1 东南菱帅(LIONCEL)乘用车ABS的基本构成和控制电路如图1所示,东南菱帅乘用车ABS主要由轮速传感器、制动灯开关、ABS液压元件(HU)、ABS电控单元(ABS ECU)、ABS电磁阀继电器、ABS泵电动机继电器和ABS故障指示灯等组成。其控制电路如图2所示。该系统具有故障自诊断功能,当ABS发生故障时,ABS ECU便以故障代码的形式储存故障内容,使用MUT-Ⅱ故障诊断仪可以读取ABS的故障代码和数据流,利用人工方 1 Southeast Lingshuai (LIONCEL) passenger car ABS basic structure and control circuit shown in Figure 1, Southeast Lingshuai passenger car ABS mainly by the wheel speed sensor, brake light switch, ABS hydraulic components (HU), ABS electronic control unit (ABS ECU), ABS solenoid valve relay, ABS pump motor relay and ABS fault indicator. The control circuit shown in Figure 2. The system has a fault self-diagnostic function, when the ABS fails, ABS ECU will store the fault content in the form of fault code, the use of MUT-Ⅱ fault diagnostic apparatus can read ABS fault code and data flow, the use of artificial square