CAP-BEARING 1933063 - Caterpillar

Use this procedure to solve communication problems between Caterpillar Electronic Technician (ET) and the Electronic Control Module (ECM). Cat ET must communicate with the ECM in order to service the engine fully.There is a "POWER" indicator on the communication adapter that indicates that the communication adapter is receiving power. An indicator on the communication adapter indicates that communication is occurring on the data link. Cat ET displays a message if Cat ET cannot communicate with the data link.The following conditions can cause a communication problem:
Cat ET
Communication adapter and/or cables
Configuration for the communications adapter
Electrical power supply to the service tool connector
Cat Data LinkThis procedure determines the root cause of failure to communicate on the data link.
Table 1
Troubleshooting Test Steps Values Results
1. Verify that the Newest Version of Cat ET is Being Used
A. Check the version of Cat ET. Cat ET must be the newest version.
Cat ET is the most current version.
Result: Cat ET is the most current version. Attempt to establish communication. Continue with this procedure if the communication adapter does not communicate.
Result: Cat ET is an old version.
Download the newest version of Cat ET.
Attempt to establish communication. Continue with this procedure if the communication adapter does not communicate.
2. Verify that the Correct Communication Adapter and Cables are Being Used
A. Refer to Troubleshooting, "Electronic Service Tools" in order to determine the correct communication adapter and cables.
The correct communication adapter and cables are used.
Result: The correct communication adapter and cables are being used. Attempt to establish communication. Continue with this procedure if the communication adapter does not communicate on the data link.
Result: An incorrect communication adapter or cable was being used.
Connect the correct communication adapter or cable. Refer to Troubleshooting, "Electronic Service Tools", if necessary. Attempt to establish communication. Continue with this procedure if the communication adapter does not communicate on the data link.
3. Verify that Cat ET is Configured Correctly
Cat ET must be configured correctly in order to communicate. Perform the following procedure:
A. Click on the "Utilities" menu.
B. Click on the "Preferences" menu.
C. Select the "Communications" tab.
D. Verify that "Caterpillar Communications Adapter II (Serial IP)" is selected.
If "Caterpillar Communications Adapter II (Serial IP)" is not an option for selection, the firmware for the communications adapter must be updated. Perform the following procedure:
Update the firmware of the communication adapter's by using the "Comm Adapter II Toolkit". Then, select the "Caterpillar Communications Adapter II (Serial IP)" option.
Continue with this procedure.
E. Check for any hardware that is utilizing the same port as the communications adapter. If any devices are configured to use the same port, exit or close the software programs for that device.
The most commonly used port is "COM 1".
F. Click "OK".
Cat ET must reconnect in order for any changes to be used. Electronically disconnect Cat ET if changes were made to any of the settings for communications. Electronically connect Cat ET. Attempt to establish communication. Observe the indicator on the communications adapter.
Cat ET communicates.
Result: Cat ET communicates.
Result: Cat ET does not communicate. The "POWER" indicator is not illuminated. Proceed to