The transmission oil temperature sensor is required to determine the oil pressures applied to the two cylinders flanged onto the manual transmission for gearshifts.
At very low transmission-oil temperature, very high shifting forces are required; at operating temperature, they are correspondingly low.
The transmission oil temperature sensor is an NTC sensor that reduces its resistance value with increasing temperature.
Depending on the resistance value, there is a proportional change in the voltage drop at the temperature sensor.