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. See Fig 1 -Fig 8 .
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: Fuel Gauge Test Connections ID (Eclipse & Galant 4WD)

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Fig 2: Fuel Gauge Test Connections ID (Eclipse & Galant FWD)

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Fig 3: Fuel Gauge Test Connections ID (Expo/Expo LRV, Summit Wagon & Colt Vista 4WD)

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Fig 4: Fuel Gauge Test Connections ID (Expo/Expo LRV, Summit Wagon & Colt Vista 4WD)

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Fig 5: Fuel Gauge Test Connections ID (Colt, Colt 200, Expo/Expo LRV FWD, Mirage, Montero, Summit, Summit Wagon & Colt Vista FWD)

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Fig 6: Fuel Gauge Test Connections ID (Diamante)

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Fig 7: Fuel Gauge Test Connections ID (Pickup & Ram-50)

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Fig 8: Fuel Gauge Test Connections ID (Stealth & 3000GT)

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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.