ROD ASSEM. 5D7793 - Caterpillar

Illustration 1 g02146144This diagnostic code is active when the Remote Control Module cannot communicate with the Transmission Control Module via the Cat Data Link.The possible causes for this diagnostic code are listed:
The data link wire has failed.
The Remote Control Module and the other machine ECMs are mismatched.System Response:The machine response is listed:
The service tool cannot detect the Remote Control Module.
Communication faults are indicated by Transmission Control ECM.Test Step 1. VERIFY THE HARDWARE AND THE SOFTWARE PART NUMBERS.
Verify that the following information is correct:
The part number of the flash software for the Remote Control Module
The part number of the flash software for the implement ECM
The part number of the Advisor ECM
The part number of the power train ECM
The part number of the engine ECMNote: Consult your Cat dealer for the correct part numbers of the flash software.Expected Result:All of the part numbers are correct.Results:
OK - All of the part numbers are correct. Proceed to Test Step 2.
NOT OK - All of the part numbers are not correct.Repair: Acquire the correct software and update the ECM with the incorrect flash file installed. See Troubleshooting, "Electronic Control Module (ECM) - Flash".STOPTest Step 2. INSPECT THE HARNESS CONNECTIONS.
Turn the disconnect switch to the OFF position.
Inspect all harness connections that are related to the Cat Data Link. Ensure that the connectors are clean and tight.
Check the connectors for proper mating. Ensure that all the seals are present and in place.
Check the harness for signs of damage or abrasion.
Check the wires at the connector. Ensure that the wires are secured tightly into the connector. Take care not to pull the wire out of the connector.
Check the exposed wires at the connectors for nicks or signs of abrasion.
Check for moisture inside the connector.
Check the connectors for dirty contacts or corroded contacts.
Check each pin and each socket of the remote harness connectors and the machine harness connectors. Ensure that the contacts are properly installed. The contacts should mate correctly when the two pieces of the connector are placed together. Expected Result:The remote harness connectors and the machine harness connectors are tight and free of corrosion.Results:
OK - The harness connectors are tight and free of corrosion. Proceed to Test Step 3.
NOT OK - The harness connectors are in need of repair.Repair: Repair the harness or replace the harness.STOPTest Step 3. CHECK FOR SHORTS TO GROUND.
The disconnect switch remains in the OFF position.
Disconnect the machine harness connectors from all electronic control modules that use the Cat Data Link.
At the machine harness for the Remote Control Module, measure the resistance between return ground and connector contacts 4 (wire 893-GN(Green)) and 5 (wire 892-BR(Brown)) of the