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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the liftgate switch.
  2. Test for less than 1.0 ohm between the ground circuit terminal C and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify the scan tool Int Trunk/Liftglass Sw parameter is Inactive.
    • If not the specified parameter, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the BCM.
  4. Install a 3A fused jumper wire between the signal circuit terminal A and the ground circuit terminal C. Verify the scan tool Int Trunk/Liftglass Sw. parameter is Active.
    • If not the specified parameter, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
  5. If all circuits test normal, test or replace the liftgate switch.
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