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| Illustration 1 | g02659980 |
This diagnostic code is recorded when the VIMS ECM is not sending the necessary parameters to the Implement ECM at the proper rate. The update rate for parameters that are generated by the VIMS 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 VIMS ECM that is not correct.
- Software is installed on the Implement ECM that is not correct.
- Incompatible software may be installed.
- The fuse for the VIMS ECM may have failed.
Test Step 1. CHECK THE CHASSIS ECM AND THE VIMS 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 SISWeb for the correct part numbers of the flash software.
Expected Result:
The proper versions of software are installed on the VIMS ECM and the Implement 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 Ensure that the diagnostic code is no longer active.
STOP
Test Step 2. RECHECK FOR DIAGNOSTIC CODES.
- Ensure that the diagnostic code is inactive.
Expected Result:
The diagnostic code is active. The diagnostic code indicator is inactive.
Results:
- OK - The diagnostic code indicator and the diagnostic code are inactive.
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 VIMS ECM may have failed. A failure of the VIMS ECM is unlikely. Exit this procedure and perform this procedure again. Contact the dealership 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 VIMS ECM was recently replaced, the Implement ECM may have failed. A failure of the Implement ECM is unlikely. Exit this procedure and perform this procedure again. Contact the dealership 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