Description And Operation: Overview

The passive start system relies on the detection of a uniquely coded smart key through Low Frequency (LF) antennas strategically situated within the vehicle. The LF antennas make sure the smart key is always within the active transmission zone of the antennas. This allows the smart key to be detected inside the vehicle. For this reason the orientation and positioning of the antennas is critical to the correct functioning of the system. The smart key also operates the passive entry system.

For additional information, Refer to: HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS

For additional information, refer to: DESCRIPTION AND OPERATION .

The passive start system provides a secure interface between the Body Control Module/Gateway Module (BCM/GWM) and the Powertrain Control Module (PCM). This prevents unauthorized starting of the engine. Encoded data exchange between the smart key and multiple control modules immobilizes the engine crank system and the fuel system.

Engine starting is initiated when the encoded data exchange between the smart key and the control modules is verified. The engine management system then allows engine crank and fueling when an authorization data message is received from the BCM/GWM.

The engine can be started by pressing the ignition switch when PARK position is selected and the brake pedal is pressed.