Toyota Tundra (2015 year). Manual — part 220

Last Modified: 9-16-2014

6.6 D

Doc ID: RM000000ONE03YX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: SYSTEM DESCRIPTION; 2015 MY Tundra

[08/2014 - ]

SYSTEM DESCRIPTION

1. SYSTEM DESCRIPTION

HINT:

The skid control ECU is built into the VSC actuator.

(a) ABS (Anti-lock Brake System)

The ABS helps prevent the wheels from locking when the brakes are applied firmly or on a slippery surface.

(1) Operation description

The skid control ECU detects wheel lock conditions by receiving vehicle speed signals from each speed

sensor, and sends control signals to the pump motor and solenoid valve to prevent the wheels from

(b) EBD (Electronic Brake Force Distribution)

The EBD control utilizes the ABS, performing proper brake force distribution between the front and rear

wheels in accordance with the driving conditions. When the brakes are applied while cornering, it also

(1) Operation description

The ABS and BRAKE warning lights and SLIP indicator light come on to indicate malfunctions in the EBD

system.

(c) BA (Brake Assist)

vehicle's braking performance.

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: ...

(1) Operation description

The skid control ECU receives speed signals from each speed sensor and the fluid pressure signal from

the master cylinder pressure sensor to determine whether brake assist is necessary. If brake assist is

deemed necessary, the skid control ECU sends control signals to the pump motor and solenoid. The

pump and the solenoid valve then control the pressure applied to each wheel cylinder. The ABS

warning light and the SLIP indicator light come on to indicate malfunctions in the BA system.

Through the VSC OFF switch, the vehicle can be changed to normal mode, TRAC OFF mode, AUTO LSD

mode and VSC OFF mode.

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: ...

2WD vehicles and 4WD vehicles in 2H mode

CONTROL

MODE

INDICATOR LIGHT

TRAC OFF INDICATOR

LIGHT*1

TRAC OFF

INDICATOR*2

AUTO LSD INDICATOR

LIGHT

VSC OFF INDICATOR

LIGHT

Normal mode

-

-

-

-

TRAC OFF

mode

-

-

○

-

AUTO LSD

mode

-

-

○

○

VSC OFF

mode

○

○

-

○

*1: w/o Multi-information Display

*2: w/ Multi-information Display

HINT:

○: Illuminated
-: Not illuminated

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: ...