故障现象一辆2008款林荫大道2.8 L车,搭载L。P1发动机,因防盗报警器经常无缘无故报警而进厂检修。故障诊断接车后首先验证故障,故障确实存在。此外,在检修中发现在所有车门均关闭的情况下,仪表板上的车门未关指示灯有时延迟关闭,有时常亮(图1)。根据以往的维修经验,首先检查两后车门线束连接器X336和X337的情况,发现连接器X336有进水腐蚀的痕迹(图2),然而在对X336进行处理并装复后,故障依旧。看来该车的故障还有其他方面的原因。 Symptoms A 2008 Boulevard 2.8 L car, equipped with L. P1 engine, due to burglar alarm often for no reason into the factory inspection and maintenance. Troubleshooting After the car first verify the fault, the fault does exist. In addition, during maintenance, it was found that the door unlit indicator on the dash was sometimes delayed off and sometimes on (Figure 1) with all doors closed. According to the previous maintenance experience, first check the two rear door harness connector X336 and X337 situation and found connector X336 traces of water corrosion (Figure 2), however, after the X336 is processed and installed, the fault still. It seems the car’s failure there are other reasons.