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Cluster Display Does Not Dim With Lights On ("S" Series)

  1. Check for open or shorted parking light feed, bad parking light switch, and for an inoperative cluster. To do so, turn parking lights on and place ignition switch in "RUN" position.
  2. Using a digital volt/ohmmeter, measure voltage between ground and pin "A6" of large 34-pin connector. If reading is less than battery voltage, repair open or short in Brown wire. If reading is okay, go to next step.
  3. With parking lights on and ignition switch in "RUN" position, use digital volt/ohmmeter to measure voltage between ground and pin "A6" of large 17-pin connector. Adjust panel light dimmer switch from high intensity to low intensity.
  4. Voltmeter should read between zero (0) and battery voltage. If this reading is not obtained, repair Brown wire and/or parking light switch. If above steps are okay, replace inoperative instrument cluster.
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