Early Models (With Last 6 Digits Of VIN Less Than 450021)

1. To check power source, turn ignition on. Check voltage between instrument cluster connector terminal No. 25 and ground. See Fig 1 . If battery voltage is present, go to step 3).
2. If battery voltage is not present, check for blown fuse or fusible link. Check power circuit between battery terminal and instrument cluster. See appropriate chassis wiring diagram in the appropriate WIRING DIAGRAMS  article below in the WIRING DIAGRAMS section.
   • WIRING DIAGRAMS - EARLY
   • WIRING DIAGRAMS - LATE
3. Check ignition switch and relay. Turn ignition on. Connect a jumper wire between fuel gauge terminal "B(1)" and ground. See Fig 2 . If gauge needle does not move smoothly to FULL, replace gauge. If needle moves smoothly to FULL, check continuity between instrument cluster connector terminal No. 6 and ground. See Fig 3 .
4. If continuity is not present, repair or replace wire harness between instrument cluster and fuel tank sending unit. If continuity is present, test fuel tank sending unit. See FUEL TANK SENDING UNIT  under TESTING.

Fig 1: Instrument Cluster Terminal ID (Early Models)

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

Fig 2: Testing Fuel & Temperature Gauges

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

Fig 3: Checking Gauge Circuit Continuity (Early Models)

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