Description & Operation: Notes

Input signals from sensors are sent to the Powertrain Control Module (PCM). The PCM controls shift or converter clutch application. The PCM can also determine line pressure needed to optimize shift feel.

Five electronic solenoids accomplish the following functions:

• 3 On/Off solenoids for shifting.
• One Pulse-Width Modulator (PWM) solenoid for Torque Converter Clutch (TCC) control.
• One Electronic Pressure Control (EPC) solenoid for line pressure control.

PCM has built-in self-diagnosis, fail-safe code and warning code display for the main input sensors and solenoid valves.