E350 a/t schematic
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E350 a/t schematic
I have a 2003 e350 diesel shuttle bus with 143,000miles I am converting to a camper/toy hauler. I have been getting some strange codes and have trashed a $3000 tranny. Three mechanics say the power train control module is not getting a signal from the turbine shaft speed sensor and that I need to check the wiring from the sensor to the control module for continuity. One printed out the e350 diesel a/t control module schematic for me from Mitchel Repair Information, but the diagram shows a non-existent circuit, a blue and white wire running directly fron the tutbine shaft speed sensor to the power train control module. The blue/white wire begins at the turbine speed sensor, but is not connected to the power train control module as shown in the diagram.There is simply no blue/white wire at the control module. DOES ANYONE HAVE A CORRECT SCHEMATIC FOR THIS TRANNY/CONTROL MODULE? 
Thanks,
Doc
Thanks,
Doc
Last edited by dockwatson; Nov 5, 2011 at 07:13 AM. Reason: correct error
Fleet Owner
Joined: Aug 2010
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From: Reynoldsburg, Ohio
I've never had a lot of faith or confidence in any wiring information not coming directly from Ford. You might want to cruise eBay's Motors section for a shop or wiring manual for your chassis-----they're quite plentiful there, decent priced too!
I wouldn't think the shuttle bus converter altered the PCM wiring from factory configuration but I do wonder if the schematic printed out for you actually fits the chassis/engine/year combination?
I wouldn't think the shuttle bus converter altered the PCM wiring from factory configuration but I do wonder if the schematic printed out for you actually fits the chassis/engine/year combination?
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I found another year (1997) schematic and it shows the same circuit. I have a theory I am going to check. The dk bl/w wire may be a common ground, so it doesn't actually go to the PCM except through the chassis. When I pulled the PCM, it was not secured to the chassis...so maybe it was supposed to be connected through a chassis ground, and since the pcm was not grounded, the dk bl/w wire was not connected?
Just checked it, and my theory is wrong, no continuity between the wire and the chassis...
Just checked it, and my theory is wrong, no continuity between the wire and the chassis...
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Guess I'm just cheap. I contacted one of the companies listed on eBay. The 2002 diagram is $29, but they want $50 for the 2003. I just need one diagram, for the automatic transmission, so $50 is a bit steep. Whatever happened to free info on the web?
Fleet Owner
Joined: Aug 2010
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From: Reynoldsburg, Ohio
Dock I'm sure your info is out there on the web but I don't know the specific sites---sorry 'bout that!
You could also post this in one of the forums under the Misc category on FTE----lots of tranny specialists there. Try this link: Clutch, Transmission, Differential, Axle & Transfer Case - Ford Truck Enthusiasts Forums
You could also post this in one of the forums under the Misc category on FTE----lots of tranny specialists there. Try this link: Clutch, Transmission, Differential, Axle & Transfer Case - Ford Truck Enthusiasts Forums
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