Preliminary Inspection
- Perform the hydraulic brake system diagnostic system check. See HYDRAULIC BRAKE SYSTEM DIAGNOSTIC CHECK under TROUBLE SHOOTING. The diagnostic system check will verify that all of the following are true:
- There are not DTCs set.
- The control modules can communicate via the serial data link.
- In order to duplicate the customer's concern before using the hydraulic brake symptom tables, perform the VEHICLE ROAD TEST under TROUBLE SHOOTING.
- Review the system operation in order to familiarize yourself with the system functions. See DESCRIPTION & OPERATION .