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案例1故障现象一辆2012款奥迪A6L车,配备2.5 L CLXA发动机,累计行驶里程为7 004 km。客户反映组合仪表上的变速器故障灯报警,同时仪表信息中心显示“变速箱故障,可继续行驶”。故障诊断及排除接车后,确认故障现象,属实。用VAS 5052A进入02-变速器控制单元,读取的故障代码有:P1891 00,其含义为Tiptronic信号线不可信信号(被动/偶发);P1890 00,其含义为Tiptronic信号线电气故障(被动/偶发)。查阅ELSA和自学手册得知,Tiptronic升挡开关
Case 1 Symptom A 2012 Audi A6L with a 2.5 L CLXA engine has a cumulative mileage of 7 004 km. The customer reflects the transmission fault lamp alarm on the combination meter and the dashboard shows “Transmission failure, drive on”. Fault diagnosis and troubleshooting After the car, confirm the symptoms, is true. The VAS 5052A is used to enter the 02-Transmission Control Unit. The error code read is: P1891 00, which means that the Tiptronic signal line is not trusted (passive / sporadic); P1890 00, which means that the Tiptronic signal line is electrically defective (passive / sporadic ). Check ELSA and self-study manual that, Tiptronic up shift switch