Preliminary Information

The control module refers to the Powertrain Control Module (PCM). The control module is designed to maintain exhaust emission levels to Federal or California standards while providing excellent driveability and fuel efficiency. Review the components and wiring diagrams in order to determine which Systems are controlled by each specific control module. The control module monitors numerous engine and vehicle functions. The control module controls the following operations:
^ A/C clutch control
^ Automatic transmission shift functions
^ Cruise control enable
^ Evaporative Emission (EVAP) purge
^ Fuel control
^ Generator
^ Ignition Control (IC)
^ Knock Sensor (KS) system
^ Secondary Air Injection (AIR) system