Air Temperature Sensor ( Ambient / Intake ): Testing and Inspection

1. Disconnect the Air-flow Sensor connector.

MPI Relay Circuitry:

2. Connect an ohmmeter to terminals # 5 and # 6 of the sensor connector.
Refer to SPECIFICATIONS/ELECTRICAL.

Heating IAT Sensor:

3. While heating the temperature sensor with a hair dryer, measure the resistance.
As the temperature increases, the resistance should decrease. Refer to SPECIFICATIONS/ELECTRICAL.