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Baumann TCS E4OD Transmission Controller Wiring Diagram - Ford Pinout

Baumann TCS controller wiring schematic for a Ford automatic: pin-by-pin connections to shift/coast/converter clutch and EPC solenoids, TFT, VSS, TPS and 10A fuse with Ford wire colors.

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This document is a wiring diagram for the Baumann TCS (Transmission Control System), an aftermarket standalone controller used with Ford E4OD automatic transmissions. It shows all 25-pin connector assignments of the Baumann TCS unit with pin numbers, signal names, and wire colors, including shift solenoids SS1/SS2, coast clutch (CCS), torque converter clutch (TCC), electronic pressure control (EPC), transmission fluid temperature sensor (TFT), vehicle speed sensor inputs (VSS+/VSS-), transmission range sensor (TRS), throttle position sensor (TPS), and VRef. The diagram details the transmission solenoid pack connector and its six components (coast clutch solenoid, shift solenoids 1 and 2, converter clutch solenoid, EPC solenoid, TFT sensor), plus connections to the vehicle speed sensor, range sensor, neutral safety switch, and backup lamp switch. It gives alternative hookups for EEC-IV applications (specific EEC pins 26, 40/47, 56, 57/60, 37) versus non-EEC installations using a standalone T.P. sensor and clean chassis ground. Power provisions include a 10-ampere fuse, 12V-in-run sources, O/D switch and indicator, table select, and ManuTronic speed-control switch input. A footnote instructs connecting VSS inputs to speedometer outputs on 1992-and-later trucks with rear ABS and electronic speedometers, and it warns to isolate the electrically noisy solenoid ground from the main ground.

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Frequently asked questions

What fuse rating does the Baumann TCS wiring diagram specify for power?
A 10 ampere fuse, feeding Pin 37 or 57 for EEC-IV applications or a switched power source for non-EEC applications.
Which solenoids are in the E4OD transmission solenoid pack?
Coast Clutch Solenoid, Shift Solenoid 1, Shift Solenoid 2, Converter Clutch Solenoid, EPC Solenoid, and the TFT Sensor.
How should VSS inputs be connected on 1992 and later trucks?
The note says to connect VSS inputs to the speedometer outputs on 1992 and later trucks with Rear ABS and electronic speedometer.
Why does the diagram show two separate grounds?
The solenoid ground (pins 12 and 24) is electrically noisy and must be isolated from the main ground (pin 17), with a separate clean chassis ground for non-EEC T.P. sensor installations.
What wire colors are used for the TCC and EPC signals?
TCC (pin 9) is Pu/Y and EPC (pin 25) is W/Y.

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