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

Fig. 3 ECU connector terminal identification:

Fig. 4 Manifold air temperature sensor resistance value chart.:

1. Disconnect electrical connector from MAT sensor.
2. Using a suitable ohmmeter check MAT sensor resistance, Fig. 4.
3. If MAT sensor resistance is not within limits, replace sensor.
4. Using a suitable ohmmeter, check resistance between ECU electrical connector terminals D-3 and C-8 and sensor electrical connector terminals, Fig. 3. If resistance is greater than 1 ohm, repair wiring as necessary.