Yamaha 5DF-AE2, Дополнительное руководство по обслуживанию

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13
ABS OUTLINE
GEN
INFO
CAUTIONS FOR OPERATION
The YAMAHA ABS applies the double system control type with the independent hydraulic system for the
front and rear wheels respectively.
Accordingly, the brake operation is the same as usual scooters providing the right hand brake lever to be
used for the front wheel and left hand brake lever for the rear wheel.
When the locking tendency of wheels due to urgent brake is detected on each wheel, the independent hy-
draulic control is performed by each brake hydraulic system.
The YAMAHA ABS controls the hydraulic pressure by electronic controls.
With the main switch turned on, when the electronic control unit always operates the wheel’s locking move-
ment and checks the system function simultaneously.
If the failure such as a malfunction occurs to the ABS or peripheral electric system, the scooter automatically
shifts to apply the normal brake function.
If the ABS warning light goes on:
When the main switch is turned on, the ABS warning light goes on for about 2 seconds.
While pressing the starter switch, the ABS warning light and engine oil level warning light goes on.
If the ABS warning light goes on during the riding, stop the scooter at the safe place, stop the engine and
turn the main switch off. Turn the main switch on again. It is normal if the ABS warning light goes on and
off in about 2 seconds.
Even if the ABS warning light keeps going on and will not go off, or it goes on again after riding, the
vehicle’s performance as a normal brake is still maintained.
If the rear wheel is raced, the ABS system may judge as the malfunction to flashing or goes on the ABS
warning light. In this case, turn the main switch off once. Then, turn on again. The ABS system is normal
if the ABS warning light goes on and off in about 2 seconds.
ABS works normal when the ABS warning light flashings.
ABS function:
ABS is not designed to shorten the braking distance or improve the cornering performance.
The braking distance may become longer in comparison with scooters without ABS depending on the
road condition, keep a lower speed and safe distance between yourself and the other vichicls.
It is basic for a scooter to brake while driving straight. Sudden braking while cornering affects the motion
characteristics of chassis. Avoid it.
Brake system in which the hydraulic control has been performed by the ABS system alerts a rider that
the wheel had an inclination to lock by returning the reaction force to the brake lever. In this case, this
condition is a sign that the grip between road surface and tires had come close to the limit point. The rear
wheel’s locking state* which occurs when the strong engine brake is applied on the slippery road is be-
yond the ABS control range. In these cases, drive the vehicle carefully.
The ABS does not work when the main switch is turned off. It becomes the normal braking function.
* Locking state: By braking stronger than the tires’ gripping force, the chassis moves forward but the wheels
do not rotate.