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BOLT 3C8387 - Caterpillar

3C8387 BOLT Caterpillar parts
Alternative (cross code) number:
Caterpillar 3C8387 BOLT
Weight: 0.01 pounds 0 kg.

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This diagnostic code is recorded when the transmission ECM does not receive the expected information from the engine ECM.The possible causes of this diagnostic code are listed:
The software that is installed on the engine ECM is incorrect.
The software that is installed on the transmission ECM is incorrect.Note: Ensure that the CID 0590 FMI 12 for the Engine ECM is active.System Response:As a result of this diagnostic code, some features of the transmission ECM may not work correctly.Test Step 1. VERIFY THE SOFTWARE PART NUMBERS.
Connect the ET to the machine.
Start the ET software and proceed to the ECM summary screen.
Verify that the following software part numbers are correct:
The transmission ECM
The engine ECMNote: Consult the business unit that produces the product for the correct part numbers for the software.Expected Result:All of the software part numbers are correct.Results:
OK - All of the software part numbers are correct. Proceed to test step 2.
NOT OK - One or more of the software part numbers are NOT correct.Repair: Flash the correct software. See Testing and Adjusting, "Electronic Control Module (ECM) - Flash Program".STOPTest Step 2. VERIFY THAT THE MACHINE MODEL IS CORRECT.Note: The information for the harness code plug for the Caterpillar Monitoring System is sent to the transmission ECM via the CAT data link. The harness code plug determines the appropriate sales model. Therefore, an incorrect harness code can cause incorrect diagnostics to be logged.
The ET will remain connected to the machine.
Verify that the machine model that is reported from the ECM summary screen agrees with the actual transmission model. Expected Result:The transmission model matches.Results:
OK - The transmission model matches. Proceed to test step 3.
NOT OK - The transmission model does NOT match. The harness code of the Caterpillar Monitoring System may be incorrect.Repair: Correct the harness code of the Caterpillar Monitoring System.If conditions are not resolved proceed to test step 3.Test Step 3. VERIFY THAT THE DIAGNOSTIC CODE IS PRESENT.
The ET will remain connected to the machine.
Select the transmission ECM from the ECM summary screen.
Check whether CID 0590 FMI 12 is present. Expected Result:The CID 0590 FMI 12 is NOT present.Results:
OK - The diagnostic code is NOT present. The initial diagnostic code was probably caused by a poor electrical connection at the Caterpillar Monitoring System harness code lines. There could have been a short at one of the harness connectors that was disconnected and then reconnected.STOP
NOT OK - It is unlikely that the engine ECM has failed.Repair: Exit this procedure and perform this CID 0590 FMI 12 again. If the cause of the diagnostic code is not found, replace the engine ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace.".STOP

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