need assistance with what is order of injector wiring. I have a 2002 F350 Powerstroke 7.3l engine. Have seen posts regarding pin plug wiring. Chris has a 2002 F350 six speed and I have an automatic. IS the pin plug wired the same? Can anyone help with how to test? Unplug to test engine or plug? Book I have only shows teardown and rebuild. I do not want to mess up anything. Have tons of questions. Throwing a code of P1316.

 

I can't help you with your problem, but for future readers:

P-1316 = "Injector Driver Module Codes Detected"

 

Thanks anyway. Glad to be here!

 

Try posting this in the 7.3L section. You might have better luck there. Give as much detail and background info as possible, like what the symptoms are and what you have done so far to diagnose and fix.

Good luck!

1999 - 2003 7.3L Power Stroke Diesel - Ford Truck Enthusiasts Forums

 

P1316 indicates codes stored within the IDM. You'll need a code reader that is compatible with pulling IDM codes to see what's going on.

That being said, the most common reason for the P1316 on a 7.3L PSD is a loose valve cover harness. These have a tendency to pop off after a few years. You'll have to pull the valve cover off, reconnect, then re-assemble everything back together. Ford even has a clip to add to the harness to prevent it from popping out again.

If you can pull the IDM codes, it will tell you which side came loose.

 

Moved to 1999 - 2003 7.3L Power Stroke Diesel forum.

 

Or, if it is the UVCH, just start your engine and let it run for 30 seconds or so. Whichever exhaust manifold is warm is the one still working. If the other side is cold, you've found the side that's loose.

When it happened to me, I didn't care which side came loose. I pulled both valve covers and popped a clip into the harness (UVCH clip <--click the link) on each side.

Stewart

 

Like the others have said....the most common issue with that code is a loose harness (UVCH: Under Valve Cover Harness). If your engine is running like some cylinders are missing then that is most likely your issue. There is no way to fix it without removing the valve covers.

However, P1316 can appear for any IDM related reason. If your engine is running well and you have the 1316 code then you could have some other issue such as a bad solenoid, bad wiring etc. A proper code reader will pull the specific codes that will help diagnose more accurately. If you suspect a wiring issue, then you can take some readings at the IDM connector itself and start ruling out stuff. Here is a link to how to test the wiring from the IDM connector.

 

One bad injector solenoid can sometimes take down that whole bank.

Here's how to ohm out the UVCH with VCs in place.

 

Welcome to FTE. As you probably have figured out from Robin's post, the answer to your question is YES. The injector wiring is the same from auto to manual.

 

I could write a book on P1316 in my '02 F350 7.3. I have had it for over a year now and since I live in the state of California I now have to smog the truck only I cannot get rid of the check engine light. I have done the fifty cent mod, checked all my wiring resistances, checked all glo plugs, replaced the injector wire harness under the valve cover as well as a new valve cover gasket and even a new injector drive module.
Mueckster has been very helpful with advise and wire diags and trouble shooting flow charts but the remedy has escaped me. I finally gave up throwing money at it and decided to take it to the dealership. Called to set up an appointment and was told they don't make appointments for diesels because they don't have enough trained diesel mechanics. The best they could offer is for me to bring it in and leave it for a couple of weeks. This is my work truck. I cannot turn loose of it for a couple of weeks. I would starve.
I am just sitting on it now waiting for Christmas to be over. maybe Santa will bring me some pixie dust or something.

 

This might sound silly but I had a check engine light with the 1316 code a while back (way before I had actual injector problems...) and the fix was pretty simple. Upon inspection of the IDM harness connector, I noticed the factory dielectric grease had dried up and turned to a thin flaky substance. I cleaned up the connector and pins with electronic parts cleaner (spray can) applied new fresh dielectric grease and the SES light went away.

After that I went ahead and cleaned the main harness connector at the driver's side of the engine, both valve covers and the PCM just because I figured they all might have a minor version of the same problem.

Not sure if this is your issue but it's inexpensive to check. The IDM can be accessed by removing your inner wheel well on the front left wheel. Look inside the fender immediately behind your F250/F350 fender badge.

I hope this helps your issue.

EDIT: I see you replaced your IDM already, so obviously you already know where it's located. Did you clean the connector when you replaced the IDM?

 

Thanks to all who helped. Replaced harness and did Ohm test. started up purring like a good kitty and then started in again (on drivers side) Thinking it might be connections from old BullDog that might have mad wires loose. Between 5 and 8 is like a hiccup? Will strggle on until after xmas and then find a peofessional I guess. again thanks for responses. David