CAP 1U0212 - Caterpillar

Illustration 1 g01446636
Schematic of the Cat Data Link CircuitThis diagnostic code is recorded when the power train ECM can not communicate properly with the implement ECM. The implement ECM and the power train ECM communicate via the Cat Data Link.The possible causes for this diagnostic code are listed:
The implement ECM or the power train ECM has incorrect software or hardware.Note: Ensure that the diagnostic code indicator is active and that the diagnostic code is active.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 implement ECM
The part number of the flash software for the power train ECM
The part number of the implement ECM
The part number of the power train 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. The CID 0596 FMI 14 is active. The problem has not been corrected. The ECM may have corrupted software.Repair: Reflash the ECM with the correct software. See the Testing and Adjusting, "Electronic Control Module (ECM) - Flash Program" section for additional information.STOP
NOT OK - All of the part numbers are not correct. Repair: The installed implement ECM or the power train ECM have the wrong part number or the incorrect flash software is installed. Replace the incorrect implement ECM or the power train ECM with a module that has the correct part number. Flash the correct software. See the Testing and Adjusting, "Electronic Control Module (ECM) - Flash Program" section for additional information.STOP