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

INTAKE AIR TEMPERATURE SENSOR CHECK




1. Disconnect the volume air flow sensor connectors.
2. Measure resistance between terminals 5 and 6.

Standard value:
5.3 - 6.7 kOhms [at 0 °C (32 °F)]
2.3 - 3.0 kOhms [at 20 °C (68 °F)]
1.0 - 1.5 kOhms [at 40 °C (104 °F)]
0.30 - 0.42 kOhms [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.

NOTE: To inspect the sensor, refer to Powertrain Management / Computers and Control Systems / Testing / Trouble Code Descriptions / Diagnostic Trouble Code Chart.