Circuit 1
  Courtesy of NISSAN MOTOR CO., U.S.A.
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 harness connector B16 terminal 5 (B) and unified meter and A/C amp. harness connector M50 terminal 36 (B).
  Continuity should exist.
2. Check continuity between fuel level sensor unit and fuel pump harness connector B16 terminal 5 (B) and ground.
Continuity should not exist.

Fig 3: Checking Fuel Level Sensor Circuit 2
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 5.
2. NG: Repair harness or connector.
CHECK INSTALLATION CONDITION
Check fuel level sensor unit installation, and determine 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.