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 cranking and 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 causes the engine to be disabled, the IPC displays the corresponding message in the message center.

Refer to: PASSIVE ANTI-THEFT SYSTEM (PATS) - SYSTEM OPERATION AND COMPONENT DESCRIPTION .

Under normal operation, when the ignition is turned to START, the PCM receives the inputs:

Voltage signal on the crank detect circuit from the ignition switch.
PATS enable message from the BCM .
Correct transmission park or neutral input from the TCM .

When the PCM receives the correct inputs, voltage and ground is supplied to the starter relay coil. When the starter relay coil is energized, it provides voltage to the starter solenoid, allowing the starter motor to crank and start the engine.

The PCM disengages the starter once an engine Revolutions Per Minute (RPM) threshold is reached, a set crank time is exceeded or the ignition is turned OFF.