Engine Control Module (ECM)
Computerized engine controls are used to control fuel, ignition and emission control systems. Engine Control Module (ECM) receives input signals from various sensors and components. ECM then compares each signal with a preprogrammed parameter in its memory. Based on this comparison, output signals are then adjusted to allow vehicle to perform optimally under all operating conditions. ECM is located under passenger-side carpet.
NOTE:
Components are grouped into 2 categories. First category covers INPUT DEVICES, which control or produce voltage signals monitored by ECM. Second category is OUTPUT SIGNALS, which are components controlled by ECM.