Oil Temperature Sensor
The temperature sensor is the NTC type. The temperature sensor is located on the transmission control system inside the side cover and measures the temperature of the transmission oil in the pan. The temperature sensor is an integrated part of the cable harness. The temperature sensor is supplied with 5 V and is grounded via the transmission control module (TCM). By measuring the voltage drop over the sensor's NTC resistor the control module can determine the temperature of the transmission oil. The transmission control module (TCM) uses the information on transmission oil temperature for:
- calculating transmission gearshift timing
- calculating engagement and disengagement of the lock-up function.
The transmission control module (TCM) stores the time for which the temperature has been within a certain temperature range and if a certain temperature and time has been exceeded, then a diagnostic trouble codes (DTC) is generated to indicated that an oil change is necessary.
The temperature sensor can be diagnosed.