Powertrain Control Hardware

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Powertrain Control Module (PCM) And Location

The PCM is the control center for the engine powertrain system. The PCM monitors the information from various sensors, and controls the systems that affect the vehicles performance and emissions. The PCM and the TCM are stand-alone modules. The PCM and the TCM communicate through the CAN. The PCM has a 3 pocket connector assembly with a total of 222 pins. The 74 pin connector is dedicated to chassis related inputs, outputs, powers and grounds. The 98 pin connector is dedicated to engine control related inputs, outputs such as the fuel injectors, camshaft, crankshaft sensors and the turbocharger systems. The 50 pin connector is dedicated to the exhaust aftertreatment components. The PCM receives input from sensors and other electronic components (switches and relays) and places this information into RAM or the EEPROM. Based on information programmed into its ROM, the PCM generates output signals to control various relays, solenoids, and actuators. The PCM controls these output circuits by controlling the ground or the power feed circuit through the transistors or an output driver module.