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Home >> Hummer >> 2007 >> H3 Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2575 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2005 GMC Canyon and 2005 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.

When the body control module (BCM) senses a request for headlamp or daytime running lamp (DRL) illumination, the BCM sends a ground signal to the low beam relay through the low beam headlamp relay control circuit. The low beam headlamp relay will illuminate the low beam headlamps.

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