1994 Ford E4OD Transmission Wiring Diagram (Gasoline) - Solenoids, PCM Circuits

This document is page 30-2 of a Ford wiring diagram manual covering the E4OD automatic transmission with gasoline engines, marked "94" (1994) and "GASOLINE." It shows the complete electrical circuit for the E4OD transmission: power feeds from the engine compartment fuse box via two 20A fuses (one Hot in Start or Run through circuit 16 R/LG and 175 BK/Y, one Hot at All Times through circuit 37 Y), routing through the PCM Power Diode and PCM Power Relay, which directs 12V (relay energized) via circuits 361 R and 912 W/R to the transmission solenoids. The transmission connector includes the Transmission Oil Temperature Sensor (circuit 359 GY/R, ground 57 BK to G100 via splice S102), Coast Clutch Solenoid, #2 Shift Solenoid, Torque Converter Clutch Solenoid, #1 Shift Solenoid, and Electronic Pressure Control (EPC) Solenoid. Return circuits 923 O/BK, 924 BR/O, 315 P/O, 480 P/Y, 237 O/Y, and 925 W/Y run through connectors C103, C110, C1048, and C185 to the Powertrain Control Module (PCM). Explanatory callouts describe how the PCM uses the temperature sensor, how the TCC and coast clutch solenoids work, how the shift solenoids select gears 1-4, and that the EPC is a variable-force solenoid regulating line pressure. Cross-references point to power distribution (page 13-5), grounds (page 10-1), and PCM pages 23-2, 24-5, 25-2, 26-2.