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Liftgate Release Malfunction

WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector C3 at the I/P fuse block.
  2. Connect a test lamp between the control circuit terminal 9 and B+.
  3. Ignition ON, command the liftgate release ON and OFF by pressing the liftgate switch. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.
    • If the test lamp is always OFF, test the control circuit for a short to voltage or an open / high resistance. If the circuit tests normal, replace the BCM.
  4. Connect a test lamp between the supply voltage circuit terminal 20 and ground.
  5. Command the liftgate release ON and OFF by pressing the liftgate switch. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the 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 BCM.
  6. Ignition OFF, connect the harness connector C3 at the I/P fuse block. Disconnect the harness connector at the liftgate latch.
  7. Test for less than 1.0 Ω of resistance between the liftgate latch ground circuit terminal 3 and ground.
    • If greater than the specified range, test the ground circuit for an open / high resistance.
  8. Connect a test lamp between the control circuit terminal 1 and ground.
  9. Ignition ON, command the liftgate release ON and OFF by pressing the liftgate switch. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the I/P fuse block.
    • If the test lamp is always OFF and the L / GATE fuse is good, test the control circuit for an open/high resistance. If the circuit tests normal, test or replace the I/P fuse block
    • If the test lamp is always OFF and the L / GATE fuse is open, test the control circuit for a short to ground. If the circuit tests normal, test or replace the liftgate latch
  10. If all circuits test normal, test or replace the liftgate latch.
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