Wiring diagram for 1990 Ford F-250 PCM and transmission solenoids

This is a wiring diagram for a 1990 Ford F-250's Powertrain Control Module (PCM) and transmission components. It details the connections and functions of the transmission fluid temperature sensor, torque converter clutch control solenoid, Electronic Pressure Control (EPC) solenoid, and shift solenoids.

AI caption December 2014 · Photo 63 of 343