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Home >> Saturn >> 2003 >> Ion 1 Standard >> Repair and Diagnosis (Single Page) >> Electrical >> Motors, Switches, Relays >> Battery >> Diagnostic Information and Procedures >> DTC B1327: Device Power 1 Circuit Low >> Circuit Description

Circuit Description

The body control module (BCM) has an internal voltage sensor with a dedicated circuit that checks the battery positive voltage and battery negative circuit voltage to determine if it is above 8.7 volts.