Testing Fuel Gauge

To check power source, turn ignition switch on. Check voltage between terminal No. 9 and ground. See Fig 15 . If battery voltage is present, go to step 3).
If battery voltage is NOT present, check for blown fuse or fusible link. Check harness continuity between battery terminal and combination meter. Check ignition relay and/or ignition switch for malfunction.
Turn ignition switch on. Check voltage between fuel gauge terminal "B" and ground. If approximately 8 volts are present, go to step 5).
If approximately 8 volts are NOT present, check combination meter printed circuit. If printed circuit is okay, check combination meter voltage regulator.
Turn ignition switch on. Connect a jumper wire with a 3.4 watt light bulb between fuel gauge terminal "A" and ground for less than 10 seconds. Ensure fuel gauge moves smoothly from EMPTY to FULL.
If fuel gauge does not move smoothly from EMPTY to FULL, replace fuel gauge. If fuel gauge moves smoothly from EMPTY to FULL, check wire harness continuity between terminal No. 15 and ground.
If continuity does NOT exist, repair or replace wire harness between combination meter and fuel gauge unit. If continuity exists, test fuel gauge sending unit. See FUEL GAUGE SENDING UNIT.

Fig 1: Diagnosing Warning Light & Wiring Schematic (1 of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Diagnosing Warning Light & Wiring Schematic (2 of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Diagnosing Main Power Supply, Ground Check & Tripmeter (1 of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Diagnosing Main Power Supply, Ground Check & Tripmeter (2 of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Diagnosing Transmission Malfunction (1 of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 6: Diagnosing Door Open (2 of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 7: Diagnosing Low Washer (3 of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 8: Diagnosing Low Fuel Warning Display (4 of 4)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 9: Diagnosing Headlamp Warning Display (1 of 3)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 10: Diagnosing Stop Lamp Warning Display (2 of 3)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 11: Diagnosing Tail Lamp Warning Display (3 of 3)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 12: Diagnosing Tail/Stop Lamp Warning Display (1 of 3)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 13: Diagnosing Low Battery Charge Warning Display (2 of 3)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 14: Diagnosing Brake Pads Worn Warning Display (3 of 3)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 15: Rear View of Combination Meter
Courtesy of NISSAN MOTOR CO., U.S.A.
If battery voltage is NOT present, check for blown fuse or fusible link. Check harness continuity between battery terminal and combination meter. Check ignition relay and/or ignition switch for malfunction.
Turn ignition switch on. Connect a jumper wire with a 3.4 watt light bulb between fuel gauge terminal "B" and ground for less than 10 seconds. Ensure fuel gauge moves smoothly from EMPTY to FULL.
If fuel gauge does not move smoothly from EMPTY to FULL, replace fuel gauge. If fuel gauge moves smoothly from EMPTY to FULL, check wire harness continuity between terminal No. 28 and ground.
If continuity does NOT exist, repair or replace wire harness between combination meter and fuel gauge unit. If continuity exists, test fuel gauge sending unit. See FUEL GAUGE SENDING UNIT.