Yamaha XT1200Z 2010 Service Manual page 30

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
Emergency braking (ABS activated and UBS not activated)
Depressurizing phase:
When the front wheel (or the rear wheel) is about to lock, the outlet solenoid valve is opened by the
"depressurization" signal transmitted from the ABS ECU. When this occurs, the inlet solenoid valve
closes the brake line from the brake master cylinder. Because the outlet solenoid valve is open, the
brake fluid is sent to the buffer chamber. As a result, the hydraulic pressure in the brake caliper is re-
duced. The brake fluid stored in the buffer chamber is pumped back to the brake master cylinder by the
hydraulic pump linked to the ABS motor.
Pressurizing phase:
The outlet solenoid valve is closed by the "pressurization" signal transmitted from the ABS ECU. At this
time, the ABS ECU controls the opening of the inlet solenoid valve. As the inlet solenoid valve opens,
the brake line from the brake master cylinder opens, allowing the brake fluid to be sent to the brake
caliper.
b
1. Front brake master cylinder
2. Brake lever
3. Rear brake master cylinder
4. Brake pedal
5. Separation solenoid valve
6. Shuttle solenoid valve
7. Damping chamber
8. ABS motor
9. Hydraulic pump
10. Inlet solenoid valve
11. Outlet solenoid valve
12. Check valve
13. Buffer chamber
14. Rear brake caliper
15. Front brake calipers
A. Pressurize
B. Depressurize
a. Input
email: info@motomatrix.co.uk
a
1
2
7
9
13
10
11
c
15
3
7
9
8
d
13 12
10
11
c
14
b. Inlet solenoid valve is closed
c. Outlet solenoid valve is open
d. Hydraulic pump is operating
1-21
FEATURES
a
4
5
6
b
A
B