Tech-1 Scan Tool Data Definitions

Description:

The Tech 1 (and T-1OO), when plugged into the DLC, become part of the vehicle's electronic system. The Tech 1 (and T-1OO) 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.

Each test mode has specific diagnosis capabilities which depend upon various keystrokes. In general, five (5) keys control sequencing: "YES," "NO," "EXIT," up arrow and down arrow. The FO through F9 keys select operating modes, perform functions within an operating mode, or enter code or model year designations.

In general, the Tech 1 has six (6) test modes for diagnosing the antilock brake system. The six (6) test modes are as follows:

^ MODE FO: DATA LIST - In this test mode, the Tech 1 continuously monitors wheel speed data, brake switch status and other inputs and outputs.

^ MODE F1: CODE HISTORY - In this mode, code history data is displayed. This data includes how many ignition cycles since the code occurred, along with other ABS information. The first five (5) and last code set are included in the ABS history data.

^ MODE F2: TROUBLE CODES - In this test mode, diagnostic trouble codes stored by the EBCM, both current ignition cycle and history, may be displayed or cleared.

^ MODE F3: ABS SNAPSHOT - In this test mode, the Tech 1 captures ABS data before and after a system malfunction (auto trigger) or from a manual key press.

^ MODE F4: ABS TESTS - In this test mode, the Tech 1 performs hydraulic modulator functional tests to assist in problem isolation during troubleshooting.

^ MODE F5: MOTOR REHOME - In this mode, the Tech 1 commands the EBCM to rehome the motors on the hydraulic modulator. This mode should ALWAYS be used prior to bleeding the brake system.

For more information refer to the ABS section of the Tech 1 Operators Manual.