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Home >> Jeep >> 2017 >> Compass Trailhawk >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Vehicle Theft Security (Service Information) - Mp >> Description And Operation >> Description And Operation >> Sentry Key Immobilizer System >> Powertrain Control Module

Powertrain Control Module

The PCM will enable or disable engine operation based upon the status of the SKIS messages. It is important to note that the default condition in the PCM is an invalid key; therefore, if no message is received from the SKIS by the PCM, the engine will not start.