Optima V6-2.7L VIN 4 (2007)
Climate Control Exhaust Gas Sensor: Testing and Inspection
INSPECTION
1. Ignition "ON"
2. Using the scan tool.
3. Check the output voltage of AQS between terminals 2 and 3.
Specification :
4. AQS diagnosis and fail safe
Detect the open of signal for 7 seconds without choosing the AQS switch when IG on.
If 2.5V or more is detected for 3.5 seconds or more among 7 seconds, be judged the open of AQS signal.
Operate as below fail safe function, while choosing AQS.
Fail safe: Release the AQS (AQS cannot be selected), Fresh/recirculation maintains previous situation of AQS selection.
NOTE:
When IG is turned ON, AQS heats for 34±5 seconds, it will output below 1.0 voltage during this time.
