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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 29 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> Door Lock Indicator Malfunction >> 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 the driver and passenger doors LOCK and UNLOCK when commanding the All Doors Lock/Unlock with a scan tool.
    • If the driver and passenger doors LOCK and UNLOCK 
  3. Verify the scan tool Driver Door Ajar Switch and Passenger Door Ajar Switch parameter changes between Inactive and Active when opening and closing the passenger and driver doors
    • If the parameters change 
  4. Verify the driver and passenger door lock indicators turn ON and OFF when commanding the All Doors Lock/Unlock with a scan tool.
    • If the driver door lock indicator is always ON or always OFF 

      Refer to Circuit/System Testing - Driver Door Lock Indicator Malfunction.

    • If the passenger door lock indicator is always ON or always OFF 

      Refer to Circuit/System Testing - Passenger Door Lock Indicator Malfunction.

    • If the driver and passenger door lock indicators are always OFF 

      Refer to Circuit/System Testing - Both Door Lock Indicators Inoperative.

    • If the driver and passenger door lock indicators turn ON and OFF 
  5. All OK.