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Home >> Chevrolet >> 2012 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 153 (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

WARNING: This page is about a different car, the 2013 GMC Acadia, 2013 Chevrolet Traverse, and 2013 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, observe the scan tool Object Detection Sensor Status parameter. The reading should be between 3-3.5 V.
    • If not within the specified range, perform the Circuit/System Testing.
  2. Observe the scan tool Object Sensor Supply Voltage parameter while pressing and releasing the B71R liftgate object sensor - right. The reading should change from Inactive to Active as the sensor is pressed and released.
    • If the value does not change, test or replace the B71R liftgate object sensor - right.
  3. Observe the scan tool Object Sensor Supply Voltage parameter while pressing and releasing the B71L liftgate object sensor - left. The reading should change from Inactive to Active as the sensor is pressed and released.
    • If the value does not change, test or replace the B71L liftgate object sensor - left.
  4. Command the liftgate to power close by pressing the B70 liftgate close switch and as the liftgate is closing, press the B71R liftgate object sensor - right or the B71L liftgate object sensor - left. The liftgate should stop and power open.
    • If the liftgate continues to power close, replace the K39 liftgate module.
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