Inside every vehicle, there is a little box that functions as a brain. This is connected to your truck’s engine, the Engine Control Module (ECM), works to ensure that your vehicle operates at optimal performance. The ECM is responsible for monitoring pretty much all the sensors in the engine.
What does the ECM regulate?
The ECM monitors and controls key components of your vehicle’s operating systems:
Air-fuel ratio: sensors are used to regulate the oxygen to fuel ratio detected in your exhaust to detect an engine rich/lean reading. Some of these sensors include the mass airflow sensor(s), the oxygen sensor(s) and air-fuel sensor(s).
Idle speed: In your vehicle’s crankshaft and camshaft(s), there are sensors that monitor your vehicle’s RPM and engine load by scanning the speed of rotation of the engine.
EGR & DPF system control: In your vehicle’s EGR and DPF systems. This includes the EGR valve and air intake throttle, ensuring proper management and reduction of nitrogen oxides and particulate matter emissions. Also, DPF system management is designed to burn off accumulated particulate and enable filter regeneration.