WASHER 4P3684 - Caterpillar

This diagnostic code is recorded when the implement ECM receives information from the monitoring system ECM and the information is NOT correct.The possible causes of this diagnostic code are listed:
A problem with the data link harness
The monitoring system is not operational
The monitoring system has not been programmed with the correct application softwareNote: Other related diagnostic codes may cause this diagnostic code. Check for other related diagnostic codes.System Response:If the ECM has never been flashed, all implement functions will be disabled. There is a 10 second delay before implement functions are active.Test Step 1. VERIFY THE HARDWARE AND THE SOFTWARE PART NUMBERS.
Verify whether the following part numbers are correct:
Software part number for the implement ECM
Software part number for the caterpillar monitoring systemNote: Consult the Business Unit that is producing the product for the correct configuration of the machine. Expected Result:All part numbers are correct.Results:
OK - All part numbers are correct. Proceed to Test Step 2.
NOT OK - All of the part number are NOT correct.Repair: One of the following modules may have the wrong part number and/or the software configuration is NOT correct: the implement ECM, the caterpillar monitoring system and the power train ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Flash Program". Stop.Test Step 2. INSPECT THE HARNESS CONNECTIONS.
Turn the key start switch and the disconnect switch to the OFF position.
Inspect the harness connections that are related to the Cat Data Link. Make sure that the connectors are clean and tight.
Check the mating of the connector.
Check the wires at the connector.
Check each wire for nicks and/or signs of abrasion in the insulation.
Check for moisture at the connector.
Check for dirty contacts and/or corroded contacts.
Check each pin and check each socket.Expected Result:The machine harness connectors are tight and free of corrosion.Results:
OK - The machine harness connectors are tight and free of corrosion. Proceed to Test Step 3.
NOT - The machine harness connectors require repair.Repair: Repair the harness or replace the harness. Stop.Test Step 3. CHECK FOR ADDITIONAL RELATED DIAGNOSTIC CODES.
Ensure that all electronic control modules that use the Cat Data Link are connected.
Turn the disconnect switch and the key start switch to the ON position.
Acknowledge and troubleshoot any active diagnostic codes that are currently displayed on the message center.
Verify that NO related diagnostic codes are present. Expected Result:No other diagnostic codes are present.Results:
OK - No other diagnostic codes are present. Proceed to Test Step 4.
NOT OK - Other related diagnostic codes are present.Repair: Exit this procedure and perform the other related diagnostic codes. Verify that the other related diagnostic codes are NOT present. Observe the status of CID 0967 FMI 09. If CID 0967 FMI 09 remains active, perform CID 0967 FMI 09 again. Stop.Test Step 4. CHECK FOR SHORTS TO GROUND.
Turn the disconnect switch and the key start switch to the OFF position.
Disconnect the machine harness from all electronic control modules that use the Cat Data Link.
At the machine harness for the implement ECM, measure the resistance between frame ground and the following data link circuits:
Contact