Section 6 (Anti-Lock Brake System - With Traction Control): Description

WARNING: This page is about a different car, the 1998 Lexus SC 400, 1998 Lexus SC 300, 1997 Lexus SC 400, and 1997 Lexus SC 300. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This article contains information regarding ABS system equipped with the optional TRAC (traction control) system. For diagnostic information pertaining specifically to TRAC system, see appropriate TRACTION CONTROL article.

Anti-Lock Brake System (ABS) controls brake fluid pressures to each individual front and rear brake caliper during a panic stop to prevent wheel lock-up. System consists of actuator, solenoid relay, pump motor relay, Electronic Control Unit (ECU), and a speed sensor at each wheel. If a system fault occurs, the ECU stores a self-diagnostic code(s) that can be retrieved to diagnose malfunction. Some models are equipped with an optional Traction Control (TRAC) system, which is integrated with the ABS system. See Fig 1 or Fig 2 .

NOTE: For more information on brake system, see appropriate BRAKE SYSTEM article.

Fig 1: Locating ABS Components (1997 Model)

Fig 2: Locating ABS Components (1998 Model)