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故障现象一辆2013年产大众夏朗商务车。行驶里程约为23万km,因发动机故障灯异常点亮而进厂检修。故障诊断和排除据驾驶人反映。该车在正常行驶过程中,发动机故障灯突然点亮,但行驶并无异常。接车后试车验证故障,发动机故障灯确实常亮,但发动机起动正常,且运转平稳。连接VAS6150B读取故障代码,得到2个偶发的故障代码(图1)。用VAS6150B的引导性故障查询功能给出的方案进行检修。首先清洗节气门并做基本设定;接着仔细检查各进气管道,确认无泄漏;用万用表根据电路图分别检查了
Symptom A 2013 Volkswagen Sharan commercial vehicle. Mileage is about 230,000 km, because the engine fault light abnormal lighting into the factory overhaul. Trouble shooting and troubleshooting are reflected by the driver. The car in normal driving process, the engine fault light suddenly lit, but no abnormal traffic. After the car to test the vehicle to verify the failure, the engine fault light is indeed always on, but the engine starts normally, and stable operation. Connect the VAS6150B to read the error code and get 2 accidental error codes (Figure 1). Use VAS6150B guidance troubleshooting function given the program for overhaul. First clean the throttle and make the basic settings; Then carefully check the intake pipe to confirm no leakage; Check with the multimeter according to the circuit diagram