Tracer L4-110 1.8L DOHC (1995)
Intake Air Temperature Sensor: Description and Operation
Intake Air Temperature Sensor Location
PURPOSE
To provide the Powertrain Control Module (PCM) with a varying voltage signal (input) that corresponds to changes in intake air temperature. The
input signal is used by the PCM in calculations for air/fuel ratio, fuel pressure, purge control, and idle speed.
OPERATION
The sensor is a negative temperature coefficient thermistor. As temperature increases, resistance decreases. Cold air is more dense than warm air.