雷克萨斯ES250车“车窗/天窗未关”提示功能失效

• 作 者: 陈杰
• 机 构: 南通文峰雷克萨斯汽车销售服务有限公司,
• 出 处: 汽车维护与修理
• 发表日期: 2017年06期
• 关键词: ES250 雷克萨斯 组合仪表 故障检测仪 功能失效 无故障代码 灯开关 车窗玻璃 发动机熄火 卡滞现象

故障现象一辆雷克萨斯ES250车,车主反映,将发动机熄火后,打开左前门,在没有完全关闭车窗或天窗时,组合仪表没有任何提示(图1a),正常情况下,组合仪表应提示“车窗/天窗未关”(图1b)。故障诊断用故障检测仪检测,主车身ECU、天窗ECU及4个车窗升降电动机内均无故障代码存储。检查左前门的门控灯开关,无卡滞现象。将电源模式切换至IG ON状态,操控天窗按钮,可以正常一键打开和关闭天窗;操控左前门上的主控开关及其他车门上的车窗玻璃

Symptom A Lexus ES250 car, the owner reflects the engine flameout, open the left front door, the car did not shut down the window or skylight, the combination of instruments without any hint (Figure 1a), under normal circumstances, the instrument should be instructed “ Window / Skylight ”(Figure 1b). Fault diagnosis detected by the fault detector, the main body ECU, sunroof ECU and four windows lift motor without fault code storage. Check the left front door gated light switch, no stuck phenomenon. The power mode is switched to the IG ON state, control the sunroof button, you can normally open and close the skylight; control the left front door on the main control switch and other windows on the glass