Fuel Gauge & Wiring Harness Operational Test
- Disconnect fuel tank sending unit connector. Turn ignition switch to ON position. If fuel gauge indicates EMPTY, go to next step. If fuel gauge does not indicate EMPTY, repair short circuit in wiring harness. See WIRING DIAGRAMS .
- Connect a 12-volt, 3.4-watt test light between sending unit wiring harness connector terminals No. 2 and 3. See Fig 1. With ignition switch in ON position, test light should be on and gauge needle should move toward FULL. If test light is off and gauge needle does not move, check wiring harness for open circuit. Repair as necessary. If wiring harness is okay, perform FUEL GAUGE RESISTANCE test.
NOTE:
Tercel is not equipped with a low fuel warning light or low fuel warning light switch.