Description of on-Board Diagnostics

SELF-DIAGNOSTICS
Tools Required
Scan Tool
The electronic brake control module (EBCM) contains sophisticated on-board diagnostics that, when accessed with a scan tool, are designed to identify the source of any system malfunction as specifically as possible, including whether the malfunction is intermittent. There are 53 DTCs to assist with diagnosis.
When using the scan tool with the ABS VI, the last DTC is specifically identified, and specific ABS data is stored at the time of this malfunction. Also, in addition to the last DTC set, there is information about the first three DTCs set. Using the scan tool, each input and output can be monitored, thus enabling malfunction confirmation and repair verification. Manual control of components and automated functional tests are also available when using the scan tool. Details of many of these functions are contained in the following sections.