Bonneville V6-231 3.8L VIN 3 SFI (1988)
Manifold Air Temperature (MAT) Sensor: Description and Operation
10 C The MAT sensor is a thermistor mounted in the intake manifold. Low intake air temperature produces a high resistance, while high intake air
resistance produces low resistance. The ECM supplies a 5 volt signal to the sensor through a resistor and measures the voltage. By measuring the
voltage, the ECM can determine MAT.
