Component Testing
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
Multifunction Intake Air Sensor
- Test the Intake Air Humidity Sensor by varying the air humidity in the intake duct near the sensor, while observing the scan tool Intake Air Humidity Sensor parameter.
- Verify the parameter is between 5-95% and changes
- If not within 5-95%, or the parameter does not change.
Replace the K20 Engine Control Module.
- If within 5-95% and the parameter does change
- If not within 5-95%, or the parameter does not change.
- All OK.