Powertrain Control Module
The PCM controls transmission operation through 4 electronic solenoids consisting of 3 on/off solenoids for shifting and torque converter clutch control, and one variable force solenoid for electronic line pressure control. The PCM has built-in self-diagnostic capabilities, fail-safe code and warning code display for the main input sensors and solenoid valves. For PCM locations, see POWERTRAIN CONTROL MODULE LOCATIONS table under REMOVAL & INSTALLATION.