Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Diagnostic Trouble Code Description:
Rear Defrost Request Switch Circuit
Possible Sensor Faults
Body Control Module
Possible Related Diagnostic Trouble Codes
DTC 021
Circuit / System Description
The BCM monitors the voltage level in the rear window defogger switch signal circuit. The voltage level should be near system voltage when the rear window defogger switch is open and the voltage will be less than 1V when the rear window defogger switch is closed.