小松发动机CRI_140 PP_Presentation：ENG05.2故障诊断

1、故障代码,Section 5,处理控制器的高压回路,控制器对喷射嘴的控制电压是 (110 130V) 因此从控制器到喷射嘴的回路都是高压的回路. 回路中只有在发动机运转中才是高压的，当发动机停止时不带高压。 直接接触高压回路非常危险，因此检查前要注意下面的警示标志,处理控制器的高压回路,1. 有关高压回路的相关接头 控制器接头: CN6, CN7 中间接头: EC1 喷射嘴接头: IJ1, IJ2, IJ3, IJ4, IJ5, IJ6 喷射嘴上的连接线（缸盖里面) 2. 每次断开或接上接头时，都要把起动开关置于 OFF 3. 如果连有 T 分岐接头进行故障分晰时，千万不能打开发动机 *如果动

2、开关，只能 ON 或 OFF ，千万不能起动发动机,故障代码,ECM -错误码- 非当前码,ECM -错误代码 当前码,故障代码,故障代码显示 发动机控制器用两位数显示发动机出现的故障. 当起动开关ON 时，显示 88, 然后显示 E 和两位数字码重复显示故障. 如果有多个故障，则按顺序一遍一遍重复显示 为防止读错，数字与字母显示如下 数字: 0 1 2 3 4 5 6 7 8 9 字母: A b C d E 当要重新演示故障或故障修复后，在起动开关ON 时，把接头CN4 的第4脚接地。-,故障代码表,Click on Code for Troubleshooting Steps,Page t

3、wo of Codes for Troubleshooting,故障代码表,Click on Code for Troubleshooting Steps,Page one of Codes for Troubleshooting,E-1 Error code E-1b Abnormality in NE revolution sensor system,Return To Table of Error Codes,E-2 Error code E-1C Abnormality in G revolution sensor system,Return To Table of Error Cod

4、es,E-3 Error code E-20 Abnormality in model selection system,Return To Table of Error Codes,E-4 Error code E-22 Overrun,Return To Table of Error Codes,E-5 Error code E-23 Overheat,Return To Table of Error Codes,E-6 Error code E-24 Drop in oil pressure,Return To Table of Error Codes,E-7 Error code E-

5、30 Abnormality in idling validation signal system,Return To Table of Error Codes,E-7 Error code E-30 Abnormality in idling validation signal system,Return To Table of Error Codes,E-8 Error code E-31 Abnormality in throttle sensor system,Return To Table of Error Codes,E-8 Error code E-31 Abnormality

6、in throttle sensor system,Return To Table of Error Codes,E-8 Error code E-31 Abnormality in throttle sensor system,Return To Table of Error Codes,E-9 Error code E-34 Abnormality in water temperature high-temperature sensor system,Return To Table of Error Codes,E-9 Error code E-34 Abnormality in wate

7、r temperature high-temperature sensor system,Return To Table of Error Codes,E-10 Error code E-36 Abnormality in oil pressure switch system,Return To Table of Error Codes,E-10 Error code E-36 Abnormality in oil pressure switch system,Return To Table of Error Codes,E-11 Error code E-3C Abnormality in

8、boost pressure sensor system,Return To Table of Error Codes,E-11 Error code E-3C Abnormality in boost pressure sensor system,Return To Table of Error Codes,E-12 Error code E-3d Abnormality in fuel temperature sensor system,Return To Table of Error Codes,E-12 Error code E-3d Abnormality in fuel tempe

9、rature sensor system,Return To Table of Error Codes,E-13 Error code E-50 Abnormality in preheating relay connecting point system,Return To Table of Error Codes,E-14 Error code E-51 Abnormality in preheat relay coil system,Return To Table of Error Codes,E-15 Error code E-54 Short circuit in starting

10、switch C system,Return To Table of Error Codes,E-16 Error code E-56 Power source system abnormality 1,Return To Table of Error Codes,E-16 Error code E-56 Power source system abnormality 1,Return To Table of Error Codes,E-17 Error code E-57 Power source system abnormality 2,Return To Table of Error C

11、odes,E-18 Error code E-5A Abnormality in fuel injection quantity control switch signal,Return To Table of Error Codes,E-19 Error code E-6A Abnormality in water temperature low-temperature sensor system,Return To Table of Error Codes,Return To Table of Error Codes,E-19 Error code E-6A Abnormality in

12、water temperature low-temperature sensor system,E-20 Error code E-70 Excess current in fuel supply pump PCV1 system,Return To Table of Error Codes,E-21 Error code E-71 Excess current in fuel supply pump PCV2 system,Return To Table of Error Codes,E-22 Error code E-74 Disconnection in fuel supply pump

13、 PCV1 system,Return To Table of Error Codes,E-23 Error code E-75 Disconnection in fuel supply pump PCV2 system,Return To Table of Error Codes,E-24 Error code E-77 Abnormality in common rail fuel pressure sensor system,Return To Table of Error Codes,E-24 Error code E-77 Abnormality in common rail fue

14、l pressure sensor system,Return To Table of Error Codes,E-25 Error code E-79 Common rail fuel high pressure abnormality 1Error code E-7A Common rail fuel high pressure abnormality 2,Return To Table of Error Codes,E-26 Error code E-7b Fuel supply pump non-force feed 1Error code E-7C Fuel supply pump

15、non-force feed 2,Return To Table of Error Codes,Return To Table of Error Codes,E-26 Error code E-7b Fuel supply pump non-force feed 1Error code E-7C Fuel supply pump non-force feed 2,E-27 Error code E-7d Abnormality in common rail fuel pressure,Return To Table of Error Codes,Go to Troubleshooting of

16、 error codes E-79 and E-7A,E-28 Error code E-80 Defective controller,Return To Table of Error Codes,E-29 Error code E-81 Disconnection in No. 1 fuel injector system,Return To Table of Error Codes,E-30 Error code E-82 Disconnection in No. 2 fuel injector system,Return To Table of Error Codes,E-31 Err

17、or code E-83 Disconnection in No. 3 fuel injector system,Return To Table of Error Codes,E-32 Error code E-84 Disconnection in No. 4 fuel injector system,Return To Table of Error Codes,E-33 Error code E-85 Disconnection in No. 5 fuel injector system,Return To Table of Error Codes,E-34 Error code E-86

18、 Disconnection in No. 6 fuel injector system,Return To Table of Error Codes,E-35 Error code E-8A Short circuit in No. 1, No. 2, No. 3 fuel injector system,Return To Table of Error Codes,E-35 Error code E-8A Short circuit in No. 1, No. 2, No. 3 fuel injector system,Return To Table of Error Codes,E-35 Error code E-8A Short circuit in No. 1, No. 2, No