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Speedometer Gauge &/Or Odometer Inoperative Or Inaccurate

  1. If instrument panel cluster diagnostic check was performed, go to next step. If instrument panel cluster diagnostic check was not performed, go to INSTRUMENT PANEL CLUSTER DIAGNOSTIC SYSTEM CHECK .
  2. Connect scan tool to DLC. Raise vehicle sufficiently for drive wheels to rotate. Start engine and place gear selector in DRIVE. Using scan tool, monitor VSS parameter in PCM ENGINE DATA 1 data list. If VSS parameter and speedometer display agree, go to next step. If VSS parameter and speedometer display do not agree, go to step  4.
  3. Road test vehicle to check speedometer/odometer operation. If system operates normally, problem is intermittent. Check for poor connections or damaged wires. See WIRING DIAGRAMS . Repair or replace if necessary. If speedometer/odometer do not operate normally, go to next step.
  4. Replace IPC. See INSTRUMENT PANEL CLUSTER (IPC)  under REMOVAL & INSTALLATION then go to next step.
  5. Road test vehicle to check speedometer/odometer operation. If system operates normally, repair is complete. If problem still exists, return to step  2.
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