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Coolant Temp, Door/Trunk Ajar, Or PERF Shift Indicator Malfunctioning

  1. If instrument cluster diagnostic system check was performed, go to next step. If instrument cluster diagnostic system check was not performed, go to INSTRUMENT CLUSTER DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS.
  2. Connect scan tool. Using scan tool, check for instrument cluster DTCs. If no DTCs exist, go to next step. If any DTCs exist, go to SELF-DIAGNOSTIC SYSTEM  .
  3. Turn ignition switch to RUN position. Using scan tool, command faulty indicator to turn on. If indicator illuminates, go to next step. If indicator does not illuminate, go to step  5 .
  4. Ensure ignition switch is in RUN position. Using scan tool, command faulty indicator to turn off. If indicator illuminates, go to next step. If indicator does not illuminate, locate and repair problem in Body Control Module (BCM) system. See appropriate BODY CONTROL MODULES article.
  5. Replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Recheck system operation.
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