C8.7 and C12.9 Marine Engines Caterpillar

ECM - Replace

Usage:

C8.7 CS7

The Electronic Control Module (ECM) contains no moving parts. Replacement of the ECM can be costly. Replacement can also be a time consuming task. Most electronic failures occur in the wiring and connectors.

When troubleshooting has indicated that the ECM has failed, temporarily mount a new ECM on the side of the engine. Test the engine with the new ECM. If the problem no longer exists, proceed with the following steps.

Note: Do not use the test ECM on a a different engine model or rating once the ECM has been flashed. The ECM will only work with the software for the engine model and rating that the ECM was initially flashed to operate.

Replacement of the ECM

Connect Cat^® Electronic Technician (Cat ET ) to the service tool connector.
Using Cat ET, capture an "ECM Replacement File". The "ECM Replacement File" will reduce the time to program the new ECM. Each parameter will require 1 minute to reprogram. Record customer specified parameters from the failed ECM.
If the electronic service tool will not communicate, refer to Troubleshooting, "Electronic Service Tool Does Not Communicate" or record the parameters from the failed ECM.
Replace the faulty ECM, refer to Troubleshooting, "Electrical Connectors" for additional information about the ECM connectors.
Use the "ECM Replacement File" to reprogram the ECM or use the manually recorded parameters from Step 2.