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Home >> Pontiac >> 2003 >> Aztek AWD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Charging System >> Diagnostic Tests >> DTC B1327: Device Power Circuit Low >> Circuit Description

Circuit Description

The BCM monitors the battery positive voltage and battery negative circuit voltage to determine if it is between 9.0-15.0 volts and sends this information out as a class 2 message to the VTD.