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I found some fuses in that area that were zip tied to the wire loom, but not on the firewall. Are you referring to those?Also there is a small fuse holder near the tim on the firewall under the hood
I seem to remember something about the sensors used to detect the crankshaft speed. I think I remember that on the C12 engine, it is common to have the RPM sensors go bad. There are two of them as I recall and if either of them goes bad, then the engine will not start. Sorry I did not mention this before.
So I am getting this also along with the Interface unable to verify the TIM too. My truck will only run off of ether also which I'm at right now is just a fuel issue but i know it has fuel up to the injectors. So now I'm resorting to an electrical issue.I found some fuses in that area that were zip tied to the wire loom, but not on the firewall. Are you referring to those?
None of my breakers were tripped. I removed some and tested them with a multi-meter. Then I took them all out and put regular fuses, didn't make any difference. I will test and/or replace the relays next time.
The rail has fuel. I also cracked the feed line and I am getting fuel from the mechanical pump. I will put a gauge on it later this week. It seems that the injectors are not getting a signal from the ecm. I saw the diagnostic module in the engine bay, the box and connection look to be in good condition.
View attachment 788491
This is the message I receive when I "test" the engine codes.
View attachment 788489View attachment 788490
My plan forward:
- test relays
- verify voltage at relays and breakers
- look for more fuses/breakers
- verify voltage at the ecm
I'd like to know if the engine is good/healthy so I might try and start it as if it was a standalone unit.
If that box is bad will the engine start? My black box on the firewall is bad and the diagnostics will not see the engine ECU. My engine will not start and I have replaced the engine ECU and cam/ crank sensors. The diagnostics will not see the engine ECU. Do you have a part number for that black box? Mine does not have any info on it. My truck will start on starting fluid. I am not getting any power to the injectors to start it. ThanksI agree with MAdams, check the fuses/circuit breakers. My truck was doing some strange things until I pushed the little reset button on every circuit breaker. It was so hard for me to see if one was tripped so I just reset them all. Some were tripped.
Also, under the hood, on the firewall, near the center of the truck, is a black box sitting horizontal. It is black with just one BIG connector going into it from the passenger side. It is the Diagnostics computer. Check that.
If it runs on ether it could be a fuel issue. Are you sure the engine is getting fuel? Is there smoke coming of of the exhaust when you crank it? White smoke is unburned diesel.
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