Disconnect the OEM, sensor, and actuator harness connectors from the ECM, if they are
not already removed. Refer to Procedure 019-043 in the appropriate troubleshooting and repair manual.
A = Sensor
B = OEM
C = Actuator.
NOTE: Document all of the programmable parameters, features, and calibration data used in the old ECM. These data will be needed to program the new ECM.
To reduce the possibility of ECM damage, do not blow compressed air into the ECM ports or connectors. Compressed air can contain moisture due to condensation.
Use quick-dry electrical contact cleaner, Part Number 3824510, to remove all dirt and moisture from the ECM connector ports and the harness connectors.
Use only Cummins-recommended lubricant DS-ES, Part Number 3822934. Other lubricants, such as lubricating oil or grease, in the connectors can cause ECM damage, poor engine performance, or premature connector pin wear.
Apply a thin coating of lubricant to the connector nosepiece.
Spread the lubricant across the connector nosepiece, making certain that it lubricates each pin and pin hole. Continue spreading out the lubricant until it can
Copy both the ESN and ECM CODE that are on the old ECM’s dataplate to the new ECM’s dataplate. Write these two numbers onto the dataplate with an electric pencil. Please include the SC and GOV data for United Kingdom (U.K.)
engines, in addition to the ESN and ECM CODE.
CAUTION
Do not punch the dataplate with a hammer and letter punch. Damage to the ECM can occur.
To reduce the possibility of connector damage, do not use probes or leads other than Part Number 3822917. The leads must fit tightly in the connector without expanding the pins in the connector.
Turn keyswitch OFF.
Disconnect the engine harness sensor connector from the ECM.
Disconnect the OEM harness connector from the ECM.