Circuit/System Verification
- Ignition On/Vehicle in Service Mode.
- Verify DTC U1510 is not set.
- If DTC U1510 is set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- If DTC U1510 is not set
- If DTC U1510 is set
- Verify the active grille air shutter position parameter changes from 0% (fully closed) to 100% (fully open) when using the scan tool ECM Active Grille Air Shutter Position control function.
- If the louvers at the front bumper do not open and close
Refer to Circuit/System Testing.
- If the louvers at the front bumper open and close
- If the louvers at the front bumper do not open and close
- Verify none of the following conditions are present:
- Snow or ice packed in the front fascia which prevents the louvers from moving.
- Debris or foreign objects which prevent the louvers from moving.
- If any of the conditions are present
Clear any snow, ice or foreign objects from the front grille.
- If none of the conditions are present
- All OK