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Home >> Pontiac >> 2003 >> Aztek FWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting Systems >> Diagnostic Information & Procedures >> DTC B2665: Short To Ground In The Headlamps Signal Circuit >> Circuit Description

Circuit Description

The headlamp switch provides a direct ground input into the body control module (BCM) for the headlamp switch input when the switch is activated. This input is used by the BCM in order to control the headlamps when the headlamp switch is in the HEAD position.

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