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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 228 (Vehicle Access System - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Power Door Child Lock Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On/Vehicle - In Service Mode
  2. Engage the child door locks by pressing the child lock switch on the S79D Front Side Door Window Control Switch-Driver

    Verify the correct operation: Interior Door Handle @ Left Rear Door = Disabled

    • If the component does not work as specified 

      Refer to: Circuit/System Testing - Test 1

    • Go to next step: If the component works as specified 
  3. Disengage the child door locks by pressing the child lock switch on the S79D Front Side Door Window Control Switch-Driver

    Verify the correct operation: Interior Door Handle @ Left Rear Door = Enabled

    • If the component does not work as specified 

      Refer to: Circuit/System Testing - Test 1

    • Go to next step: If the component works as specified 
  4. Engage the child door locks by pressing the child lock switch on the S79D Front Side Door Window Control Switch-Driver

    Verify the correct operation: Interior Door Handle @ Right Rear Door = Disabled

    • If the component does not work as specified 

      Refer to: Circuit/System Testing - Test 2

    • Go to next step: If the component works as specified 
  5. Disengage the child door locks by pressing the child lock switch on the S79D Front Side Door Window Control Switch-Driver

    Verify the correct operation: Interior Door Handle @ Right Rear Door = Enabled

    • If the component does not work as specified 

      Refer to: Circuit/System Testing - Test 2

    • Go to next step: If the component works as specified 
  6. All OK.