Engine Control Module (ECM)
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
The ECM controls all ignition system functions and constantly adjusts the spark timing. The ECM monitors information from various sensor inputs that include the following:
- The crankshaft position sensor
- The accelerator pedal position (APP)
- The manifold absolute pressure (MAP) sensor
- The intake air temperature (IAT) sensor
- The vehicle speed sensor (VSS)
- The engine knock sensor
- The engine coolant temperature (ECT) sensor
- The mass airflow (MAF) sensor
- The camshaft position sensors