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Door Open Switch Test - Front

WARNING: This page is about a different car, the 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the inoperative driver door lock assembly.
  2. Verify that a test lamp illuminates between the appropriate low reference circuit terminal listed below and B+.
    • Left Front Door Lock terminal 4
    • Right Front Door Lock terminal 1
    • If the test lamp does not illuminate, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the door control module
  3. Ignition ON, verify the appropriate scan tool Door Switch Door Open Sw. parameter is Inactive.
    • If not the specified value, test the appropriate signal circuit listed below for a short to ground. If the circuit tests normal, replace the appropriate door control module.
    • Left Front Door Lock terminal 1
    • Right Front Door Lock terminal 4
  4. Install a 3A fused jumper wire between the appropriate signal circuit terminal listed below and ground. Verify the appropriate scan tool Door Switch Door Open Sw. parameter is Open.
    • Left Front Door Lock terminal 1
    • Right Front Door Lock terminal 4
    • 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 door control module.
  5. If all circuits test normal, test or replace the inoperative door lock assembly.
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