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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 25 (Bumpers And Fascias) >> Diagnostic Information and Procedures >> DTC P059F or P151E: Active Grille Air Shutter 1 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify DTC U0100 is not set.
    • If DTC U0100 is not set 
  3. Verify the active grille air shutter actuator opens and closes the louvers at the front bumper when performing the Active Grille Air Shutter System test with a scan tool.
    • If the louvers at the front bumper do not open and close and the test result is fail 

      Refer to Circuit/System Testing.

    • If the louvers at the front bumper open and close and the test result is pass 
  4. 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 
  5. All OK
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