COMPRESSOR GP 5364162 - Caterpillar

Illustration 1 g00658439
Schematic of the CATdata link circuit This diagnostic function is recorded when the "VIDS ECM " is unable to communicate with the engine ECM through the CAT data link.System Response:This results in failed "VIDS operations" that are related to the engine ECM. The "VIDS operations" may function intermittently.Test Step 1. VERIFY THE HARDWARE AND THE SOFTWARE PART NUMBERS.
Verify that the following information is correct:
The part number of the "VIDS configuration software"
The part number of the "engine ECM flash software"
The part number of the "VIDS ECM"
The part number of the engine ECM Note: Consult the Business Unit that produces the product for the correct part numbers of the configuration software or refer to the Systems Operation, "VIDS Electronic Control Module" section of this manual for the part numbers of the VIDS software. Expected Result:All part numbers are correct. Results:
OK - All part numbers are correct. Proceed to test step 2.
NOT OK - All part numbers are NOT correct. Repair: The installed "VIDS ECM" or the engine ECM has the wrong part number or the incorrect configuration software is installed. Replace the incorrect "VIDS ECM" or the engine ECM with a module that has the correct part number. Flash the correct configuration software. See the Testing and Adjusting, "Flash Programming"section of this manual. Stop.Test 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. Make sure that the connectors are clean and tight.
Check the connectors for proper mating.
Check the wires at the connector.
Check each wire for nicks or signs of abrasion in the insulation.
Check for moisture at the connector.
Check the connectors for dirty contacts or corroded contacts.
Check each pin and each socket of the machine harness connectors. 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 OK - The machine harness connectors are in need of repair.Repair: Repair the machine harness or replace the machine harness. Stop.Test Step 3. CHECK FOR SHORTS TO GROUND
The disconnect switch remains in the OFF position.
Disconnect the machine harness from all electronic control modules that use the CATdata link.
At the machine harness for the "VIDS ECM", measure the resistance between frame ground and connector contacts J1-6 (wire 893-GN) and J1-7 (wire 892-BR) of the CAT data link circuit. Expected Result:The resistance is greater than 5000 ohms. Results:
OK - The resistance is greater than 5000 ohms. The harness circuit resistance is correct. Proceed to test step 4.
NOT OK - The resistance is less than 5000 ohms. The machine harness has failed. Repair: There is a short between frame ground and the CAT data link circuit in the machine harness. Repair the machine harness or replace the machine harness. Stop.Test Step 4. CHECK FOR SHORT TO +BATTERY
The disconnect switch remains in the OFF position.
All related electronic control modules remain disconnected from the machine harness.
At the machine harness connector for the "VIDS ECM",