IDM Code P1316
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IDM Code P1316
I have a F350 2003 and one day I was driving and the truck just started to miss. I pulled over the truck starts fine but it starts missing after about a couple seconds. I took it to see what codes it pulls up and it pulled up code P1316 IDM. I searched on different forums and they say it has to do with the wiring harness inside the vaive covers. I removed the vavle covers and checked all the wiring harness. Pulled the harness off in the inside of the valve covers and checked all connetors. Changed fuel filter oil is fine. When I turn the truck on it hesitates on power and the check engine light comes on. I also can put my hand on the manafold on the driver side when the truck is on. So the driver side is not firing up. They told me it is impossiable that all 4 injectors on one side can go out like that. Some tell me its the entire wiring harness and some say computer. I have a super chip on it with a dial **** inside of the truck. Ive checked all fuses and the entire harness. I dont know what it can be! Can someone please help the truck only has 148,000 miles its just getting broke in. If someone has experinced this please respond.
Posting Guru
Joined: May 2006
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From: MACON, GA
I had a similar problem which I have posted about previously regarding the wiring harness being pinched on my 2003 Excursion with a 6.0 PSD. My problem was a known problem affecting many vehicles. Maybe check old TSB or find a dealership with some experienced technicians.
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Joined: Sep 2007
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From: S CAL
The 6.0l uses a FICM to control the injectors not a IDM so I was somewhat confused by the DTC that you posted. In any case the wiring harness was big problem in the 2003 models and I would check that all the way to the FICM. Also the FICM itself could be bad. Without a scanner that could be hard to pinpoint the FICM. You could go to the 6.0L forum post your problem there and also do a search on FICM's and chaffed wiring harness. You could also search the TSB's like rmosso1 suggested because there was one out for the wiring. I will look at some of my documentation and see if there is anymore information on 6.0L code P1316 I know in the 7.3L documentation there is a
P1316 and it does point to the IDM.
P1316 and it does point to the IDM.
Post Fiend
Joined: Mar 2007
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From: Texas
Welcome to FTE Second Image. Please tell us which motor your 2003 has. As 3000 FPS mentioned, it sounds like your 1316 code is from a 7.3 motor. He took care of the 6.0 explanation, so I'll chime in on the 7.3 side.
This is commonly a loose connector under the valve cover on the 7.3. If the plugs were connected tight, you'll need to inspect the plugs for any loose or damaged pins, then ohm the injector wires to make sure there are not shorts between the plug and the injectors, then from the plug back to the IDM. A new IDM is $683 (from our sponsors, close to $1000 at the local Ford house) so you may want to get everything checked out on a good scanner before you spend the money on new parts.
Let us know which motor you have, and we'll help you proceed from there.
This is commonly a loose connector under the valve cover on the 7.3. If the plugs were connected tight, you'll need to inspect the plugs for any loose or damaged pins, then ohm the injector wires to make sure there are not shorts between the plug and the injectors, then from the plug back to the IDM. A new IDM is $683 (from our sponsors, close to $1000 at the local Ford house) so you may want to get everything checked out on a good scanner before you spend the money on new parts.
Let us know which motor you have, and we'll help you proceed from there.
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Sorry for not mentioning the motor is a 7.3 and I have removed the valve covers and checked the wiring. A friend of a friend has the wiring that goes inside the vavle covers that will let me borrow to find out if thats the problem. Do you think it can be from the chip I have on. But it never gave me problems before.
Thanks to all that have responded
Thanks to all that have responded
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Freshman User
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Hi,
Check out this article on diagnosing Glow plug related P code issues: https://www.ford-trucks.com/tsb/full...p?tsb=03-21-36
I found that my GPCM was bad...
Pete
Check out this article on diagnosing Glow plug related P code issues: https://www.ford-trucks.com/tsb/full...p?tsb=03-21-36
I found that my GPCM was bad...
Pete
Post Fiend
Joined: Nov 2007
Posts: 9,549
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From: Payson, AZ
If you believe one entire bank is not firing and you pulled the outside connector from the UVCH connector it would not change how it runs. If it runs worse than you will know that at least some of the cylinders on that side are firing. Just an idea.
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
Yes, a loose chip can cause all sorts of problems, so I'd pull that first to eliminate that possibility.
Next, I'd get out my OHM meter at this point and start checking if there is a wiring issue anywhere. You can unplug the 9 pin connector on the outside of the valve cover and check the UVCH wiring.
The 9-pin plug is wired as follows:
G G I I C I I G G
G=Glow Plug +
I = Injector +
C= Injector Common
The injectors fire with a 115VDC signal from the IDM. Do Not pierce the wires to test.
Test between "I" and "C" to test the injectors, should be less than 5.0 Ohms.
To check glow plugs Test between "G" and battery ground. Should be between 0.6 and 2.0 Ohms
If that all checks out good, I'd drop the drivers front wheel well liner and check the wiring from the IDM to the 9 pin connector for continuity. There is a 42 pin connector over the drivers valve cover, but I'd check out the whole thing. To lose the entire bank would have to be some pretty severe damage to the wires.
If your buddy has spare UVCH wires, does he have an IDM you could swap out to test yours?
Next, I'd get out my OHM meter at this point and start checking if there is a wiring issue anywhere. You can unplug the 9 pin connector on the outside of the valve cover and check the UVCH wiring.
The 9-pin plug is wired as follows:
G G I I C I I G G
G=Glow Plug +
I = Injector +
C= Injector Common
The injectors fire with a 115VDC signal from the IDM. Do Not pierce the wires to test.
Test between "I" and "C" to test the injectors, should be less than 5.0 Ohms.
To check glow plugs Test between "G" and battery ground. Should be between 0.6 and 2.0 Ohms
If that all checks out good, I'd drop the drivers front wheel well liner and check the wiring from the IDM to the 9 pin connector for continuity. There is a 42 pin connector over the drivers valve cover, but I'd check out the whole thing. To lose the entire bank would have to be some pretty severe damage to the wires.
If your buddy has spare UVCH wires, does he have an IDM you could swap out to test yours?
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
If it starts out on all 8 Or 7 ,,then drops one bank ,,the IDM may be in protect mode ,,,
Some reading ....here....
Some reading ....here....
If so, it sounds like a cylinder contribution test is in order for Second Image.
