Mazda 2007 CX-9, Service Highlights

Page: 198 / 614

DYNAMIC STABILITY CONTROL/ROLL STABILITY CONTROL
04-18–10
During ABS and EBD control
•
During antilock brake system (ABS) and electronic brake force distribution (EBD) control, when wheel lock-up
is about to occur, the traction switch and stability control solenoid valves are not energized, and the inlet and
outlet solenoid valves are energized and controlled in three pressure modes (increase, reduction or maintain),
thereby adjusting brake fluid pressure. Brake fluid during pressure reduction is temporarily stored in the
reservoir and afterwards the pump motor operates the pump to return the fluid to the master cylinder. (The
following figure shows these conditions: right front wheel pressure increased, left front wheel pressure
maintained, and both rear wheels pressure decreased.)
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
OFF (open) OFF (closed) OFF (open) OFF (closed) Stopped
During
pressure
maintain
mode
OFF (open) OFF (closed) ON (closed) OFF (closed) Stopped
During
pressure
reduction
mode
OFF (open) OFF (closed) ON (closed) ON (open) Operating
3423-1U-06H(04-18).fm 10 ページ ２００６年１１月２２日 水曜日 午後２時３８分