故障现象一辆2015款长安马自达CX-5车,搭载2.5 L发动机和6速自动变速器,行驶里程约为1万km,因仪表盘上发动机故障灯和侧滑指示灯点亮而进厂检修。故障诊断接车后试车验证故障,接通点火开关起动发动机,仪表盘上的发动机故障灯和侧滑指示灯点亮(图1),正常情况下,在发动机起动着机后,这两个故障灯应该是熄灭的。经询问驾驶人并查阅该车的维修记录,确认车辆没有出过事故。 Fault phenomenon A 2015 Changan Mazda CX-5 car, equipped with 2.5 L engine and 6-speed automatic transmission, mileage of about 10000 km, due to the instrument panel on the engine fault light and skid indicator light and into the plant overhaul. Fault diagnosis After the test car to verify the fault, turn the ignition switch to start the engine, the dashboard engine fault light and skid indicator light (Figure 1), under normal circumstances, the engine starts the machine, these two faults The light should be off. After asking the driver and check the car’s maintenance records to confirm that the vehicle has not been an accident.