Dakota 2WD V6-239 3.9L Magnum (1996)
Transmission Control System Relay: Description and Operation
CIRCUIT OPERATION
The electronic transmission relay powers the overdrive solenoid, torque convertor clutch solenoid, and variable force solenoid. All three solenoids
are molded together.
When the ignition switch is in the START or RUN positions, it connects circuit A1 from fuse C in the Power Distribution Center (PDC) to circuit
A21. Circuit A21 powers the coil side of the electronic transmission relay. The Powertrain Control Module (PCM) provides ground for the relay
on circuit T30. Circuit T30 connects to circuit C27. Circuit C27 connects to the coil side of the relay. Circuit T30 connects to cavity B30 of the
PCM.
When the PCM grounds the relay, the relay contacts connect circuit C26 from fuse B in the PDC to circuit C25. Circuit C25 connects to circuit
T20. Circuit T20 powers the solenoids.
