Circuit/System Testing
WARNING: This page is about a different car, the 2008 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that a test lamp illuminates between the B+ circuit fuses in the BCM listed below and ground:
- The Ign Sensor fuse
- The Interior Lights fuse
- The Door Lock fuse
- If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
- Ignition OFF, disconnect the harness connectors at the BCM.
- Ignition OFF and scan tool disconnected, open and close the driver door, and wait 45 seconds. Test for less than 5 ohms between the ground circuit terminals listed below and ground:
- Terminal 9 X1
- Terminal 12 X1
- Terminal 13 X2
- Terminal E12 X4
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Verify that a test lamp illuminates between the B+ circuit terminals listed below and ground:
- Terminal 11 X1
- Terminal D12 X3
- 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 BCM.