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Home >> GMC >> 1999 >> Jimmy 2D Utility, 4WD, Standard >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> Diagnostic Tests >> DTC B2973: Door Key Switch Circuit Low >> Circuit Description
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Circuit Description

Body Control Module (BCM) monitors circuit No. 262 (Light Green wire) for content theft alarm. See WIRING DIAGRAMS  . BCM supplies output to door jamb switches. If BCM senses low voltage by turning key in door key switch, BCM disables content theft alarm.

Conditions for setting DTC: