freightliner Workshop Repair Guides

Freightliner Workshop Service and Repair Manuals

Main Relay (Computer/Fuel System) > < Engine Control Module|Removal
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Engine Control Module: Service and Repair
Installation

INSTALLATION

NOTE: If a replacement (new) ECM is being installed, the scan tool must be used to program (flash) the new ECM with vehicle specific
information.

NOTE: Any time a new ECM is installed, the injector quantity adjustment procedure, also called injector classification must be performed.

1. Position the ECM into the guide of the retaining bracket.
2. Carefully push the ECM in to the bracket.
3. Connect the ECM wiring harness connectors.
4. Connect negative battery cable.
5. Using the scan tool, perform the "ECU Auto Replacement", "Diesel Particulate Filter (New) Initialization", and "Engine ECU Replaced (Drive

Authorization)" procedures.See: Testing and Inspection/PCM/ECM Reprogramming

Main Relay (Computer/Fuel System) > < Engine Control Module|Removal