故障现象一辆2011款奥迪A6L车,排量2.4 L,行驶里程约为7万km。据客户反映,该车在行驶过程中驱动防滑灯报警。故障分析连接VAS5052A,选择“03”进入制动电控系统中,调得2个故障代码(图1),根据引导型故障查询功能,需要更换ESP传感器单元(G419),更换后故障依旧。怀疑线路有问题,于是查阅电路图(图2),G419与ABS控制单元(J104)之间通过连接器T17f连接。用万用表检测G419与J104之间线 Trouble phenomenon A 2011 Audi A6L car, displacement 2.4 L, mileage of about 70,000 km. According to the customer, the car drives the anti-skid lamp alarm during driving. Fault analysis Connect VAS5052A, select “03” to enter the brake electronic control system, transfer 2 fault code (Figure 1), according to guide fault inquiry function, need to replace ESP sensor unit (G419) . Suspected line problems, so check the circuit diagram (Figure 2), G419 and ABS control unit (J104) through the connector T17f connection. Use a multimeter to test the line between G419 and J104