Circuit/System Description

Ground is always fed to the direction indicator/multifunction stalk. The turn signal lamps may only be activated with the ignition switch in the ON or START position. When the turn signal/multifunction switch is placed in either the TURN RIGHT or TURN LEFT position, ground is applied to the body control module (BCM) through either the right turn or left turn signal switch signal circuit. The BCM then applies a pulsating voltage to the front and rear turn signal lamps through their respective voltage supply circuits. When a direction indicator request is received by BCM, a message is sent via serial data to the instrument cluster with a request for the relevant indicator lamp of the direction indicator to flash ON and OFF.