General Information

Powertrain Control Module (PCM)


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:
^ Fuel control
^ Ignition Control (IC)
^ Knock Sensor (KS) system
^ Automatic transmission shift functions
^ Manual transmission: 1-4 Upshift and Reverse Inhibit
^ Cruise Control Enable (if so equipped)
^ Generator
^ Evaporative Emission ([1][2]EVAP) Purge
^ A/C Clutch Control
^ Cooling Fan Control
^ Secondary Air Injection (AIR)
^ Exhaust Gas Recirculation (EGR)
^ On-board diagnostics for powertrain functions.