PCM diode NO START
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PCM diode NO START
ok so im new to diesels but my truck will not start. it is a 2000 7.3 6 speed dually. i recently was messing with the truck and pulled out the pcm diode and as i was putting it back in something sounded as if it grounded something out. i know its stupid to mess with electrical while it was on. my wts light still lights up. i would like a diagram on where the wires go after the pcm diode and how to test all of the components. it did run for about 5 mins after and ad some white smoke. and a code came up that said injector pressure wasnt at desired pressure or something. code p1211. an help would be appreciated thank you.
Post Fiend
Joined: Sep 2003
Posts: 6,096
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From: Mesa AZ
Were the keys in the ignition when you restored power to the PCM?
Here is a good no start diagnostic guide. Scroll down to the 7.3 write up.
Diesel Diagnostic information for Powerstroke 6.0, 7.3, IDI 7.3 and 6.9 L, by Oregon Fuel Injection
Here is a good no start diagnostic guide. Scroll down to the 7.3 write up.
Diesel Diagnostic information for Powerstroke 6.0, 7.3, IDI 7.3 and 6.9 L, by Oregon Fuel Injection
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Yes there was power when I put the diode back in the truck. I know not exaclty what I was supposed to do. Lol
And yes the diode checked out good and just to be safe I switched it with the a/c diode after checking both of them. Im looking into that link with diagnostics that shake-n-bake posted. I appreciate the help. Anything else would be great.
And yes the diode checked out good and just to be safe I switched it with the a/c diode after checking both of them. Im looking into that link with diagnostics that shake-n-bake posted. I appreciate the help. Anything else would be great.
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Ok so I spent all day yeaterday troubleshooting. And I have gotten nowhere. The p1211 doesnt come up anymore. And it still doesnt start. I went through many wires and sensors. I also had another 7.3 to come over and try to help but he was stumped as well.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
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From: Spanaway
What tool are you using to scan with?
I am not sure with the 7.3 But and this
is a guess. Can you see live data with your scan tool?
With that you should be able to see where your getting
the no start from.
Sean
I am not sure with the 7.3 But and this
is a guess. Can you see live data with your scan tool?
With that you should be able to see where your getting
the no start from.
Sean
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