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Home >> Pontiac >> 2002 >> Aztek FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting Systems >> Diagnostic Information and Procedures >> DTC B2577: Short To Ground Or Open In Control Circuit Of Headlamp Relay Coil Or Low Beam Headlamp Relay >> Circuit Description

Circuit Description

The body control module (BCM) controls the headlamp relay by grounding the control circuit of the headlamp.

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