For 1990-2009 cars only
Begin the system diagnosis with Diagnostic System Check - Cruise Control . The Diagnostic System Check will provide the following information:
| • | The identification of the control module(s) which command the system. |
| • | The ability of the control module(s) to communicate through the serial data circuit. |
| • | The identification of any stored diagnostic flash codes and their status. |
The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
If there are no flash codes present, refer to Symptoms - Cruise Control .
