Celica, Cressida, Land Cruiser, 86 1/2 Supra & Van
- Unplug connector from sending unit. Connect a 3.4 watt bulb in-line with sending unit lead and ground. Turn ignition switch on. Bulb should start flashing and gauge pointer should deflect.
- On Land Cruiser only, resistance between gauge terminals should be about 55 ohms. On Celica, 86 1/2 Supra and Van resistance between gauge terminals should be about 42 ohms. On all models, replace gauge if defective.
- To check sending unit, unplug connector from sending unit. Connect 12 volt source to sending unit in series with a 3.4 watt bulb. Bulb should not light with engine is stopped, and flash with engine running. Number of flashes should vary with engine speed.