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Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B153F - Liftgate Object Sensor Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. Verify the scan tool parameter: Liftgate Secondary Object Detection = Greater than 3 VorLess than 3.5 V
    • If not between 3 and 3.5 V 

      Refer to: Circuit/System Testing

    • Go to next step: If between 3 and 3.5 V 
  3. Operate the component: B71R Liftgate Object Sensor - Right - Pressed

    Verify the scan tool parameter: Liftgate Secondary Object Detection = Greater than 2.25 VorLess than 2.75 V

    • If not between 2.25 and 2.75 V 

      Refer to: Circuit/System Testing

    • Go to next step: If between 2.25 and 3.75 V 
  4. Operate the component: B71L Liftgate Object Sensor - Left - Pressed

    Verify the scan tool parameter: Liftgate Secondary Object Detection = Greater than 2.25 VorLess than 2.75 V

    • If not between 2.25 and 2.75 V 

      Refer to: Circuit/System Testing

    • Go to next step: If between 2.25 and 3.75 V 
  5. All OK.
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