HARNESS AS-MONITOR 4759632 - Caterpillar

that replacement of the ECM is absolutely necessary prior to replacement of the ECM. The ECM is seldom the cause of a diagnostic code. Always check that the proper ground and power is available to the ECM. Before you replace the ECM, contact the ECM hotline help desk. The ECM Hotline will provide guidance to determine if an ECM needs replaced. Dealer Technical Communicators have the information in order to contact the ECM Hotline. Note: New electronic control modules are available either preprogrammed for a particular machine or the ECM is not programmed. An ECM that has not been programmed must be programmed by using the Caterpillar Electronic Technician (Cat ET). Refer to Step 6 in order to determine whether the ECM has been programmed.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness from the ECM.
Remove the ECM.
Ensure that the replacement ECM has the correct part number.
Connect the machine harness to the ECM.
Determine whether the ECM has been programmed. Connect the Cat ET to the service tool connector. The Cat ET communicates to the ECM. The Cat ET will indicate whether the ECM has been programmed. An ECM that has not been programmed must be programmed by using the WinFlash software which is contained in the Cat ET.The Cat ET will provide access to the ECM, if the ECM has already been programmed.
You should use the Cat ET. Select the "Service" function from the drop-down menu. Then, select the "Configuration" function. A list of items will appear. Each item in this list should be checked in order to verify that the setting matches the machine configuration.
Perform all applicable system calibrations. Refer to Testing and Adjusting section of Service Manual, KENR8980.