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Diagnostic Trouble Code: B0012
Diagnostic Trouble Code Name: Driver Frontal Deployment Loop Stage 1
Vehicle Make: Chevrolet
Vehicle Model: Lumina (VE)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Electric Rear Defrost Circuit
Possible Sensor Faults
HVAC Control Module
Possible Related Diagnostic Trouble Codes
DTC B0283
Circuit / System Description
When the HVAC control module receives a rear window defog request from the radio/HVAC control, the HVAC control module will supply voltage to the relay coil. Battery positive voltage is supplied at all times to the relay switched input and the relay coil is always grounded. This allows current from the relay switched input to flow through the switch contacts and out the relay switched output to the rear window defogger grid.
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