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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 >> DTC B3140, B3145, B3150, or B3155: Doors Lock/Unlock Switch >> 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 scan tool Driver Door Lock Switch parameter changes from Inactive to Lock and Unlock when pressing the S13D Door Lock Switch-Driver.
    • If the parameter does not change 

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

    • If the parameter changes 
  3. Verify the scan tool Passenger Door Lock Switch parameter changes from Inactive to Lock and Unlock when pressing the S13P Door Lock Switch-Passenger.
    • If the parameter does not change 

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

    • If the parameter changes 
  4. All OK.
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