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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1970 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> Liftgate Object Sensor Malfunction - DTC B153F >> Circuit/System Verification
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Circuit/System Verification

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  1. Ignition ON.
  2. Verify the scan tool Object Detection Sensor Status parameter is between 3V-3.5V.
    • If not between 3V-3.5V 

      Refer to Circuit/System Testing.

    • If between 3V-3.5V 
  3. Verify the scan tool Object Detection Sensor Status parameter is between 3V-3.5V and changes to 2.25-2.75V as the B71R liftgate object sensor-right is pressed.
    • If not between 2.25-2.75V or does not change 

      Test or replace the B71R liftgate object sensor-right.

    • If between 2.25-2.75V and changes 
  4. Verify the scan tool Object Detection Sensor Status parameter is between 3V-3.5V and changes to 2.25-2.75V as the B71L liftgate object sensor-left is pressed.
    • If not between 2.25-2.75V or does not change 

      Test or replace the B71L liftgate object sensor-left.

    • If between 2.25-2.75V and changes 
  5. All OK.
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