Code 08 Or 09, Passenger Control Shorted Or Open
WARNING: This page is about a different car, the 1996 Oldsmobile Cutlass Supreme and 1996 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect passenger A/C-heater select switch. Turn ignition on. Set A/C-heater control to DUAL and AUTO modes. Measure voltage between passenger A/C-heater select switch connector terminal "A" (Dark Blue/White wire) and ground. If voltage is approximately 5 volts, go to step 3). If voltage is not approximately 5 volts, go to next step.
- If Code 08 is set, check Dark Blue/White wire for short to ground. If Code 09 is set, check Dark Blue/White wire for short to voltage. If circuit is okay, replace A/C-heater control.
- Measure voltage between A/C-heater switch connector terminal "A" (Dark Blue/White wire) and terminal "B" (Brown wire). If voltage is not approximately 5 volts, check for open Brown wire. If voltage is approximately 5 volts, check for poor connection at passenger A/C-heater select switch. If connector is okay, replace passenger A/C-heater select switch.