Transmission Temperature Sensor/Switch: Description and Operation

CIRCUIT OPERATION
The transmission temperature sensor is located in the transmission solenoid assembly The Powertrain Control Module (PCM) supplies 5 Volts to the sensor on circuit K6. Circuit T54 from the sensor connects to cavity B1 of the PCM and provides the transmission temperature input. The PCM provides ground for the sensor on cavity K4.

If transmission temperature exceeds a calibrated temperature, the PCM sends a signal to the Vehicle Information Center (VIC) over the CCD bus. In response, the VIC displays a message to the driver.