论文部分内容阅读
故障现象一辆福特翼虎C520 2.0车,累计行驶里程约为18 km,接通点火开关后仪表显示车道保持系统故障、低速安全系统不可用、泊车辅助故障、左侧盲区信息感应器故障请检修、右侧盲区信息感应器故障请检修、检修安全带提示系统和驾驶员预警系统故障等故障信息,同时发动机无法起动。故障诊断根据故障现象断开蓄电池,测量诊断连接器上高速网络端子6和端子14间的电阻,为60Ω,正常;测量中速网络端子3和端子11间的电阻,为60Ω,正常;测量中速网络电压为2.3 V和2.7 V,正常,而高速网络电压时常变化。根据检查结果可以确定高速网络存在故障。分析可能的原因有:上述仪表显示的模块故障,PCM故障,相关网络故障。用IDS进行检测,发现无法进入,通过PCM零件号进入
Fault phenomenon A Ford Maverick C520 2.0 car, the cumulative mileage of about 18 km, the ignition switch is turned on, the instrument shows the lane to maintain system failure, low-speed safety system is not available, parking assist fault, left blind spot information sensor fault please Overhaul, right blind spot information sensor fault Please repair, repair seat belt warning system and driver warning system fault and other failure information, at the same time the engine can not start. Fault Diagnosis Disconnect the battery according to the fault phenomenon and measure the resistance between the high-speed network terminal 6 and the terminal 14 on the diagnostic connector to 60Ω, normal; measure the resistance between the medium-speed network terminal 3 and terminal 11 to 60Ω, normal; Fast network voltage is 2.3 V and 2.7 V, normal, and high-speed network voltage changes from time to time. According to the inspection results, it can be determined that the high-speed network is faulty. Possible reasons for the analysis are: the above-mentioned module shows the module fault, PCM fault, related network fault. Detected with IDS, found unable to enter, through the PCM part number to enter