Caterpillar — Electronic Control Module (Generator Set) - Replace

Repair & overhaul · EMCP 3 ECM (generator set)

From a Caterpillar service manual covering: BRK1-Up, CAL1-Up, CMC1-Up, CNB1-Up, FDN1-Up. Check it applies to your exact model before use.

Applies to: Caterpillar EUI Engine engine

Procedure

1. Note hour meter, all engine setpoints, and programmed spare inputs/outputs from old ECM.
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.
4. Remove the six nuts that fasten the ECM to the front panel. Remove the ECM.
5. Place new ECM in the front panel, install and tighten the six nuts.
6. Reconnect the harness connector and the positive battery lead.
7. Reprogram setpoints, spare inputs/outputs, hour meter, voltmeter/ammeter programming and AC offset adjustment.

Source: Caterpillar service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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