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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the B27A door handle switch - driver exterior.
  2. Ignition ON, verify the scan tool Exterior Driver Door Handle Switch parameter is Inactive.
    • If not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K84 keyless entry control module.
  3. Connect the a 3 A jumper harness between the signal circuit terminal 2 and ground. Verify the scan tool Exterior Driver Door Handle Switch parameter is Active.
    • If not the specified value, test the signal circuit terminal 2 for a open/high resistance. If the circuit tests normal, replace the K84 keyless entry control module.
  4. If all circuits test normal, test or replace the B27A door handle switch - driver exterior.
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