Circuit/System Testing
- Verify that no DTCs are present in the ECM.
- If any DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If no DTCs are set
- If any DTCs are set
- Replace the K19 Suspension Control Module and verify the DTC does not reset.
- If the DTC sets
Replace the K20 Engine Control Module.
- Go to next step: If the DTC does not set
- If the DTC sets
- All OK.