Dakota 4WD V6-3.9L VIN X (1997)
Transmission Control System Relay: Description and Operation
CIRCUIT OPERATION
Four Speed Automatic Transmission
The electronic transmission relay powers the overdrive solenoid, torque convertor clutch solenoid, and governor pressure solenoid. All three
solenoids are molded together.
Power for the coil side of the relay is supplied on circuit T4. This circuit is controlled by the Powertrain Control Module (PCM), and is the feed
for the generator. Ground for the coil side of the relay is controlled by the PCM on circuit T3. This circuit connects to cavity E30 of the PCM
connector.
When the PCM grounds the relay, the relay contacts connect circuit A14 to circuit T8. Circuit T8 powers the solenoids.
