Powertrain

The powertrain used in this vehicle consists of a twin cam V6 engine mated to a 4T65-E electronically controlled transaxle. The powertrain has electronic controls to reduce exhaust emissions while maintaining excellent driveability and fuel economy. The Powertrain Control Module (PCM) is the heart of this control system.

The PCM is designed to maintain exhaust emission levels to Federal or California standards while providing excellent driveability and fuel efficiency. Review the components and the wiring diagrams in order to determine which systems are controlled by the PCM. The PCM monitors numerous engine and vehicle functions. The following are some of the functions that the PCM controls:
^ The engine fueling
^ The Ignition Control (IC)
^ The Knock Sensor (KS) System
^ The Evaporative Emissions (EVAP) System
^ The Secondary Air Injection (AIR) System, if equipped
^ The Exhaust Gas Recirculation (EGR) System
^ The automatic transmission functions
^ The generator
^ The A/C clutch control
^ The cooling fan control