LINK-TRACK MASTER 7T6948 - Caterpillar

the diagnostic code. See Troubleshooting, "Diagnostic Capabilities" for more information. Stop.
RED LED ALWAYS ON - The red LED is always ON. The Product Link has failed. Repair: Replace the Product Link. Stop.Test Step 2. ACCESS THE PRODUCT LINK THROUGH THE ELECTRONIC TECHNICIAN.
Connect the Electronic Technician to the machine.
Verify that the ECM (Product Link) is available.Expected Result:The ECM (Product Link) is available.Results:
OK - The ECM (Product Link) is available. Proceed to Test Step 3
NOT OK - The ECM (Product Link) is not present in the Electronic Technician screen. Repair: Verify that the wiring for the Product Link has been installed correctly. See Systems Operation, "System Installation". Near the end of the installation procedure, Step 13 checks the wiring with a multimeter. If the ECM (Product Link) is not available, see Troubleshooting, "Electronic Service Tool Does Not Communicate with ECM - Troubleshoot" Stop.Test Step 3. VERIFY THAT THE PRODUCT LINK MODULE IS CONFIGURED PROPERLY.
Go to the "Configuration" screen. See Testing and Adjusting, "Installation Parameters - Configure" for more information.
Verify that the "PLM Enable Status" is configured as "Enabled".
Verify that the "Dealer Identification Code" is configured with the correct code for the Dealer.
Verify that the "DBS Machine Make Code" is configured correctly.
Verify that the "Machine Serial Number" is configured with the correct machine serial number.
Verify that "Maintenance Mode" is configured as "Off".Expected Result:All settings are correct.Results:
OK - The Product Link is configured correctly. Proceed to Test Step 4
NOT OK - The Product Link is not configured correctly. Repair: Correct the configuration of the Product Link. The "PLM Enable Status" and "PLM Registration Status" can be verified in the "ET Status Group 2". Stop.Test Step 4. VERIFY THAT THE PRODUCT LINK MODULE HAS NOT BEEN TURNED OFF.
Go to "ET Status Group 2 - PLM Operational Status".
Verify that " the Possible Device Power Disconnection" is labelled as "No".Expected Result:"Possible Device Power Disconnection" is labelled as "No".Results:
OK - The "Possible Device Power Disconnection" is labelled as "No". The Product Link has operated since successfully transmitting the last report. Proceed to Test Step 5.
NOT OK - The "Possible Device Power Disconnection" is labelled as "Yes". The Product Link has been disconnected from power and transmissions have been prevented. This could explain the failure to get any messages. Proceed to Test Step 5.Test Step 5. VERIFY THAT THE PRODUCT LINK MODULE HAS BEEN IN AN AREA OF BLOCKED COMMUNICATIONS.
Go to "ET Status Group 2 - PLM Operational Status".
Verify that the "Possible Periods of Communications Blockage" is "No".Expected Result:The Electronic Technician shows that the "Possible Periods of Communications Blockage" is "No".Results:
OK - The Product Link has seen satellites since the transmission of the last report. Verify that the machine has a clear view of the sky. Proceed to Test Step 6.
NOT OK - The Product Link has experienced blocked communications. Transmissions have been prevented. This could explain the failure to get any messages. Verify that the machine has a clear view of the sky. Proceed to Test Step 6.Test Step 6. VERIFY THAT THE PRODUCT LINK IS