I have a 1999 ford ranger. Part number for pcm power diode.
Pcm Power Diode Fuse
Ford ranger pcm power diode. What is the resistance if any supposed to be through the diode for pcm circuit on 94 f250 straight six answered by a verified ford mechanic. Not allowing voltagecurrent spike in the opposing direction toward the pcm. 1995 73l diesel ford e 350 needs a power distribution box because mine blew. Cannot find online so im wondering if its called something else or if anyone has the. The power train control module on a ford controls every aspect of the vehicles engine transmission clutch and electrical and fuel delivery. On a 2001 ford ranger.
Diode was coroded and had to be removed in piecesno chance for obtaining a part number. I was just finnishing putting some heads on it and hooking up the battery cable to the alternator when i arced it out. Autozone repair guide for your wiring diagrams powertrain control module 1999 powertrain control module pcm power diode body control module 2003 brake pedal position bpp switch 1999. The computer may get flyback voltage surge and may damage power circuits inside the pcm is the diode was not used or is shorted across letting voltage to flow both ways. The diode allows voltage to flow in only one direction toward the pcm relay. How a blocking diode works testing a diode with a multimeter duration.
Diode tutorial how to build an ac to dc power supply duration. Ford f250 1997 power stroke diesel refferring to. Without a properly working pcm the ford will not run. 1993 power distribution panel woes diode ranger forums the ultimate ford. 1995 ford e series e 150 xl club wagon. The pcm power diode is put into the fuel pump and pcm relay power circuit to prevent power surge feedback into the circuit called flyback voltage then can be higher than normal operating voltage.
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 powertrain control module. At times you may want to perform a reset of the ford pcm for basic troubleshooting.
Gallery of Ford Ranger Pcm Power Diode
