Jetta L4-1781cc 1.8L SOHC (RV, PF) (1989)
Intake Air Temperature Sensor: Description and Operation
Intake Air Temperature Sensor
The intake air temperature sensor, which is located in the air flow sensor, is a negative temperature coefficient (NTC) resistor. This means that as the
temperature of the sensor increases, its resistance value decreases. The signal it supplies to the control unit is used to modify the air/fuel ratio depending
on the temperature of the incoming air