Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Cadillac >> 2009 >> XLR Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 144 (Power Seat System) >> Diagnostic Information and Procedures >> Memory Seat Feature Inoperative >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac XLR. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the memory seat switch.
  2. Ignition OFF, 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. Ignition ON, verify the scan tool memory recall switch parameters display IDLE for both switches.
    • If not the specified value, test the appropriate switch signal circuit for a short to ground. If the circuit tests normal, replace the DDSA.
  4. Install a 3A fused jumper wire between the B+ circuit terminal C and the signal circuit terminal A. Verify the scan tool memory recall switch parameter displays MEMORY 1.
    • 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 DDSA.
  5. Install a 3A fused jumper wire between the B+ circuit terminal C and the signal circuit terminal B. Verify the scan tool memory recall switch parameter displays MEMORY 2.
    • 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 DDSA.
  6. If all circuits test normal, test or replace the memory seat switch.
scientia non olet · About Mike's Workshop Manuals