The Cat® Electronic Technician (Cat ET) service tool offers the following attributes:
- Used to troubleshoot a machine.
- Runs on a computer with Microsoft Windows.
- Not required to view or clear diagnostic codes.
- Makes determining diagnostic codes easier.
- Displays diagnostic code information, including history and parameter status.
- Communicates with electronic control modules (ECMs) over a data link.
- Requires the tools listed in Table 1.
The following service tools should be used to aid in troubleshooting the electrical system.
| Service Tools | |
| Part Number | Part |
| JERD2129 | Cat Electronic Technician (Cat ET) |
| Laptop Computer | |
| 7X-1710 | Multimeter Probe Group |
| 8T-8726 | Cable Assembly (Three Pin) (3-Pin Breakout) |
| 6V-3000 | Connector Repair Kit (Sure Seal) |
| 190-8900 | Connector Repair Kit (Deutsch) |
| 175-3700 | Connector Repair Kit Deutsch DT |
| One of the Following Adaptors | |
| 317-7484 | Communication Adapter Group |
| 349-1206 | Kit-Radio (Wireless CA3)(1) |
| 317-7492 | Kit-Radio (Wireless CA3)(2) |
| One of the Following Digital Multimeters | |
| 237-5130
257-9140 |
Digital Multimeter |
| 146-4080(3) | Digital Multimeter Group |
| (1) | EAME Only |
| (2) | NACD Only |
| (3) | This multimeter can use an RS232C cable to connect to a Laptop computer or Dataview tool gp for troubleshooting. |
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| Illustration 1 | g02615483 |
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Connections for the Communication Adapter 3 Gp and Cat ET The components that are needed to use the Communication Adapter Gp and Cat ET are listed: (1) Current version of Cat ET software (2) 317-7484 Communication Adapter 3 Gp (3) Service diagnostic cable (4) Cable | |
Reference: Refer to Special Publication, NEHS1032, "Communications Adapter 3".
Reference: Refer to Special Publication, NEHS1081, "317-7492 Wireless Radio"
Note: Cat ET is a software program that can be used on an IBM compatible personal computer.
To use Cat ET, order the following materials: Special Publication, JERD2124, "ET Single Use Program License", Special Publication, JEHP1026, "Information and Requirements Sheet" and Special Publication, JERD2142, "Data Subscription". The Special Publication, JEHP1026, "Information and Requirements Sheet" lists the required hardware and the features of the Cat ET.
Cat ET communicates to the components via Cat Data Link.
For instructions about the use of the digital multimeter, refer to Special Instruction, SEHS7734. The 7X-1710 Multimeter Probe measures the voltage at the connectors without disconnecting the connectors. The probe cables are pushed into the back of the connector along the wire. The 8T-8726 Adapter Cable has a breakout with three pins. The adapter cable is used for measurements in the sensor circuits.
One of the adapters listed in Table 1 is required to connect the computer to the machine.
Reference: For wireless adaptor instructions, see Special Publication, NEHS1081, "317-7492 Wireless Radio".
Reference: For Comm Adapter 3 instructions, see Special Publication, NEHS1032, "Communications Adapter 3".
Reference: See the following for connector information:
- For Locations: Troubleshooting, "Electrical Components and Connector Locations" and the machine Electrical Schematic
- For Sure Seal connector instructions, see Special Instruction, SMHS7531
- For Deutsch DT connectors instructions, see Special Instruction, SEHS9615
Use a calibrated digital multimeter to test continuity and voltage.
Reference: See the multimeter manual provided with the multimeter.
7X-1710 Multimeter Probes are used to measure voltage at a connector without separating the connection. The probe cables are pushed into the back of a connector along the wire.
The 8T-8726 Adapter Cable has a three pin breakout and is used for sensor circuit measurements.
Note: Caterpillar recommends the use of a 8T-0500 Continuity Tester and a 5P-7277 Voltage Tester to test a harness. Caterpillar does not recommend the use of a 8T-0500 Continuity Tester or a 5P-7277 Voltage Tester for electronic circuits.