EMCP3 Caterpillar

Replacement Procedure

Note: The configuration from the ECM, that is being replaced, can be saved by using Cat ET. The configuration can then be uploaded to the new ECM.

1. The new ECM must be programmed after installation. If the ECM that is being replaced is functional, then make a note of the following items: hour meter value, all engine set points and any spare inputs or outputs that are programmed. Refer to System Operation, RENR7902, "Set Point Programming".

2. Shut down the engine. Remove the positive lead wire from the battery.

3. Remove the harness connector from the ECM. A 4 mm hex wrench is required in order to turn the fastening screw.

4. Remove the six nuts that fasten the ECM to the front panel. Remove the ECM.

5. Place the new ECM in the front panel. Install and tighten the six nuts to secure the new ECM to the front panel. The six nuts are the same nuts that were previously removed.

6. Reconnect the harness connector to the ECM and reconnect the positive lead wire to the battery.

   Reference: For wiring, refer to the generator set wiring diagram in Testing and Adjusting, RENR7902, "Electronic Control Module Wiring Diagrams".

7. Using the values from the original ECM, reprogram the set points, the spare inputs/outputs, and the hour meter. Refer to Step 1.