Circuit Description
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Ground is applied to 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 voltage supply circuits.