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Test A: Engine Coolant Temperature Gauge Inaccurate Or Inoperative

  1. If instrument cluster diagnostic system check has been performed, go to next step. If instrument cluster diagnostic system check has not been performed, perform INSTRUMENT CLUSTER DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Connect scan tool to Data Link Connector (DLC). DLC is located below left side of instrument panel, near steering column. Turn ignition switch to RUN position. Using scan tool, observe Engine Coolant Temperature (ECT) sensor parameter in Powertrain Control Module (PCM) engine data 1 data list. If ECT sensor parameter does not display approximately same as instrument cluster display, go to next step. If ECT sensor parameter displays approximately same as instrument cluster display, inspect for intermittents. See TROUBLE SHOOTING  .
  3. Replace Instrument Panel Cluster (IPC). After repair, go to next step.
  4. Operate system to verify repair. If system is not operating correctly, repeat test beginning at step  2 .
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