What does ECU mean on a semi truck?
What does ECU mean on a semi truck? The electronic control unit (ECU) used in today's cars and trucks is used to control the engine and other components' functions. What is ECM in diesel engine? The ECM controls the timing and amount of fuel injected at a speed of 1000th of a second for optimal combustion. The ECM delivers precision control over the EGR system, including the EGR valve and air intake throttle as well to reduce NOx and particulate matter (PM) emissions. How does DTC code work in OBD system? When the vehicle’s OBD system detects a problem, it...