Theft Deterrent Relay

The theft deterrent relay is controlled by the Powertrain Control Module via the starter enable output CKT 447 (YEL). If the IPC measures the correct key pellet resistance value, the IPC sends a message on the class 2 serial data line to the Powertrain Control Module to ground the theft deterrent relay. The relay is energized, if the ignition switch is in the start position and the gear selector is in park or neutral position.