论文部分内容阅读
故障现象一辆2010款科鲁兹轿车,VIN码为LSGPC54UXAF******,发动机故障灯常亮。故障诊断接车后连接故障检测仪,读取故障代码,只有一个历史故障代码:P0336——曲轴位置传感器性能。经向车主了解情况得知,发动机故障灯常亮前后行车无异常。检查了曲轴位置传感器的相关线路,未见异常,怀疑是偶发性故障,清除故障代码后,把车交客户开走。过了10多天客户又反映发动机故障灯常亮,接车后再次检查,发现故障与上次一样。决定再次仔细检查曲轴位置传感器的相关线路。首先将点火开关置于OFF位置,断开曲轴位置传感器的线束连接器,测量低电平参考电压电路端子和搭铁间的电阻,正常;将点火开关置于ON位,测量曲轴位置传感器电源端子和搭铁间的电压,为5 V,正
Symptoms A 2010 Cruze sedan, VIN code LSGPC54UXAF ******, the engine fault light is always on. Fault diagnosis Connect the fault detector after receiving the car, read the fault code, there is only a history of fault code: P0336 - crankshaft position sensor performance. The car owners to understand the situation that the engine fault light before and after driving lights without exception. Check the crankshaft position sensor related lines, no abnormalities, suspected sporadic failure, clear the fault code, the car to the customer drove away. More than 10 days after the customer also reflects the engine fault light is always on, check again after the car and found that the fault is the same as last time. Decided to again carefully check the crankshaft position sensor related lines. First, turn the ignition switch OFF. Disconnect the harness connector of the crankshaft position sensor and measure the resistance between the low-voltage reference circuit terminal and the ground strap. Set the ignition switch to the ON position to measure the position of the crankshaft position sensor power terminal And the voltage between the ground, for 5 V, positive