APPENDIX I:
ABS Q&A
1. What‘s ABS?
ABS, the abbreviation of Anti-lock Brake System, means the function of Anti-lock Brake
System (ABS), which is available to ensure that the vehicle traveling on different roads can
get the optimal brake distance, and, at the same time, has the better brake stability and
steering capacity.
2. Why the ABS is required?
The lock of front wheel will make the vehicle lose the steering capacity when braking, and
the lock of rear wheel will cause the disalignment or slide. Through preventing the wheel
from being locked, the ABS helps you to keep the operation control on the vehicle when
braking. In this case, you can change the direction and wind off the obstacle.
3. How to recognize whether your vehicle is quipped with ABS?
Two methods are recommended: the first one is to observe the instrument panel or switch
board when the vehicle starts and determine whether there is a ABS warning lamp which
lights at a short time. The second one is simpler, i.e., you consult your provider directly.
4. How the ABS works?
Based on the signals from the wheel speed sensor, the electronic controller in the ABS will
adjust the pressure on all wheel brakes via the solenoid valve in accordance with the
specified control logic, which looks like an experienced driver applies the repeat braking,
but the computer reacts more quickly than brain, and thus its effect is better.
5. How to determine whether the ABS is working?
You will feel the chattering of brake pedal when the ABS is working, and, at the same time,
you will also hear the sound from the hydraulic controller working. Here, keep in your mind
that you shall not be afraid of them, and shall step on the brake pedal reliably. Is the brake
distance of vehicle with ABS shorter than that of vehicle without ABS? In the great
majority of cases, the answer is YES, especially on the snow or wet road. But remember not
to forget to turn the steering wheel and wind off the obstacle at the critical moment.
6. How to do after ABS fails to operate?
The ABS warning lamp will light continuously once the ABS failure. In this case, the ABS
fails to operate, but the regular brake system is good. You just conduct the braking
operation in accordance with the regular method.
7. When the ABS warning lamp lights?
The ABS warning lamp will extinguish after it lights for 1.7 s after the vehicle starts. Since
then, the ABS warning lamp lights only when the ABS fails to operate. So, do not forget to
immediately get to the Service Station once the ABS warning lamp lights. It is
recommended that you don’t repair the ABS as your pleasure.
“FOUR DOS” and “FOUR DONTS” for the use of ABS
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