Description

The TECH-1, when connected to the DLC, becomes part of the vehicle's electronic system. The TECH-1 can perform the following functions:
- Display Antilock Brake System (ABS) data.
- Display and clear ABS DTCs.
- Control ABS components.
- Perform extensive ABS diagnostics.
- Provide diagnostic testing for intermittent ABS conditions. Each test mode has specific diagnosis capabilities which depend upon various keystrokes. In general, five keys control sequencing: "YES," "NO," "EXIT,", "(up arrow)" and "(down arrow)". The "F0" through "F9" keys select operating modes, perform functions within an operating mode, or enter DTC or model year designations.
In general, the TECH-1 has six test modes for diagnosing the antilock brake system.
MODE F0: 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 test mode, DTC history data is displayed. This data includes how many drive cycles since the DTC occurred, along with other ABS information.
The first five and last DTC set are included in the ABS history data.
MODE F2: TROUBLE CODES - In this test mode, DTCs stored by the Electronic Brake Control Module (EBCM), both current ignition cycle and history, may be displayed or cleared. When a DTC is displayed with a "C," it is an indication that the DTC is current. When a DTC is displayed with an "H", that means that it is a history DTC.
MODE F3: SNAPSHOT- In this test mode, the TECH-1 captures ABS data before and after a fault occurrence, manual key press or system malfunction (auto trigger).
MODE F4: MISC. TESTS - In this test mode, the TECH-1 performs various 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 and piston in the hydraulic modulator assembly. This mode should ALWAYS be used prior to bleeding the brake system.