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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 B3930: Child Security Lock Motors >> 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 both interior rear door handles do not open the rear doors when commanding the Child Security Lock Motors ON with a scan tool.
    • If both interior door handles open the rear doors 

      Refer to Circuit/System Testing.

    • If both interior door handles do not open the rear doors 
  3. Verify both interior rear door handles will open the rear doors when commanding the Child Security Lock Motors OFF with a scan tool.
    • If both interior door handles do not open the rear doors 

      Refer to Circuit/System Testing.

    • If both interior door handles open the rear doors 
  4. All OK.
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