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Fuel Gauge Scale Test

  1. With ignition switch in RUN position, enter self-diagnostics. See ENTERING IPC SELF-DIAGNOSTICS  under ON-VEHICLE DIAGNOSTICS. Select IPC INPUT II08, and operate gauge scale button.
  2. With gauge scale button released, display should indicate HI. With gauge scale button depressed, display should indicate LO. If display indicates LO with gauge scale button released, go to next step. If display indicates HI with gauge scale button depressed, go to step 4).
  3. Remove left switch assembly. If display indicates HI, replace left switch assembly. If display indicates LO, check Light Blue wire for a short to ground. If wire is okay, replace IPC. See INSTRUMENT PANEL CLUSTER (IPC)  under REMOVAL & INSTALLATION.
  4. Remove left switch assembly. Connect a fused jumper wire between left switch assembly connector terminals B12 (Light Blue wire) and B7 (Black wire). If display indicates LO, check connections. If connections are okay, replace left switch assembly.
  5. If display indicates HI, connect fused jumper wire between left switch assembly connector terminal B12 (Light Blue wire) and ground. If display indicates LO, check Black wire for an open circuit. If display indicates HI, remove IPC. See INSTRUMENT PANEL CLUSTER (IPC)  under REMOVAL & INSTALLATION.
  6. Connect an ohmmeter between IPC connector terminal D11 (Light Blue wire) and left switch assembly connector terminal D11 (Light Blue wire).
  7. If zero ohms are present, check terminal contact. If terminal contact is okay, replace IPC. See INSTRUMENT PANEL CLUSTER (IPC)  under REMOVAL & INSTALLATION. If high resistance is present, check Light Blue wire for an open circuit.
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