PCM Replacement?

Okay, got the VSM out. What am I looking for with water damage? Seems to be some sort of discoloration on the cover.

From what I’ve been reading, I’m guessing I’ll be better off buying a new one and getting it programmed. As I’m also guessing having it checked out by a dealer will be close to a new one and programming with diagnostic costs.

Just an update. I have a replacement fuse box coming Friday. I’ll return if that doesn’t work. I had the truck at a friends house from work for around two months but he never got around to it and this diagnosing is passed any exposure I’ve had. Don’t get me wrong, I love working on vehicles, but wiring is something I’ve never played with much.

Looking for a BCM/VSM but just can’t locate an exact part number match. I would like to think there’s a newer number it crosses to but heck.

2c7t-15k602-aj.

Good news. I found a ground from the alternator split in two. Reconnected and started her up. Wire got hot so I went underneath again. I found the starter battery wire sitting against the chassis and had rubbed through. Totally my fault, can’t believe I didn’t loom it. Fixed that and it appears all codes, even from when I bought it, are gone but I will continue to monitor. Only issues that remain are the power locks and key-less entry do not work. Headlights don’t work but I have running lights and high beams. But when I turn the switch to the headlights, they go out?

I just did. I want to say, thank you so much for your help.

2002 Ford F-250 XLT mileage: 70,000. I was checking for a power steering fluid leak, I had my wife turning the wheel back and forth found the leak and fixed the problem. My problem is when my wife left the key on and I didn't find out till the morning. At that time, my battery was gone. I charged up the battery tried to start the truck with no luck. It turned over but would not run. I ended up jumping the fuel pump relay and it started right up. I checked the codes and received all 11 all okay. I went for a little drive maybe five miles turned the truck off till the next morning. Went to start it and nothing again. Jumped the relay again and it started. But this time it was running real rough and if I gave it gas it would die plus the check engine light stayed on. I ended up taking it to the ford dealer to look at it. The tech said the computer has no data output. The MAP censer needs replacing and the catalytic converter was plugged. My question to you is there any way I can test the computer for data output with out a lot of expense.

The ECM may be faulty. Try scanning it for fault codes; you will need a scan tool for this procedure and it is not cheap. Is it possible that the battery was jumped backwards when you were trying to get it started? If it was, you probably "cooked" the ECM.

The fuel pump quit so I had it replaced then 2 coil packs quit replaced them plus plugs old plugs looked good just normal wear. Now I am not not getting signal to one injector checked with noid light. Seem to think it is something with the ecm. I also have a superchips programer I reset it back to stock and still have nothing. Have u heard of anything like this any help would be greatly appreciated.

7.3L diesel. Clicks at relays at startup attempt. Checked relays all good. Batteries good. Grounds good. New computer installed recently. New starter. Thinking it is the PCM (from advice from friends). How do we check the PCM?