Dtc P0200

[Doc]

Hello all,
I've got a new situation. I have been trying to help a guy out with his tune for a while now. I could'nt really do anything until last night. The vehicle is a 03 RCSB with a 220 cam and bolt on's. Real simple, that is unless you are dealing with a major mail order tuner that has the tune locked. The truck is really nice and has some impressive track times but the drivability just sucks.This guy has already spent a $1k usd on "two" tunes. The first "tune" was for just the bolt ons and then the second was for the cam. What really adds insult to this injury is this "Tuner" has all kinds of photos, track times whatnot on his website of this guy's truck. Well for all the hard earned dough this guy has put out the truck doesn't run like it should.

Finally after many repeated unanswered phone calls, emails, he gets ahold of this guy and this tuners biggest concern is the "intellectual property" of the tune getting out. Maybe he doesn't want any further embarassment but, he agrees to send out another pcm with the tune unlocked.

We got the pcm last night and right on startup we got the following codes. All of the codes reset except the P0200 Injector control ckt.

The attached tune was what was in the pcm. I tried to find an unaltered OS 12593058 to no avail. There are sevral Out of range values that EFI Live detected but when I compared the values to OS 12579405 I couldn't find anything out of the ordinary.

At any rate the truck ran worse than the locked pcm tune(which we still have by the way). We are supposed to send the locked pcm back.

After looking up the code in the service manual it basically says it's a wire, fuse, or the pcm. Seeing how the locked pcm doesn't pop this code or run like the unlocked one I am leaning twoards the pcm.

Unfortuneatly, I jumped right in and linked my v1 cable to this pcm. Does anybody have a ckt diagram for a 1mb pcm?

My next step is to check the output pins on the pcm when the guy brings it back to me. Hopefully it's just a pushed, bent, corroded, or cold solder joint.

Thanks

[TAQuickness]

Sounds like the unlocked PCM has bad injector drivers in it. I would download a copy of the unlocked tune, send the PCM back, then contact wait4me and buy a new PCM.

You got the tune and your hands are clean of dealing with the "pro"

[joecar]

Yes, I agree, sounds like PCM has several bad drivers.

[wait4me]

What injectors is he using? IF they are stock, then it could be a messed up operating system too though.

There are out of range tables for sure in there. Email me the COMPLETE specs and the VIN and ill send you a file that will make it perfect drivability. Too many things are wrong in the file. So it will be best to start over.

[Doc]

How often have you guys seen the bad drivers issue? I wish it were as simple as just sending it back at this point. My goofy ass just went ahead and linked my V1 cable to it prior to thoroughly investigating the whole matter. I mean I have access to a micro soldering bench with a huntron tracker logic signature anlayzer at work, if I had a diagram I could/would remove and replace any failed discrete components.

Funny thing though, the pcm passses/performs all other functions.

[Chevy366]

Just so happens I have one of those tunes also (Nelson Performance 5.3L, 93 Octane), when I open it throws the out of range also but just {G1201} , anti-theft system .
Here is the .tun file .
Think it is for a 04 though .

[wait4me]

the injectors could just be bad, I have a set of injectors that makes that same code show on any computer. but i put in a different set and it dont throw the code. ??

[Doc]

Jesse,
Thanks for taking the time to stop by my thread.

What injectors is he using?

They are stock.

Email heading your way.

[Doc]

I think I found the problem. Took the bugger apart at work. Started probing with the Huntron Tracker all the injector drivers...All good. Crap! Then I noticed a pushed pin that was backing into it's brother behind it. Methinks this is it. Can't wait to get home and try it out.

[joecar]

I think I found the problem. Took the bugger apart at work. Started probing with the Huntron Tracker all the injector drivers...All good. Crap! Then I noticed a pushed pin that was backing into it's brother behind it. Methinks this is it. Can't wait to get home and try it out.

Good work.