what is a pcm relay
the PCM relay is mounted above the PCM in the passenger kick panel, take a flash light and look good ...it should be mounted to the white plastic holder for the compute â¦ r.4 people found this useful.n a 2001 Ford Ranger: In the Power Distribution Box (which is  live ) located in the engine compartment, on the drivers side (the # 54 relay is the relay for the Power â¦ train Control Module / PCM). + 1 other found this useful. Chuck Grantham.