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Home › Cadillac › 2009 › XLR Base › Repair and Diagnosis › Body & Frame › Seats › Power Seat System › Diagnostic Information and Procedures › Memory Seat Feature Inoperative › Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the memory seat adjuster switch.
  2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal C and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  3. Install a 3A fused jumper wire between the B+ circuit terminal C and the signal circuit terminal A. Verify the scan tool Memory 1 Select 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 MSM.
  4. Install a 3A fused jumper wire between the B+ circuit terminal C and the signal circuit terminal B. Verify the scan tool Memory 2 Select 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 MSM.
  5. If all circuits test normal, test or replace the memory seat switch.
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