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Circuit/System Verification

WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the scan tool Liftgate Secondary Obstacle Detection parameter is between 3 V-3.5 V.
    • If not between 3 V-3.5 V 

      Refer to Circuit/System Testing.

    • Go to next step: If between 3 V-3.5 V 
  3. Verify the scan tool Liftgate Secondary Obstacle Detection parameter is between 3 V-3.5 V and changes to 2.25-2.75 V as the B71R Liftgate Object Sensor - Right is pressed.
    • If not between 2.25-2.75 V or does not change 

      Test or replace the B71R Liftgate Object Sensor - Right.

    • Go to next step: If between 2.25-2.75 V and changes 
  4. Verify the scan tool Liftgate Secondary Obstacle Detection parameter is between 3 V-3.5 V and changes to 2.25-2.75 V as the B71L Liftgate Object Sensor - Left is pressed.
    • If not between 2.25-2.75 V or does not change 

      Test or replace the B71L Liftgate Object Sensor - Left.

    • Go to next step: If between 2.25-2.75 V and changes 
  5. All OK.
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