For 1990-2009 cars

The Scan Tool becomes part of the electronic system of the vehicle when it is plugged into the DLC.

The Scan Tool can perform the following functions:

• | Display the ABS/TCS data

• | Display and clear ABS/TCS diagnostic trouble codes

• | Control the ABS/TCS components

• | Perform extensive ABS/TCS diagnosis

• | Provide the diagnostic testing for intermittent ABS/TCS conditions

Each test mode has specific diagnosis capabilities which depend upon various keystrokes.

In general, the Scan Tool has five test modes for diagnosing the antilock brake system:

• | Data List:

| In this test mode, the Scan Tool continuously monitors the following conditions:

• | Wheel speed data

• | Brake switch status

• | ABS status

• | TCS status

• | Other inputs and outputs

• | Items on Data List 2 cannot be read if a DTC is present.

• | DTC History:

| The ABS/TCS system has no DTC history capabilities.

• | Diagnostic Trouble Codes:

| In this test mode, diagnostic trouble codes stored by the EBCM/EBTCM may be displayed or cleared.

• | ABS/TCS Snapshot:

| In this test mode, the Scan Tool captures ABS/TCS data at the following moments:

• | Before and after a malfunction occurrence

• | From a forced manual snapshot trigger

• | Items in Snapshot 2 cannot be read until the DTCs are cleared from the memory.

• | ABS/TCS Tests:

| In this test mode, the Scan Tool performs hydraulic modulator functional tests. These tests assist in isolating the problem during troubleshooting.

| Tests cannot be performed until all of the stored DTCs have been cleared from the memory.

For more information, refer to the Chassis section of the Scan Tool Operators Manual.