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Home >> Cadillac >> 2007 >> CTS Base, 2.8 T, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 763 (Keyless Entry System And Remote Functions) >> Diagnostic Information and Procedures >> DTC B2961 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2013 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the ignition switch.
  2. Verify the scan tool Authentication Switch parameter is Inactive.
    • If not the specified value, test the signal circuit terminal 5 for a short to voltage. If the circuit tests normal, replace the RCDLR.
  3. Install a 3A fused jumper wire between the signal circuit terminal 5 and B+. Verify the scan tool Authentication Switch parameter is Active.
    • If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the RCDLR.
  4. If all circuits tests normal, test or replace the ignition switch.
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