Simple Test

Disconnect fuel gauge sending unit connector wire in luggage compartment, in cargo space or at tank unit. Connect a 12-volt, 3.4-watt bulb to harness side of connector, between appropriate terminals. SeeFig 1 - Fig 3 .
Turn ignition switch to ON position. Ensure test bulb flashes, or stays on, and fuel gauge needle moves. If bulb or gauge needle does not function as described, check and repair fuel gauge circuit.

Fig 1: Identifying Fuel Gauge Test Connections (FWD)

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Fig 2: Identifying Fuel Gauge Test Connections (4WD - Main)

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Fig 3: Identifying Fuel Gauge Test Connections (4WD - Sub)

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NOTE: Fuel gauge resistance test must be completed with instrument panel cluster removed. Use ohmmeter for all measurements. If resistance is extremely low, a short may exist in coil. If resistance is extremely high, a broken wire or similar problem may exist in gauge.