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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 480 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> Power Door Lock Key Cylinder Switches Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Except RPO AXC/AXE

  1. Ignition OFF, disconnect the harness connector at the driver door latch assembly.
  2. Test for less than 1.0 ohm between the ground circuit terminal 8 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify the scan tool Door Key Cyl Unlock Switch parameter is Inactive.
    • If not the specified value, test the signal circuit terminal 9 for a short to ground. If the circuits test normal, replace the BCM.
  4. Install a 3-amp fused jumper wire between the signal circuit terminal 9 and ground, verify the scan tool Door Key Cyl Unlock Switch parameter is Active.
    • If not the specified value, 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 tests normal, test or replace the driver door latch assembly.

RPO AXC/AXE

  1. Ignition OFF, disconnect the harness connector at the driver door latch assembly.
  2. Ignition ON, verify the scan tool Door Key Cyl Unlock Switch parameter is Idle.
    • If not the specified value, test the signal circuit terminal 9 for a short to ground. If the circuit tests normal, replace the DDM.
  3. Install a 3-amp fused jumper wire between the signal circuit terminal 9 and ground, verify the scan tool Door Key Cyl Unlock Switch parameter is Unlock.
    • If not the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the DDM.
  4. Install a 3-amp fused jumper wire between the signal circuit terminal 9 and the low reference circuit terminal 8, verify the scan tool Door Key Cyl Unlock Switch parameter is Unlock.
    • If not the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the DDM.
  5. If all circuits tests normal, test or replace the driver door latch assembly.
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