（1）ABS与常规制动系统是不可分割的，常规制动系统一旦出现问题ABS

(1) ABS and conventional braking system are inseparable. Once the conventional braking system has problems, ABS will not work properly, so they should be treated as a whole for maintenance. When the brake system fails, it is generally necessary to determine whether it is a conventional brake system failure or an ABS failure. You cannot focus only on the sensors, electronic controllers, and pressure regulators. <br>(2) As the ABS ECU is very sensitive to overvoltage and static voltage, to prevent damage, it should be noted that when the ignition switch is in the on position, do not disassemble the electrical components and wiring harness connectors in the system. Turn off the ignition switch; when charging the battery on the car with a charger, remove the battery cable from the car and then charge it. Remember that the charger cannot be used to start the engine; wear static electricity when welding on the car After unplugging the ECU connector, perform welding. <br>(3) High temperature environment is easy to damage the ECU. Generally, the ECU can only withstand a temperature of 90 ° C for a short time, and some require that the temperature of the ECU cannot exceed 82 ° C. When baking paint on the car, the ECU should be removed from the car as appropriate. <br>(4) There are accumulators in many ABS or ASR systems. Before servicing this type of brake hydraulic system, remember to release the pressure first to prevent high-pressure brake fluid from spraying and hurting people. The method of releasing the high-pressure brake fluid in the accumulator is to first turn off the ignition switch, and then repeatedly press and release the brake pedal (at least 25 times) until the brake pedal becomes very hard; Before the dynamic fluid system is fully installed, the ignition switch cannot be turned on to prevent the electric pump from energizing to run the pump oil. <br>(5) The brake fluid is required to be replaced once a year. The brake fluid should be checked and replenished in time. Generally, when the brake fluid level is too low, the ABS will automatically shut down. When storing and replacing the brake fluid, pay attention to keeping the utensils clean. <br>(6) Repair the wheel speed sensor very carefully. When disassembling, do not collide and knock on the sensor head, and do not use the sensor ring as a pry surface; prevent oil or other dirt from sticking to it, if necessary, apply a thin layer of anti-rust oil; some sensor gaps are not adjustable, Some are adjustable, and non-magnetic feeler gauges or paper sheets are used during adjustment.<br>(7) After the brake system is repaired, or when the brake pedal feels soft during use, the air in the brake hydraulic system should be eliminated. The air removal method of the brake system equipped with ABS and the conventional brake system are generally different, and the deflation procedure and sequence of different forms of ABS may also be different. When performing air removal, the method and sequence required by the corresponding maintenance manual should be carried out, otherwise the working time will be wasted and the air in the brake system will not be clean. <br>(8) The tires recommended by automobile manufacturers should be used as much as possible, and tires of different specifications should not be mixed, otherwise it will affect the braking effect of ABS. <br>(9) Most wheel speed sensors, electronic control units and pressure regulators in ABS are irreparable. If they are damaged, they should be replaced as a whole. <br>(10) The brake operation method of the ABS equipped car is the same as that of the ordinary brake system without ABS. However, during emergency braking, do not repeatedly step on the brake pedal, but as long as you continue to step on the brake pedal, ABS will enter the braking state without manual intervention. Stepping on the brake pedal more often will cause the ABS ECU not to receive the correct signal, resulting in poor braking effect. As far as the hydraulic brake system is concerned, when the brake pedal is working when the ABS is working, there will be a slight jitter, or some noise is heard. These are normal phenomena, indicating that the ABS is working, not a malfunction.

（1）ABS与常规制动系统是不可分割的，常规制动系统一旦出现问题ABS就不能正常工作，因此要将二者视为一个整体进行维修。当制动系统发生故障，一般应首先判断是常规制动系统故障还是ABS的故障，不能只把注意力集中到传感器、电子控制器和压力调节器上。<br>（2）由于ABS ECU对过电压、静电压非常敏感，为防止损坏，应注意：在点火开关处于接通位置时，不要拆装系统中的电器元件和线束接头，如要拆装，则应将点火开关断开；用充电机给汽车上的蓄电池充电时，要从车上拆下蓄电池电缆线后再进行充电，切记不可用充电机启动发动机；在车上进行电焊时，要戴好静电器再拔下ECU连接器后再进行电焊。<br>（3）高温环境容易损坏ECU。一般ECU只能在短时间承受90℃温度，有的要求ECU受温不能超过82℃。在对汽车进行烤漆作业时，应视情况将ECU从车上拆下。<br>（4）在很多ABS或ASR系统中有蓄能器，在对这类制动液压系统进行维修之前，切记首先泄压，以免高压制动液喷出伤人。释放蓄能器中的高压制动液的方法是，先将点火开关断开，然后反复踩、放制动踏板（至少25次以上），直到制动踏板变的很硬为止；另外，在制动液系统没有完全装好之前，不能接通点火开关，以免电动泵通电运转泵油。<br>（5）要求制动液每年更换一次。对制动液要做到及时检查、补充，一般制动液液面过低时ABS会自动关闭；在存储和更换制动液时，要注意保持器皿清洁。<br>（6）维修轮速传感器要十分细心。拆卸时不要碰撞和敲击传感头，不要用传感器齿环当作撬面；防止上面粘有油污或其他脏物，必要时可涂上一层薄防锈油；传感器间隙有的是不可调的，有的可调，调整时应用非磁性塞尺或纸片。<br>（7）在对制动系统进行维修后，或者使用过程中感觉制动踏板变软时应对制动液压系统中的空气进行排除。装备ABS的制动系统与常规制动系统的空气排除方法一般都有所不同，且不同形式的ABS，其放气的程序和顺序也可能不同。在进行空气排除时，应按照相应的维修手册所要求的方法和顺序进行，否则浪费工时，制动系统内的空气还放不干净。<br>（8）应尽量采用汽车生产厂商推荐的轮胎，不能混用不同规格的轮胎，否则会影响ABS的制动效果。<br>（9）大多数ABS中的轮速传感器、电控单元和压力调节器都是不可修复的如发生损坏，应进行整体更换。<br>（10）装备ABS的汽车，其制动操作方法和没ABS的普通制动系统方法是一样的。但在紧急制动时，不要重复的踩放制动踏板，而只要把脚持续的踩在制动踏板上，ABS就会进入制动状态，不需人工干预。多踩几脚制动踏板，反而会使ABS ECU得不到正确信号，导致制动效果不良。对液压制动系统而言，ABS工作时制动踏板工作时会有些轻微抖动，或听到一些噪声，这些都是正常现象，表明ABS正在工作，并非故障。

(1) ABS and conventional braking system are inseparable. Once there is a problem in the conventional braking system, ABS cannot work normally. Therefore, both of them should be considered as a whole for maintenance. When the brake system breaks down, it is generally necessary to determine whether it is a normal brake system fault or an ABS fault first, instead of focusing on sensors, electronic controllers and pressure regulators.<br>(2) Due to ABS ECU is very sensitive to over-voltage and static voltage. In order to prevent damage, attention should be paid to: when the ignition switch is in the on position, do not dismantle the electrical components and harness connectors in the system. If disassembling, disconnect the ignition switch; when charging the battery on the car with the charger, remove the battery cable from the car and charge again. Remember not to start the engine with the charger Motor: when welding on the vehicle, wear static electric appliance, unplug ECU connector and then conduct welding.<br>(3) ECU is easy to be damaged in high temperature environment. Generally, ECU can only bear 90 ℃ temperature in a short period of time, and some requirements require that ECU temperature cannot exceed 82 ℃. When baking paint on the car, the ECU shall be removed from the car as the case may be.<br>(4) There are accumulators in many ABS or ASR systems. Before repairing this kind of brake hydraulic system, remember to release the pressure first to avoid injury caused by high-pressure brake fluid. To release the high-pressure brake fluid in the accumulator, first disconnect the ignition switch, then repeatedly press and release the brake pedal (at least 25 times) until the brake pedal becomes hard; in addition, before the brake fluid system is completely installed, the ignition switch cannot be turned on to prevent the electric pump from electrifying and running the pump oil.<br>(5) The brake fluid is required to be changed once a year. The brake fluid shall be checked and replenished in time. Generally, when the brake fluid level is too low, ABS will automatically shut down. When storing and replacing the brake fluid, pay attention to keep the utensils clean.<br>(6) The wheel speed sensor should be repaired very carefully. During disassembly, do not collide and knock the sensor head, do not use the sensor ring as the pry surface; prevent oil or other dirt from sticking on it, and if necessary, apply a thin layer of antirust oil; some sensor gaps are not adjustable, some are adjustable, and non-magnetic feeler gauge or paper piece shall be used for adjustment.<br>(7) After repairing the brake system, or when the brake pedal feels soft during use, the air in the brake hydraulic system shall be removed. The air exhaust methods of the braking system equipped with ABS are generally different from those of the conventional braking system, and the procedure and sequence of air bleeding may be different for different forms of ABS. When removing air, it should be carried out according to the method and order required by the corresponding maintenance manual, otherwise, it will waste labor time and the air in the brake system will not be discharged clean.<br>(8) The tyres recommended by the automobile manufacturer shall be used as far as possible, and the tyres of different specifications shall not be mixed, otherwise the braking effect of ABS will be affected.<br>(9) Most of the wheel speed sensors, electronic control units and pressure regulators in ABS are irreparable. If they are damaged, they should be replaced as a whole.<br>(10) The brake operation method of the automobile equipped with ABS is the same as that of the ordinary brake system without ABS. However, in case of emergency braking, do not repeatedly step on the brake pedal. As long as the foot is continuously stepped on the brake pedal, ABS will enter the braking state without manual intervention. If the brake pedal is pressed more, the ABS ECU will not get the correct signal, resulting in poor braking effect. For the hydraulic brake system, when the ABS is working, the brake pedal will vibrate slightly or hear some noise. These are normal phenomena, indicating that the ABS is working, not a fault.