What is the PCM module in a car?
1 Answers
PCM module is the engine control module. The following is an introduction to PCM: 1. Function: PCM is used to control power output. It receives sensor signals and performs complex calculations to control fuel supply, air distribution (electronic throttle), injection and ignition timing, intake pressure adjustment, and determines the engine compensation control coefficient based on temperature, load, knock, and combustion conditions. 2. Features: PCM also performs system diagnostic functions and can identify operational faults. It alerts the driver through the MIL (Malfunction Indicator Lamp) and stores diagnostic trouble codes to help technicians locate and repair faults.