Rear Wiper Mux Circuit Error

Name of Code:
Rear Wiper MUX Circuit Error

When Monitored:
With the ignition in the run or accessory position and battery voltage above 10 volts.

Set Condition:
When the rear wiper MUX circuit senses a voltage above 5.0 volts.

Theory of Operation:
The BCM interfaces with the climate control module (CCM) to perform the rear wiper function. The CCM, based upon which rear wiper function is selected, will send the BCM a varying voltage level. The voltage level will determine the wiper function to be performed. That level will be below 5.0 volts.

Possible Causes:
- Circuit shorted to battery
- Open CCM ground circuit