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Home >> Buick >> 2021 >> Envision Essence, AWD >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B1576 - Liftgate Object Sensor Malfunction >> Component Testing
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Component Testing

  1. Ignition OFF, disconnect the harness connector at the appropriate B71 Liftgate Side Sensor.
  2. Test for 8k-12k Ω between the signal terminal 1 and the low reference circuit terminal 2.
    • If not between 8k-12k 

      Replace the B71 Liftgate Side Sensor.

    • Go to next step: If between 8k-12k Ω 
  3. All OK
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