别克GL8轿车起动故障诊断与排除  

Diagnosis and Troubleshooting of Starting Failure for Buick Car GL8

作　　者：罗新闻[1] 王鹏[1] 王大鹏[1] 

机构地区：[1]中国人民解放军军需工业学院

出　　处：《汽车技术》2008年第6期55-58,共4页Automobile Technology

摘　　要：一辆配备有V型6缸、2.98L排量发动机的别克GL8轿车,出现无法起动现象。经检查发现,该车不能起动的主要原因是曲轴位置传感器7X信号丢失和点火钥匙中的电阻跌断。曲轴位置传感器提供的7X参照高信号不能正常提供导致动力控制模块无法提供点火及供油信号,点火钥匙中的电阻跌断导致识别模组接收不到信号,因此发动机无法起动。将线路重新连接后发现,点火钥匙该故障消除,发动机可正常起动。A Buick car GL8 equipped with a V-shaped six-cylinder,2.98 L engine can not start,the main reason are the loss of sensor 7 X signal of crankshaft position and resistance breakdown of ignition key.The 7X reference high signal provided by crankshaft position sensor can＇t be provided normally,thus the power control module （PCM）will not be able to provide ignition and fuel supply signals,and resistance breakdown in the ignition key prevents the identification module from receiving signals,so the engine failed to start. After connecting the wire,the engine can start normally.

关 键 词：轿车 起动 故障 

分 类 号：U463.6[机械工程—车辆工程]