The transmission temperature sensor is located in the joint assembly consisting of pressure control valves, solenoid valves and transmission control module, the electrohydraulic transmission control module.
The transmission temperature sensor is a thermistor where the output value changes according to the transmission-oil temperature. The sensor has negative temperature coefficient. With rising temperature, the resistance falls and with falling temperature the resistance increases. The transmission control module sends a reference signal to the sensor and measures the voltage drop in the circuit. At low transmission-oil temperature, the sensor resistance is high and the transmission control module picks up a high signal voltage. When the transmission-oil temperature rises, the resistance becomes lower and the signal voltage drops.
The transmission temperature sensor can not be replaced separately.
The following faults are treated in the test module: