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Circuit/System Testing

WARNING: This page is about a different car, the 2007 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

Liftgate Handle Switch Malfunction

  1. Ignition OFF, disconnect the harness connector at the liftgate handle switch.
  2. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal B and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the LGM.
  3. Ignition ON, verify with a scan tool the liftgate handle sw. status parameter is INACTIVE.
    • If not the specified value, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the LGM.
  4. Install a 3-amp fused jumper wire between the signal circuit terminal A and ground. Verify the scan tool the liftgate handle sw. status parameter is ACTIVE.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the LGM.
  5. If all circuits test normal, test or replace the liftgate handle switch.

Liftgate Close Switch Malfunction

  1. Ignition OFF, disconnect the harness connector at the liftgate close switch.
  2. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the LGM.
  3. Ignition ON, verify with a scan tool the liftgate handle sw. status parameter is INACTIVE.
    • If not the specified value, test the signal circuit terminal D for a short to ground. If the circuits test normal, replace the LGM.
  4. Install a 3-amp fused jumper wire between the signal circuit terminal D and ground. Verify the scan tool the liftgate handle sw. status parameter is ACTIVE.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the LGM.
  5. If all circuits test normal, test or replace the liftgate close switch.
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