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故障现象一辆2016年产高尔夫A7车,行驶里程约为4 000 km,因胎压报警灯点亮而进厂检修。据驾驶人反映,该车经常出现胎压报警灯点亮的现象,每次对胎压报警灯进行复位后,行驶约100 km,胎压报警灯又会再次点亮。故障诊断接车后试车验证故障,接通点火开关起动发动机,仪表盘上的胎压报警灯常亮。测量两前轮的胎压,均为2.3 bar(1 bar=100 kPa),测量两后轮的胎压,均为2.8 bar。经过测量可以确认四轮胎压均在标准范围内。目视
Symptoms A 2016 Golf A7 car, mileage of about 4 000 km, due to the tire pressure alarm light into the factory overhaul. According to the driver reflected that the car often tire pressure alarm lights lit phenomenon, each time the tire pressure alarm light reset, about 100 km, tire pressure alarm light will be lit again. Fault diagnosis After the test car to verify the fault, turn the ignition switch to start the engine, tire pressure gauge on the dashboard lights constantly. The tire pressures of both front wheels were measured at 2.3 bar (1 bar = 100 kPa) and the tire pressures of both rear wheels were measured at 2.8 bar. After the measurement can confirm the four tire pressure are within the standard range. Visual