Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the steering wheel controls switch - left.
- Ignition ON, verify that a test lamp illuminates between the signal circuit terminal 9 and B+.
- If the test lamp does not illuminate, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
- If all circuits test normal, test or replace the steering wheel controls switch - left.