Mazda 2007 CX-9, Особенности сервиса, Страница: 200 / 614

DYNAMIC STABILITY CONTROL/ROLL STABILITY CONTROL
04-18–12
During DSC control (suppress oversteer tendency) and TCS control
•
When a large oversteer tendency or driving wheel spin is determined, the traction control solenoid and stability
control solenoid valves are energized, switching the hydraulic circuits. At the same time, the pump motor is
actuated to operate the pump, thereby increasing pressure by supplying brake fluid pressure to the caliper
piston of the outer front wheel or the slipping driving wheel. Also at this time, the inlet solenoid valve of the inner
rear wheel is energized and the hydraulic circuit of this wheel is closed.
•
After a pressure increase, brake fluid pressure is adjusted using the three pressure modes (reduction,
maintain, increase) so that the target wheel speed is obtained. (The following figure shows a left turn, or control
of right front wheel spin (during pressure increase mode).)
Solenoid valve operation table
Traction control
solenoid valve
Stability control
solenoid valve
Inlet solenoid valve Outlet solenoid valve
Pump
motor,
pump
LF—RR RF—LR LF—RR RF—LR LF RF LR RR LF RF LR RR
During
pressure
increase
mode
ON
(closed)
OFF
(closed)
ON
(open)
ON
(clos
ed)
OFF
(ope
n)
ON
(clos
ed)
OFF
(ope
n)
OFF (closed) Operating
During
pressure
maintain
mode
OFF
(open)
ON
(closed)
OFF (closed)
OFF
(ope
n)
ON
(clos
ed)
ON
(clos
ed)
OFF
(ope
n)
OFF (closed) Operating
During
pressure
reduction
mode
OFF
(open)
ON
(closed)
OFF (closed)
OFF
(ope
n)
ON (closed)
OFF
(ope
n)
OFF
(clos
ed)
ON
(ope
n)
OFF
(clos
ed)
OFF
(clos
ed)
Operating
3423-1U-06H(04-18).fm 12 ページ ２００６年１１月２２日 水曜日 午後２時３８分