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

CIRCUIT DIAGRAM





INSPECTION USING SCAN TOOL




HARNESS INSPECTION PROCEDURE

COMPONENT TEST PROCEDURE
1. Disconnect the volume air flow sensor connectors.





2. Measure resistance between terminals 4 and 6.

Resistance at Temperature
6.0 K ohms at 0°C (32°F)
2.7 K ohms at 20°C (68°F)
0.4 K ohms at 80°C (176°F)





3. Measure resistance while heating the sensor using a hair drier.

As the temperature gets higher the resistance should decrease

4. If the value deviates from the standard value or the resistance remains unchanged, replace the volume air flow sensor assembly.

TROUBLESHOOTING HINTS
The intake air temperature sensor senses the intake air temperature in the air cleaner to indicate a temperature different from outside temperature.