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Home >> Chevrolet >> 2012 >> Caprice 6.0 2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 155 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B2976 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2011 Chevrolet Caprice. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the A23D door latch assembly-driver.
  2. Test for less than 10 Ω 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 Driver Door Ajar Sw parameter is Door Closed.
    • If not the specified value, test the signal circuit terminal 6 for a short to ground. If the circuit tests normal, replace the K9 BCM.
  4. Install a 3 A fused jumper wire between the signal circuit terminal 6 and the ground circuit terminal 8. Verify the scan tool Driver Door Ajar Sw parameter is Door Ajar.
    • 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 K9 BCM.
  5. If all circuits test normal, test or replace the A23D door latch assembly-driver.
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