The increasing complexity of the modern vehicle is due in large part to the proliferation of onboard computers and other electronics.
The various computers in today’s vehicles use inputs from multiple sensors to make decisions that ensure the vehicle is operating as designed, and they send their own signals to various actuators, modules and solenoids. These computers play an important role in the safe, reliable operation of the vehicle and its major systems.
The computer we talk about most often is the powertrain control module, or PCM. The PCM is the electronic brain that controls almost everything the engine does. It controls ignition timing, fuel delivery, valve timing in engines with variable valve timing, emissions functions, turbo-boost pressure in turbocharged engines, idle speed, throttle position and cruise control.
This video is sponsored by The Pronto Network.