Preliminary Information

The Powertrain Control Module (PCM) is designed to maintain exhaust emission levels while maintaining excellent driveability and fuel efficiency. The PCM controls the following operations:
^ The fuel control
^ The Ignition Control (IC)
^ The Knock Sensor (KS) system
^ The automatic transmission shift functions
^ cruise control enable, if so equipped
^ The generator
^ The evaporative emissions (EVAP) purge
^ The A/C clutch control, if so equipped
^ The Secondary Air Injection (AIR), if so equipped
^ The Exhaust Gas Recirculation (EGR)