Powertrain Control Module (PCM)

Passive anti-theft system uses PCM to enable or disable vehicle's engine. Within one second after engine start, PCM must receive an enable signal or the engine will be disabled.

When system is functioning properly and ignition switch is turned to RUN or START position, THEFT indicator light will turn on for 2 seconds, then turn off. Vehicle will be enabled to start and run.

If THEFT indicator light is on solid for 2 seconds then flashes for one minute, followed by Diagnostic Trouble Code (DTC) No. 16 flashing ten times, key code has been received and vehicle has been enabled or disabled but there is no PCM verification. If vehicle starts, PCM is not communicating with PATS module. If vehicle does not start, Multiplex Communications Network (MCN) may be faulty. Go to TROUBLE SHOOTING  .

If THEFT indicator flashes for one minute, no key code was received. This is due to a damaged key, a non-encoded key, faulty wiring or PATS module fault.

If THEFT indicator flashes for 15 minutes. Key code received/vehicle has been disabled due to key not being programmed. See KEY INITIALIZATION  in SERVICE PROCEDURES.