Starting System
NOTE:
This vehicle is equipped with Passive Anti-Theft System (PATS) that disables the engine from cranking and starting if an unprogrammed Passive Anti-Theft System (PATS) key is used or an invalid Powertrain Control Module (PCM) ID is received. Passive Anti-Theft System (PATS) is controlled by the Body Control Module (BCM). If there is a Passive Anti-Theft System (PATS) concern that cause the engine to be disabled, the Instrument Panel Cluster (IPC) displays "STARTING SYSTEM FAULT" in the message center. For additional information on the Passive Anti-Theft System (PATS), REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) - WITHOUT INTELLIGENT ACCESS (IA)
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Under normal operation, when the ignition is turned to START, the Powertrain Control Module (PCM) receives the following inputs:
- Request to start the engine
- Passive Anti-Theft System (PATS) is enable message
- Correct transaxle PARK or Neutral input from the Transmission Range (TR) sensor
When the Powertrain Control Module (PCM) receives the correct inputs, voltage and ground is supplied to the starter relay coil. The starter relay coil is energized causing the relay contacts to close providing voltage to the starter solenoid, allowing the starter motor to crank and start the engine.
The Powertrain Control Module (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.