CYLINDER GP-STEERING 3870614 - Caterpillar

Illustration 1 g02163817
Schematic of the Cat data link
This diagnostic code is recorded when the "Drivetrain" electronic control module (ECM) is not sending the necessary parameters to the "Advisor ECM" at the proper rate. The update rate for parameters that are generated by the "Drivetrain ECM" is not correct. The communication failure may be due to disconnected connectors or a faulty wiring harness.The following conditions could cause this diagnostic code to be activated:
Software is installed on the "Drivetrain ECM" that is not correct.
Software is installed on the "Advisor ECM" that is not correct.
Incompatible software may be installed.
The fuse for the "Drivetrain ECM" may have failed.Test Step 1. CHECK THE "Advisor ECM" AND THE "DRIVETRAIN ECM" FOR PROPER SOFTWARE VERSIONS.
Use the Caterpillar Electronic Technician (Cat ET) service tool in order to verify that the versions of software are compatible. Note: Consult your Caterpillar dealer for the correct part numbers of the flash software.Expected Result:The proper versions of software are installed on the "Drivetrain ECM" and the "Advisor ECM".Results:
OK - The versions of software are compatible. Proceed to Test Step 2.
NOT OK - The proper software is not installed.Repair: Flash the proper software to the appropriate ECM. Cycle the keyswitch in order to initialize the new software. Ensure that the diagnostic code is no longer active. STOPTest Step 2. RECHECK FOR DIAGNOSTIC CODES.
Ensure that the diagnostic code is active. Expected Result:The diagnostic code is inactive. The diagnostic code indicator is inactive.Results:
OK - The diagnostic code indicator and the diagnostic code are inactive.Repair: Clear the diagnostic code.STOP
NOT OK - The diagnostic code is active.Repair: Ensure that the proper software is installed before replacing the ECM. If the software is correct, the "Advisor ECM" may have failed. It is unlikely that the "Advisor ECM" has failed. Exit this procedure and perform this procedure again. Contact your dealerships Technical Communicator for possible consultation with Caterpillar. This consultation may greatly reduce repair time. If the ECM must be replaced, refer to the Testing and Adjusting, "Electronic Control Module (ECM) - Replace" Section of this manual. If the"Advisor ECM" was recently replaced, the "Drivetrain ECM" may have failed. It is unlikely that the "Drivetrain ECM" has failed. Exit this procedure and perform this procedure again. Contact your dealerships Technical Communicator for possible consultation with Caterpillar. This consultation may greatly reduce repair time. If the ECM must be replaced, refer to the Testing and Adjusting, "Electronic Control Module (ECM) - Replace" Section of this manual.STOP