Toyota Camry Hybrid AHV40 Manual page 126

JBRAKE CONTROL SYSTEM
1. General
D A brake management function, VDIM (Vehicle Dynamics Integrated Management), which delivers
comprehensive vehicle movement control, is used.
D An ECB (Electronically Controlled Brake System) is used.
D The brake control system is controlled by the skid control ECU.
2. VDIM (Vehicle Dynamics Integrated Management)
General
D The VDIM manages all functions, such as the ABS with EBD, the Brake Assist, the TRAC, and the VSC.
And is operated by the ECB (Electronically Controlled Brake System), which regulates brake fluid
pressure. In addition, the regenerative brake cooperative control and power steering cooperative control
functions are also available, thus allowing the VDIM to perform the comprehensive management.
D Conventional brake control systems begin to control either the braking or motive force in order to
stabilize the vehicle motion, when it becomes unstable due to loss of tire traction. In contrast, in order
to maintain stable vehicle control, the VDIM commences controlling the brake, hybrid and steering
systems in accordance with changes in balance before the vehicle becomes unstable. As a result,
maintenance smooth vehicle control is achieved.
D Conventional brake control systems manage all related functions, such as the ABS with EBD, the Brake
Assist, the TRAC and the VSC, independently, according to the vehicle dynamics. In contrast, the VDIM
provides smooth control by seamlessly integrating all brake control related functions.
"
Conceptual Diagram of Control Management
Vehicle
Cornering
D VSC
Braking
D ABS with EBD
Cornering
Braking
CHASSIS - BRAKE
Conventional
Vehicle
VDIM
A
Driving
D TRAC
Vehicle Control Areas
D Each function has its own control
area and is operated independently
Cornering
D VSC
Driving
Vehicle Control Areas
D All functions are operated seamlessly
in unison with each other
Cornering
CH-25
277CH143
277CH144