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CAGE 7B0252 - Caterpillar

7B0252 CAGE Caterpillar parts CAGE
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Caterpillar 7B0252 CAGE

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Illustration 1 g01209160
Typical Cat Data Link connections
Note: The illustration for the Cat Data Link connections may not represent the connections for all components on all of the machines covered by this manual. Refer to the electrical system schematic for your machine in order to verify the Cat Data Link connections.This diagnostic code is recorded when the Brake ECM does not receive expected information from the VIMS ECM for a period of more than five seconds.System Response:This failure results in events that are logged against an ECM that can not be explained directly. The Brake ECM cannot communicate with the VIMS ECM or the ECM appears to communicate intermittently. 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 Brake ECM
The part number of the flash software for the VIMS ECM
The part number of the Brake ECM
The part number of the VIMS ECMNote: Consult your Caterpillar 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: The installed Brake ECM or the VIMS ECM have the wrong part number or the incorrect flash software is installed. Replace the incorrect Brake ECM or the VIMS ECM with a module that has the correct part number. Flash the correct software. See the Testing and Adjusting, "Electronic Control Module (ECM)-Flash Programming" section for additional information.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. Make sure 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 check each socket of 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 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. 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 Brake ECM, measure the resistance between frame ground and connector contacts J1-9 (wire 893-GN(Green)) and J1-3 (wire

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