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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 333 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B396C or B396D: Liftgate Interior Release Open/Close Switch Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition On/Vehicle In Service Mode
  2. Verify the scan tool parameter: Liftgate Front Control Switch = Inactive
    • If not the specified state 

      Refer to: Circuit/System Testing - Test 1

    • If the specified state 
  3. Operate the component: S45B Liftgate Control Switch - Interior Pressed

    Verify the scan tool parameter: Liftgate Front Control Switch = Active

    • If not the specified state 

      Refer to: Circuit/System Testing - Test 1

    • If the specified state 
  4. Operate the component: S45B Liftgate Control Switch - Interior Select each position: Off / 3/4 / Max

    Verify the scan tool parameter: Liftgate Mode Switch = Off & 3/4 & Maximum

    • If the parameter value does not change 

      Refer to: Circuit/System Testing - Test 2

    • If the parameter value changes 
  5. All OK.
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