Last Modified: 11-13-2015 6.6 D Doc ID: RM000001DWU01WX
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster): SYSTEM
DESCRIPTION; 2016 MY Tacoma [08/2015 - ]
1. SYSTEM DESCRIPTION
he skid control ECU is built into the hydraulic brake booster.
(a) ABS (Anti-lock Brake System)
The ABS helps prevent the wheels from locking when the brakes are applied firmly or when braking on a
(b) Multi-terrain Anti-lock Brake System (Multi-terrain ABS)
This function detects off-road driving in sand, mud, gravel, dirt and so on based on signals from the yaw
rate and acceleration sensor, the speed sensor and the ECM, and then automatically switches to the ABS
control most appropriate for the current road conditions.
(c) EBD (Electronic Brake force Distribution)
The EBD control utilizes ABS, realizing proper brake force distribution between the front and rear wheels in
accordance with the driving conditions.
In addition, when braking while cornering, it also controls the brake forces of the right and left wheels,
helping to maintain the vehicle stability.
(d) VSC (Vehicle Stability Control)
The VSC system helps prevent the vehicle from slipping sideways as a result of strong front wheel skid or
strong rear wheel skid during cornering.
(e) TRAC (Traction Control)
The TRAC system helps prevent the drive wheels from slipping if the driver presses down on the
accelerator pedal excessively when starting off or accelerating on a slippery surface.
he TRAC system operates when H2 (2WD) mode is selected.
(f) A-TRAC (Active Traction Control)
During rugged off-road driving, this function controls the brake fluid pressure that is applied to slipping
wheels, and distributes the drive force that would have been lost through the slippage to the remaining
wheels in order to achieve an LSD (Limited Slip Differential) effect. As a result, the vehicle's off-road
drivability and ability to free itself from ruts have been increased.
The A-TRAC system operates when L4 (Low speed 4WD) mode is selected.
(g) AUTO-LSD (Auto Limited Slip Differential)
hen the vehicle is in H2 (2WD) mode, the AUTO LSD will operate with the VSC OFF switch on (TRAC OFF
mode (AUTO LSD control)) and the accelerator pedal depressed.
the AUTO LSD will operate with the VSC OFF switch on (TRAC OFF mode (AUTO LSD control)) and the
accelerator pedal depressed. The AUTO LSD system is used to apply brake pressure and limit differential
slippage, thus transmitting drive torque to the other drive wheel to ensure traction when starting under the