SPRING AS-GAS 2072035 - Caterpillar

diagnostic code:
Is recorded when the VIMSTM Main ECM cannot communicate with the Engine ECM over the Cat® data-link.
Indicates failed or intermittent VIMSTM operations that are related to the Engine ECM. Note: This code can be generated when the Engine Fan Control is off. Verify that the Engine Fan Control is on. The Engine Fan Control can be accessed in Engine Configuration Parameters with Caterpillar® Electronic Technician (Cat® ET).
VERIFY HARDWARE AND SOFTWARE
Verify that the part numbers of the following are correct:
VIMS Main ECM
VIMS configuration software
Engine ECM
Engine ECM flash softwareNote: Consult the product business unit for the correct configuration software part numbers.Expected Result: All part numbers are correct. Results:
OK - All part numbers are correct. Proceed to Step 2.
NOT OK - All part numbers are not correct. Install the correct ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace".Flash the correct configuration software. See Testing and Adjusting, "Electronic Control Module (ECM) - Flash Program".STOP.
INSPECT THE HARNESS
Turn off the keyswitch and the disconnect switch.
Inspect the connectors, pins, and sockets for the following:
Cleanliness
Security
Proper mating
Seal condition
Moisture
Corrosion
Inspect the wires at the connector for the following:
Security
Nicks
AbrasionNote: Take care not to pull the wire out of the connector.
Inspect the harness for the following:
Damage
Abrasion
KinksExpected Result: The harness is in good condition. Results:
OK - The harness is in good condition. Proceed to Step 3.
NOT OK - The harness is not in good condition. Repair or replace the harness. STOP.
CHECK FOR SHORTS TO GROUND The keyswitch and