某款发动机进入及起动许可控制系统故障诊断与排除  

Engine Entry and Start Clearance Control System Fault Diagnosis and Troubleshooting

作　　者：钟慧多 Zhong Hui-duo(Guangdong Province south of the Lingnan industry and commerce first Technician College,College of Automotive Engineering,Guangdong Guangzhou 510800)

机构地区：[1]广东省岭南工商第一技师学院,汽车学院,广东广州510800

出　　处：《内燃机与配件》2024年第11期101-103,共3页Internal Combustion Engine & Parts

摘　　要：一台2016款某品牌汽车无钥匙进入系统功能失效且无法起动发动机,根据故障现象,结合该车型进入及起动许可控制系统的相关电路图分析,对J518进入及起动许可控制单元的相关引脚、J519的T73A插头、起动继电器J907、J764提供的起动信号、J764的插头问题和J764控制单元进行检测诊断,逐步缩小故障范围,精准定位故障点是J519的T73A插头的47号端子和J764插头的12号端子存在铜绿,清理干净端子的铜绿,装复配件,重新试车,无钥匙进入系统功能恢复,发动机能正常起动。The keyless entry system of a 2016 car of a certain brand fails to function and the engine cannot be started.According to the fault phenomenon,combined with the relevant circuit diagram analysis of the entry and start permit control system of this model,Test and diagnose the related pins of the J518 entry and start permit control unit,the T73A plug of J519,the start relay J907,the start signal provided by J764,the plug problem of J764 and the J764 control unit,and gradually reduce the fault range.Precisely locate the fault point is the patina on terminal 47 of the T73A plug of J519 and terminal 12 of the J764 plug.Clean the patina on the terminal,install the accessories,and restart the test,the keyless entry system function is restored,and the engine can start normally.

关 键 词：无钥匙进入系统功能失效 发动机起动 插头 铜绿 

分 类 号：TK428[动力工程及工程热物理—动力机械及工程]