Starting System

WARNING: This page is about a different variant/trim than selected.

This vehicle is equipped with a PATS that disables the engine from starting if an unprogrammed PATS key is used or an invalid PCM ID is received. The PATS is controlled by the BCM . If there is a PATS concern that disables the engine, the IPC displays the corresponding message in the message center.

Refer to: PERIMETER ANTI-THEFT ALARM - SYSTEM OPERATION AND COMPONENT DESCRIPTION .

Ignition modes are controlled by the BCM . For more information on push-button start

Refer to: STEERING WHEEL AND COLUMN ELECTRICAL COMPONENTS - OVERVIEW .

The ignition switch - push button start is connected to the BCM and the PCM in case of a failure. If there is a circuit failure to either module from the ignition switch - push button start, the modules communicate the ignition switch - push button start request to each other over the High Speed Controller Area Network (HS-CAN). During a start event, the ignition switch - push button start is pressed in combination with the brake pedal. The BCM and the PCM receive a request to start the engine. The PCM recognizes the correct inputs and provides voltage and ground to energize the starter relay coil and close the starter relay contacts. The starter relay contacts close, providing voltage to the starter solenoid, allowing the starter motor to crank the engine. The PCM disengages the starter motor once an engine Revolutions Per Minute (RPM) threshold is reached, a set crank time is exceeded or the ignition switch - push button start is pressed indicating an engine shutdown request.