Engine Control Module: Description and Operation

Powertrain Control Module Inputs/Outputs:

PURPOSE
The Powertrain Control Module (PCM) detects engine operating and driving conditions along with exhaust gas oxygen content. Various sensors, switches, and components provide the PCM with information that allows it to control the amount of fuel injected into the engine. The PCM also has partial control of the evaporative emission, ignition, and deceleration systems.

OPERATION
The PCM receives and transmits data to and from relays, sensors, actuators, switches, and other components.