Scan Tool Diagnostics

The scan tool, when plugged into the Data Link Connector (DLC), becomes part of the vehicle's electronic system. The scan tool can perform the following functions:
^ Display ABS data.
^ Display and clear ABS diagnostic trouble codes.
^ Control ABS components.
^ Perform extensive ABS diagnosis.
^ Provide diagnostic testing for intermittent ABS conditions.

Verify the proper system operation and the absence of DTCs after completing the clearing procedure.
^ Each test mode has specific diagnosis capabilities. The scan tool has five test modes for diagnosing the ABS system. The five test modes are as follows:
^ DATA LIST - In this test mode, the scan tool continuously monitors wheel speed data, brake switch status and other inputs and outputs.
^ DTC HISTORY - In this mode, Diagnostic Trouble Code (DTC) history data is displayed. This data includes how many ignition cycles since the DTC occurred, along with other information for the last DTC set. The first five and last DTC set are included in the ABS history data.
^ DTC(s) - In this test mode, diagnostic trouble codes stored by the EBCM, both current ignition cycle and history, may be displayed or cleared.
^ SNAPSHOT - In this test mode, the scan tool captures data before and after a system malfunction (auto trigger) from a forced manual key press or from a DTC setting.
^ SPECIAL FUNCTIONS - In this test mode, the scan tool performs various functional tests to assist in problem isolation during troubleshooting.