CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Caterpillar


Wiring Harness (Short Circuit) - Test

Usage:

CX31 B3X
短路是一种可以导致意外电流的电路故障。 通常,短路是指绕过负载电路。 例如,行动指示灯电路导线之间短路会在导线中产生过大电流,但行动指示灯上却测量不到电流。 指示灯短路。 正常电路中的电阻值可能会发生变化,但是特定电路与其它无关电路之间的电阻值应始终大于 5 欧姆。 下述步骤将说明短路测试:

参考: 有关完整的电气示意图,请参阅正在维修的机器的电气系统示意图。

测试是否存在短路。

  1. 确定可疑电路中的接头和导线编号。 使用机器的电气系统示意图检查电路。

  2. 将钥匙起动开关和断路开关转到断开位置。

  3. 从配线线束上断开部件和 ECU。

  4. 在 ECU 机器线束接头可疑导线触点上放上一支万用表表笔。

  5. 使用另一支万用表表笔检查 ECU 接头中的所有其它触点与机架接地之间的电阻。

    理想结果:所有电阻测量值都大于 5000 欧姆。

    正常 - 所有电阻测量值都应大于 5 欧姆。 线束电路正常。

    停止。

    异常 - 电阻小于 5 欧姆。 机器线束中存在短路。 可疑导线与最低电阻测量值的导线之间短路。

    修理:修理或更换机器线束。

    停止。

Caterpillar Information System:

CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Wiring Harness (Open Circuit) - Test
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Speed Sensor - Replace
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Electronic Control Unit - Replace
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Electronic Control Unit - Flash Program
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Electronic Control Unit - Configure
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Electrical Connector - Inspect
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Transmission, SPN 168 - FMI 4
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Transmission, SPN 168 - FMI 3
C280 Marine Auxiliary Engines Replacing the ECM
C27 and C32 Engines for Caterpillar Built Machines Speed/Timing Sensor
C280 Marine Propulsion Engines Customer Parameters Worksheet
C13, C15, and C18 Generator Set Engines Turbocharger Outlet Pressure Sensor
3516 Generator Set Engine Governor - Woodward 2301A Speed Control
Inspection and Salvage of Hydraulic Cylinder Components {7562} Inspection and Salvage of Hydraulic Cylinder Components {7562}
C-9 Industrial Engine Fuel Filter Base
C9 Industrial Engines Fuel Filter Base
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Connector Locations
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System Diagnostic Capabilities
CX28, CX31 and CX35 On-Highway Transmissions Power Train Electronic Control System General Information
TH31-C9I, TH31-C9P, TH31-C9T, TH35-C11I, TH35-C13I, TH35-C13T, TH35-C15I and TH35-C15T Petroleum Power Train Packages and TH31-E61 and TH35-E81 Petroleum Transmissions Power Train Electronic Control System Service Tools
C7 and C9 On-Highway Engines Emissions Parameters
C9 Industrial Engines Fuel Filter Base
3508C, 3512C and 3516C Marine Engines Alternator - Remove and Install
3508C, 3512C and 3516C Marine Engines Alternator Mounting Group - Remove and Install
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.