1881710C91 | Genuine International® Maxxforce DT ECMDescription: Engine Control Module For Maxxforce DT 9. 10 Condition: Remanufactured Brand: International Part Number: 1881710C91 Fitment Guide: YEAR MAKE MODEL 2007 2017 Maxxforce DT 9, 10, N9, N10 An Engine Control Module (ECM) is an electronic unit that acts as the brain of a vehicles engine, controlling and optimizing how the engine operates. 1. Fuel Injection Control Determines how much fuel to inject Ensures the correct airfuel mixture 2.