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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
  2. Ignition ON, test for ignition voltage between the ignition circuit terminal 3 and ground.
    • If greater than the specified value, test the ignition circuit for a short to voltage. If the circuit tests normal, replace the BCM.
    • If less than the specified value, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  3. Verify the scan tool SWC Bank 1 parameter is Idle.
    • If not the specified value, test the signal circuit terminal 4 for a short to voltage. If the circuit tests normal, replace the BCM.
  4. Ignition OFF, connect the harness connector at the right steering wheel controls switch assembly.
  5. Ignition ON, while pressing and releasing each of the right steering wheel control switches, observe the scan tool SWC Bank 1 parameter. The SWC Bank 1 parameter should display a value corresponding to SW 1 - SW 10 for each of the right steering wheel control switches pressed.
    • If not the specified value, test the signal circuit terminal 4 for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the right steering wheel controls switch.
  6. If all circuits test normal, test or replace the BCM
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