ICP open circuit, no start after mods - Ford Powerstroke Diesel Forum
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Old 06-01-2014, 05:32 PM
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ICP open circuit, no start after mods

2005 6.0

I'm under the gun on this one - my Grandkids are expecting me to hook up the trailer on Tuesday and take them camping.

I just finished coolant flush, egr delete, oil cooler, VGT clean with new oil feed and drain tube, IPR screen and blue spring. Other than high deltas, was running good before but figured I would do as much as I could while I was in there. The information on this and other sites was invaluable!

Buttoned all up and of course it was no start. Thought at first it was all the air in the system but after numerous attempts and tests I think I have tracked it down to an open circuit on the ICP PCM wire. I do have 5 volts on the VREF wire to the connector. The ICP - C wire on the connector shows open circuit when tested with the pin on the disconnected PCM. It also was throwing a P2285 code.

My scangauge shows no ICP during crank

IPR 14.4
FMP 48.5

IPR 58.8
FMP 49.0

Still no start with ICP unplugged (ICP shows 1465 when unplugged)

First question - Would an open circuit alone prevent an unplugged ICP start?

I can't find the open circuit along the harness and was thinking of running a new wire from the PCM pin 29 to the C wire on the ICP connector.

Any thoughts on that solution?

Thanks in advance for any suggestions.

2005 F250, 6.0, Crew/4x4
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