Description & Operation

WARNING: Vehicles are equipped with air bag supplemental restraint system. Before attempting any repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in appropriate AIR BAG RESTRAINT SYSTEMS article. Work must be started 90 seconds after the ignition switch is turned to "LOCK" and the negative (-) terminal is disconnected from the battery. The air bag system is equipped with a back-up system and may deploy if work is started before 90 seconds.

The ABS (Anti-Lock Brake System) helps to prevent the tires from locking up, thereby ensuring vehicle performance and handling ability.

The EBD (Electronic Brake force Distribution) system distributes optimal breaking force to the front and rear tires in accordance with driving conditions. Furthermore, braking force is distributed to the left and right wheels during braking when cornering to ensure vehicle performance and superior braking power.

The primary purpose of the Brake Assist system is to provide an auxiliary brake force assist to the driver who cannot generate a large brake force during emergency braking, thus maximizing the vehicle's brake performance.

The TRAC system helps prevent the drive wheels from slipping if the driver presses the accelerator pedal excessively when starting off or accelerating on a slippery surface.

The VSC system helps prevent the vehicle from slipping sideways as a result of strong front wheel skid or rear wheel skid during cornering.

The anti-lock brake system is equipped with a self-diagnostic capability which allows technician to retrieve data stored in control module to aid in diagnosis. See SELF-DIAGNOSTIC SYSTEM .

For component locations see Fig 1.

Fig 1: Identifying ABS With EBD & BA & TRAC & VSC System Components