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BRAKES
15
Solenoid
valve
Electricity
status
Valve
open
Open- close
channel close
INLET
ON
CLOSE Master
cylinder
Wheel cylinder
OUTLET ON
OPEN
Wheel
cylinder
Reservoir
D.FAIL-SAFE FUNCTION:
If the ABS system detects any fault that may
adversely affect its performance it will switch to a
fail safe shut down mode. When this happens the
electricity supply to the solenoid valves is
deactivated, stopping control signal output, this
causes the valves to switch to their default state.
(Open for inlet valves / Closed for Outlet valves)
The System will light the relevant warning lamp at
the same time to inform the driver the vehicle has
either an ABS or an ABS and EBD failure.
In this condition, the conventional hydraulic brake
circuit will still function, allowing brake pressure to
reach all wheels. It should be noted that with an
ABS fault it will be possible to lock the wheels and
in the Case of an EBD failure the brake force
proportioning between front and rear will no
longer function and hence rear wheel lock is
possible before front.