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Circuit/System Testing

WARNING: This page is about a different car, the 2011 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the KR95A liftgate release relay.
  2. Test for less than 10 Ω between the ground circuit terminal 48 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Connect a test lamp between the control circuit terminal 44 and the ground circuit terminal 48.
  4. Ignition ON, command the rear closure latch to UNLATCH with a scan tool, the test lamp should turn ON while commanding the UNLATCH state.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
    • If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
  5. If all circuits test normal, test or replace the KR95A liftgate release relay.
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