Circuit/System Testing
- Ignition OFF, disconnect the harness connectors at the appropriate module.
- Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 ohms between the appropriate ground circuit terminals listed below and ground.
- Terminal 1 (IPC)
- Terminal 9 (DRR)
- Terminal 17 X1 (BCM)
- Terminal 19 X1 (BCM)
- Terminal 20 X1 (BCM)
- Terminal 50 X2 (BCM)
- Terminal A X1 (HVAC)
- Terminal A12 X1 (Radio)
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Verify that a test lamp illuminates between the appropriate B+ circuit terminals listed below and ground.
- Terminal 12 (IPC)
- Terminal 16 (DRR)
- Terminal 46 X1 (BCM)
- Terminal 50 X1 (BCM)
- Terminal 51 X1 (BCM)
- Terminal 52 X1 (BCM)
- Terminal 49 X2 (BCM)
- Terminal D X1 (HVAC)
- Terminal B1 X1 (Radio)
- If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
- If all circuits test normal, replace the appropriate module.