Inspection/Fuel Level Sensor Unit

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

CHECK GROUND CIRCUIT FOR FUEL LEVEL SENSOR UNIT
1. Turn ignition switch to OFF position.
2. Disconnect combination meter connector and fuel level sensor connector.
3. Check continuity between combination meter harness connector M24 terminal 23 (B) and fuel level sensor unit harness connector B12 terminal 2 (B).
4. Check continuity between combination meter harness connector M24 terminal 23 and ground.
  
  Fig 1: Checking Ground Circuit For Fuel Level Sensor Unit
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 2 .
2. NG: Repair harness or connector.
CHECK FUEL LEVEL SENSOR UNIT
Refer to "FUEL LEVEL SENSOR UNIT CHECK .

OK or NG
1. OK: GO TO 3 .
2. NG: Replace fuel level sensor unit.
CHECK HARNESS FOR OPEN OR SHORT
1. Disconnect combination meter connector and fuel level sensor unit connector.
2. Check continuity between combination meter terminal 17 and fuel level sensor unit terminal 3.
3. Check continuity between combination meter terminal 17 and ground.
  
  Fig 2: Checking Harness For Open Or Short
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Fuel level sensor unit is OK.
2. NG: Repair harness or connector.