INDICATOR-CONV 1997952 - Caterpillar

Use this procedure to solve communication problems between the Cat® Electronic Technician (ET) and the applicable Electronic Control Module (ECM). Cat ET must communicate with the ECM on the "Cat Data Link" and on the J1939 data link in order to service the engine.Indicators on the communication adapter indicate that communication is occurring on a particular data link. The "J1939 / DeviceNet" indicator indicates that the communication adapter is communicating on the J1939 data link. The "J1708" indicator indicates that the communication adapter is communicating on the "Cat Data Link". Cat ET displays a message during the connection if Cat ET cannot communicate on both data links.The following conditions can cause a communication problem:
Incorrect communication adapter
Incorrect version of Cat ET
Incorrect firmware in the communication adapter
Incorrect configuration of Cat ET
A problem with electrical power to the communication adapter
A problem with electrical power to the engine ECM
A problem with the wiring for a data link
A problem with the electrical cables between the PC and the service tool connector
Table 1
Troubleshooting Test Steps Values Results
1. Determine the Communication Problem
Note: If an indicator other than the "POWER" indicator is illuminated when Cat® Electronic Technician (ET) is not communicating with an ECM, disconnect and reconnect the communication adapter.
Communication Problem
Result: Both indicators on the communication adapter are not flashing.
Proceed to Test Step 2.
Result: Cat ET indicates that the engine is serviced on both links.
Proceed to Test Step 2.
Result:Cat ET displays a message that indicates the firmware in the communication adapter does not support communication on both data links.
Proceed to Test Step 3.
Result: Cat ET displays an Error "#142 The interface hardware is not responding" message.
Proceed to Test Step 3.
Result:Cat ET displays a message that indicates that Cat ET cannot find an exact match for the software version in the ECM.
Repair: Update Cat ET to the latest available version.
Result: The power indicator is not illuminated.
Proceed to Test Step 5.
2. Verify that the Correct Communication Adapter is Being Used
A. A 317-7484 Communication Adapter Gp must be used to with a 370-4617 Cable As (USB) and a 457-6114 Cable As (Datalink Cable CA3) to communicate. The following communication adapters cannot be used because the communication adapters do not communicate over both data links:
- Wireless communication adapter
- 7X-1701 Communication Adapter As
B. Determine the communication adapter that is being used.
Communication Adapter
Result: An incorrect communication adapter is being used.
Repair: Connect a correct communication adapter. Refer to Troubleshooting, "Electronic Service Tools", if necessary.
Attempt to establish communication. Continue with this procedure if the communication adapter does not communicate on both data links.
Result: A correct communication adapter is being used. However, the "Power" indicator is not illuminated.
Proceed to Test Step 5.
Result: A correct communication adapter is being used. The "Power" indicator is illuminated.
Proceed to Test Step 4.
3. Check the Version of the Firmware for the Communication Adapter
The version of the firmware for the communication adapter must be "1.23.54" or higher.
Refer to Special Instruction, REHS8170 for instructions on how to update the firmware in the Comm Adapter III.
A. Electronically disconnect Cat