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Home › Chevrolet › 2011 › Volt › Repair and Diagnosis › Body & Frame › Door Locks › Power Door Lock System And Release Systems › Diagnostic Information and Procedures › DTC B2500 › Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the A23D door latch assembly-driver.
  2. Ignition ON, verify the scan tool Driver Door Key Cylinder 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 S79D window switch - driver.
  3. If all circuits tests normal, test or replace the A23D door latch assembly-driver.
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