Electronic Control Module (ECM): Notes

Electronic Control Module (ECM) is located in passenger compartment, behind glove box. It constantly monitors information from various sensors to control EGR, TCC, cold advance and glow plug systems. ECM processes input signals from sensors and then sends necessary electrical responses to control these systems.

The ECM performs the diagnostic function of the DEC system. It can recognize operational problems, alert driver through the SERVICE ENGINE SOON light and store codes which identify problem areas to technicians making system repairs.