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Circuit Test

WARNING: This page is about a different car, the 1991 Mitsubishi Pickup, 1991 Mitsubishi Montero, and 1991 Dodge Ram 50. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect temperature sender wire from sending unit. Connect a 12-volt, 3.4-watt test bulb between connector terminal and ground. Turn ignition switch to ON position. If test bulb flashes and temperature gauge needle moves, go to SENSOR RESISTANCE TEST. If test light does not flash and gauge needle does not move, repair wiring to sending unit.

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