Powertrain Control Module (Pcm): Notes

Powertrain Control Module (PCM) is located in passenger compartment, behind glove box. It constantly monitors information from various sensors to control fuel flow, injector timing, cruise control, transmission shifts, throttle, EGR, TCC, cold advance and glow plug systems. PCM processes input signals from sensors and then sends necessary electrical responses to control these systems.

The PCM performs the diagnostic function of the system. It can recognize operational problems, alert driver through the SERVICE THROTTLE SOON light and store codes which identify problem areas to technicians making system repairs.