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Fuel Gauge Always Reads Full Test

  1. Disconnect fuel gauge sender connector. Connect a jumper wire between Purple wire of harness connector and ground. Turn ignition switch to RUN position. Observe fuel gauge.
  2. If gauge indicates full, check Purple wire between fuel gauge sender and ground for open, and repair as necessary. If wire is okay, replace IPC. See INSTRUMENT PANEL CLUSTER (IPC) R & I  under REMOVAL & INSTALLATION. If gauge indicates empty, connect a fused jumper wire between Purple wire and applicable Black/White, Black/Yellow or Black wire of fuel tank unit connector. Check fuel gauge.
  3. If gauge indicates full, check Black/White, Black/Yellow or Black wire for open. Repair as necessary. If gauge indicates empty, replace fuel gauge sender.
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