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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 90 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B3951 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Ground is applied by the turn signal switch. When the turn signal switch is placed in the turn right position, ground is applied to the body control module (BCM) through the right turn signal switch circuit. The BCM applies a pulsating voltage to the RF and RR turn signal lamps through the RF and RR turn signal lamp supply voltage circuits.

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