What does ECM failure mean?
1 Answers
ECM failure refers to a malfunction in the powertrain module or the engine, indicating an issue with the vehicle's Electronic Control Module. Its main functions include: 1. Fuel injection (EFI) control; 2. Ignition (ESA) control; 3. Idle speed control (ISC); 4. Emission control; 5. Self-diagnosis and alarm; 6. CAN bus interface. During operation, the ECM collects working status information from various parts of the engine through sensors such as temperature sensors, pressure sensors, rotation sensors, flow sensors, position sensors, oxygen sensors, and knock sensors. This data is transmitted via wiring to the ECU. After receiving these signals, the ECU analyzes them to determine the functional status of various engine components.