3.
Check the output voltage of AQS between terminals 2 and 3.
Specification
Condition | Output signal | Fresh/recirculation |
Normal condition | 4 ~ 5V | Fresh |
Hazardous gas detection | 0 ~ 1V | Recirculation |
Ignition "ON"
Using the scan tool.
Check the output voltage of AQS between terminals 2 and 3.
Condition | Output signal | Fresh/recirculation |
Normal condition | 4 ~ 5V | Fresh |
Hazardous gas detection | 0 ~ 1V | Recirculation |
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.
When IG is turned ON, AQS heats for 34±5 seconds, it will output below 1.0 voltage during this time.
Disconnect the negative (-) battery terminal.
Remove the front bumper.
(Refer to BD group - "Front Bumper")
Remove the AQS (A) after loosening the mounting screws.
Installation is the reverse order of removal.
