Diagnostic Troubleshooting Strategy

DIAGNOSTIC TROUBLESHOOTING STRATEGY

Use these steps to plan your diagnostic strategy. If you follow them carefully, you will check most of the possible causes of a cruise control system malfunction.

1. Gather information from the customer.
2. Verify that the condition described by the customer exists.
3. Check the vehicle for any cruise control system DTC.
4. If you cannot verify the condition and there are no cruise control system DTCs, the malfunction may be intermittent.
5. If you can verify the condition but there are no cruise control system DTCs, find the fault.
6. If there is an cruise control system DTC, record the number of the code, then erase the code.
7. Re-create the cruise control system DTC set conditions to see if the same cruise control system DTC will set again.
- If the same cruise control system DTC sets again, perform the diagnostic procedures for the set code.