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Cluster & Panel Illumination Problems

  1. Connect scan tool to Data Link Connector (DLC). Turn ignition on. Using scan tool, attempt to communicate with Mechanical Instrument Cluster (MIC). If communication was established, go to next step. If communication was not established, repair communication concern. See MIC MESSAGE NOT RECEIVED  under COMMUNICATIONS.
  2. Turn ignition on. Observe dimming level voltage on scan tool while rotating dimming level switch from low to high positions. If voltage changes from .2 to 3.0 volts on scan tool, go to next step. If voltage does not change from .2 to 3.0 volts on scan tool, repair dimming level switch failure. See DIMMING LEVEL SWITCH FAILURE  .
  3. Turn parking lights on. Rotate dimming level switch from low to high positions while observing instrument panel lights. If instrument panel lights are always on high, go to next step. If instrument panel lights are not always on high, go to step  12 .
  4. Disconnect ashtray light harness connector. Rotate dimming level switch from low to high positions while observing instrument panel lights. If instrument panel lights do not operate properly, go to next step. If instrument panel light operate properly, repair or replace ashtray light for short to voltage.
  5. Disconnect clock light harness connector. Rotate dimming level switch from low to high positions while observing instrument panel lights. If instrument panel lights do not operate properly, go to next step. If instrument panel light operate properly, repair or replace clock light for short to voltage.
  6. Disconnect PRND3L light harness connector. Rotate dimming level switch from low to high positions while observing instrument panel lights. If instrument panel lights do not operate properly, go to next step. If instrument panel light operate properly, repair or replace PRND3L light for short to voltage.
  7. Disconnect radio harness connector C2. Rotate dimming level switch from low to high positions while observing instrument panel lights. If instrument panel lights do not operate properly, go to next step. If instrument panel light operate properly, repair or replace radio for short to voltage.
  8. Disconnect traction control switch harness connector. Rotate dimming level switch from low to high positions while observing instrument panel lights. If instrument panel lights do not operate properly, go to next step. If instrument panel light operate properly, repair or replace traction control switch for short to voltage.
  9. Turn ignition off. Disconnect headlight switch harness connector. Turn ignition on. Measure voltage at terminal No. 9 (Orange wire) at headlight switch harness connector. If battery voltage exists, go to next step. If battery voltage does not exist, replace headlight switch.
  10. Turn ignition off. Connect headlight switch harness connector. Turn ignition on. Disconnect temperature control head harness connector. Rotate dimming level switch from low to high positions while observing instrument panel lights. If instrument panel lights do not operate properly, go to next step. If instrument panel light operate properly, repair or replace temperature control head for short to voltage.
  11. Turn ignition off. Disconnect instrument cluster harness connector C1. Turn ignition on. Measure voltage at terminal No. 4 (Orange wire) at instrument cluster harness connector C1. See Figure . If battery voltage exists, repair short to voltage in Orange wire. If battery voltage does not exist, replace instrument cluster.
  12. Turn ignition on. Using scan tool, retrieve DTCs. If PANEL LAMPS DRIVER OUTPUT CIRCUIT SHORTED is retrieved, go to next step. If PANEL LAMPS DRIVER OUTPUT CIRCUIT SHORTED is not retrieved, replace instrument cluster.
  13. Turn ignition off. Disconnect instrument cluster harness connector C1. Measure resistance between ground and terminal No. 4 (Orange wire) at instrument cluster harness connector C1. See Figure . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, replace instrument cluster.
  14. Disconnect ashtray light harness connector. Measure resistance between ground and terminal No. 4 (Orange wire) at instrument cluster harness connector C1. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair or replace ashtray light for short to ground.
  15. Disconnect clock harness connector. Measure resistance between ground and terminal No. 4 (Orange wire) at instrument cluster harness connector C1. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair or replace clock for short to ground.
  16. Disconnect headlight switch harness connector. Measure resistance between ground and terminal No. 4 (Orange wire) at instrument cluster harness connector C1. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair or replace headlight switch for short to ground.
  17. Disconnect PRND3L light harness connector. Measure resistance between ground and terminal No. 4 (Orange wire) at instrument cluster harness connector C1. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair or replace PRND3L light for short to ground.
  18. Disconnect radio harness connector C2. Measure resistance between ground and terminal No. 4 (Orange wire) at instrument cluster harness connector C1. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair or replace radio for short to ground.
  19. Disconnect traction control switch harness connector. Measure resistance between ground and terminal No. 4 (Orange wire) at instrument cluster harness connector C1. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair or replace traction control switch for short to ground.
  20. Disconnect temperature control head harness connector. Measure resistance between ground and terminal No. 4 (Orange wire) at instrument cluster harness connector C1. If resistance is 5 ohms or less, repair short to ground in Orange wire. If resistance is greater than 5 ohms, repair or replace temperature control head for short to ground.
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