Circuit Description
WARNING: This page is about a different car, the 2000 Isuzu Rodeo and 2000 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.
Intake Air Temperature (IAT) sensor is a thermistor, which varies resistance based on temperature. As temperature of sensor increases, resistance decreases. High temperature will result in a low signal voltage. DTC will set when PCM senses IAT sensor voltage is excessively low (shorted to ground).
Conditions required to set DTC are:
- Vehicle driven at 30 MPH or more.
- Engine running more than 2 minutes.
- IAT voltage is less than .10 volts for 12.5 seconds over a 25-second period.
- Listed conditions are present for at least 2 seconds.