Chery T21 2014 Service Manual page 1102

25 - BRAKE CONTROL SYSTEM
2. ABS Operating (Relief) Condition
For vehicles equipped with ABS, if brake pressure is applied excessively, the friction coefficient between
wheels and road will decrease, and the wheels will be decelerated earlier than vehicle, which could cause
the wheels to lock first. In this case, the ABS control module transmits command that reduces the wheel
pressure to hydraulic control module. In other words, the normal open valve cuts off oil passage and the oil
passage of normal close valve is open, in order to reduce the wheel cylinder pressure. At this time, the
brake fluid drained from wheel cylinder is temporarily stored in the low pressure accumulator. Then, the
brake fluid stored in low pressure accumulator returns to the master cylinder with the rotation of motor.
Solenoid Valve
Normal Open Valve
Normal Close Valve
NO
NC
FL
25
6
25–
Powered Condition
MC1
NO
NC
RR
LPA
Solenoid Valve Condition
ON
ON
MC2
NO
EME
NC
LPA
Chery Automobile Co., Ltd.
CLOSE
OPEN
NO
NC
RL FR
RT21250040