Transmission Fluid Temperature Sensor

Transmission fluid temperature sensor is a thermistor (temperature sensitive resistor) and is located in valve body. High sensor resistance produces high signal input voltage which corresponds to low fluid temperature. Low sensor resistance produces low signal input voltage which corresponds to high fluid temperature. PCM uses transmission fluid temperature sensor signal to determine TCC apply and release schedules, hot mode determination and shift quality. Failure in transmission fluid temperature sensor circuit should set a related diagnostic trouble code.