Climate Control Exhaust Gas Sensor: Testing and Inspection

A.Q.S (AIR QUALITY SENSOR)

INSPECTION
1. Ignition "ON"
2. Using the scan tool.

Specification:

3. Check the output voltage of AQS between terminals 2 and 3.
4. AQS diagnosis and fail safe
* AQS Sensing OPEN/SHORT : Sensing after IG ON.
* AQS Sensing FAIL (abnormal output) : Sensing after 40 sec IN ON.
* FAIL SAFE Function : AQS when AQS OPEN/SHORT and FAIL.

NOTE: When IG is turned ON, AQS heats for 35 ± 2 seconds, it will output below 2.5 ± 00.3 V voltage during this time.