14M3 Motor Grader Electrical System Troubleshooting Caterpillar


Service Tools

Usage:

14M-3 E9S
The following service tools and supplies are used in electrical system maintenance.

Table 1
Service Tools 
Part Number  Part 
JERD2129  Caterpillar® Electronic Technician 
317-7484  Communication Adapter Gp 
257-9140  Digital Multimeter 
146-4080(1)  Digital Multimeter Gp 
8T-3224  Needle Tip 
7X-1710  Multimeter Probe 
8T-8726  Adapter Cable As 
6V-3000  Connector Repair Kit 
190-8900  Connector Repair Kit 
175-3700  Connector Repair Kit 
147-6456  Wedge Removal Tool 
370-4617  Cable As 
185-3996  Thread Lock Compound 
1P-0810  Electrical Tape 
1U-5804  Crimp Tool 
327-8981  Cable As 
5P-7277  Voltage Tester 
7X-1700  Communication Adapter Gp 
8T-0065  Silicone Sealant 
8T-0500  Continuity Test Light 
(1) This multimeter can use an RS232C cable to connect to a laptop computer or Dataview tool gp for troubleshooting.

Note: Caterpillar® Electronic Technician (Cat® ET) service tool is designed to run on a personal computer (PC) under Microsoft Windows

To use Cat ET, the following materials must be ordered:

  • Special Publication, JERD2124, "ET Single Use Program License"

  • Special Publication, JEHP1026, "Information and Requirements Sheet"

  • Special Publication, JERD2142, "Data Subscription"

The Special Publication, JEHP1026, "Information and Requirements Sheet" lists the required hardware and the features of Cat ET. For instructions on servicing Sure Seal connectors, see Special Instruction, SMHS7531. For instructions on servicing the Deutsch DT type connectors, see Special Instruction, SEHS9615.

Cat ET is not required to view or clear the diagnostic codes. However, the process of determining the diagnostic codes is easier with Cat ET. Cat ET may also display the history and parameter status of a diagnostic code.

Cat ET is used to communicate to the electronic control module (ECM) over the data link by connecting to the machine diagnostic connector. For more information about connectors, see Troubleshooting, "Electrical Components and Connector Locations" and the machine Electrical Schematic.

For instructions on servicing Sure Seal connectors, see Special Instruction, SMHS7531. For instructions on servicing Deutsch connectors, see Special Instruction, SEHS9615.

Use a calibrated digital multimeter to test continuity and voltage. See the instructions that are provided in the multimeter manual to operate the multimeter safely. The 7X-1710 Multimeter Probes are used to take measurements at a connector without separating the connections. The probe cables are pushed into the back of the connector along the wire. The 8T-8726 Adapter Cable has a three-pin breakout and is used for sensor circuit measurements.

Note: Use a 8T-0500 Continuity Tester and a 5P-7277 Voltage Tester to test a harness. Do not use a 8T-0500 Continuity Tester or a 5P-7277 Voltage Tester for electronic circuits.

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