ALTERNATOR 3218927 - Caterpillar

Illustration 1 g01457829
Schematic of the CAT Data Link circuitThis diagnostic code is recorded when the VIMS ECM receives information from the transmission ECM and this information is NOT correct.Note: Other related diagnostic codes may cause this diagnostic code. Check for other related diagnostic codes.System Response:Information for the Transmission ECM is not available over the CAT data link.Test Step 1. VERIFY THE HARDWARE AND THE SOFTWARE PART NUMBERS.
Verify whether the following part numbers are correct.
Software part number for the transmission ECM
Software part number for the VIMS ECMExpected Result:Consult the Business Unit that is producing the product for the correct configuration for the machine.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. See Testing and Adjusting, "Electronic Control Module (ECM) - Flash Program".STOPTest 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 the connectors are free of corrosion. Proceed to Test Step 3.
NOT OK - The machine harness connectors require repair.Repair: Repair the harness or replace the harness. STOPTest Step 3. CHECK FOR ADDITIONAL RELATED DIAGNOSTIC CODES.
Ensure that all electronic control modules that use the CAT data link are connected.
The disconnect switch and the key start switch remain in the OFF position.
Acknowledge any 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 related 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 the CID 0296 FMI 02. If the CID 0296 FMI 02 remains, perform the diagnostic code procedure again.STOPTest Step 4. CHECK FOR AN OPEN HARNESS.
The disconnect switch remains in the OFF position.
All related electronic control modules remain disconnected from the machine harness.
Check the continuity of the data link circuit in the machine harness.
Perform the following measurements:
Table 1
Module     Contact     Wire    
Transmission ECM     J1-20     892-BR    
VIMS ECM     J1-6     892-BR    
Table 2
Module     Contact     Wire    
Transmission ECM     J1-10     893-GN    
VIMS ECM     J1-7     893-GN    Expected Result:The resistance measures less than 5 ohms.Results:
OK - The resistance measures less than 5 ohms. The data link circuit