Air Temperature Sensor ( Ambient / Intake ): Testing and Inspection
INTAKE AIR TEMPERATURE SENSOR CHECK1. Disconnect the volume air flow sensor connectors.
2. Measure resistance between terminals 5 and 6.
Standard value:
13 - 17 kohm [at -20°C (-4°F)]
5.3 - 6.7 kohm [at 0°C (32°F)]
2.3 - 3.0 kohm [at 20°C (68°F)]
1.0 - 1.5 kohm [at 40°C (104°F)]
0.56 - 0.76 kohm [at 60°C (140°F)]
0.30 - 0.42 kohm [at 80°C (176°F)]
3. If not within specifications, replace the volume air flow sensor.
Normal Condition:
4. Measure resistance while heating the sensor using a hair dryer.
5. If resistance does not decrease as heat increases, replace the volume air flow sensor assembly.