This paper introduces the testing methods of the engine immobilizer system on LEXUS LS430,such as fault self-diagnosis,fault code diagnosis,fault sign diagnosis and voltage testing on power circuit and ECU terminal.

• 介绍凌志LS430汽车发动机止动系统的故障自诊断法、故障码诊断法、故障征兆诊断法以及电源电路和ECU端子电压检查方法。