Questions and Answers
PCU or ECM/ECU?
Q. Hi, PCU or ECM/ECU? Is there a difference between the two? Do either exist? My 1994 Ford Explorer Eddie Bauer, 4x4 got the "ECU" replaced and now has problems and a different mechanic says the ECU/ECM doesn't exist for this vehicle. Help!
A. Sometimes terminoly and acromyns can get confusing to the lay person and, at times, to the professionals as well. What I refer to as something, someone else in another part of the country or who was trained different will refer to it as something else.
Powertrain Control Unit (PCU), Powertrain Control Module (PCM) Electronic Control Unit (ECU) and Electronic Control Module (ECM) are all the same thing.
As they say... "A rose by any other name is still a rose".