Auto PCM Flashed to Manual - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 1 (permalink) Old 04-09-2011, 11:53 PM Thread Starter
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Join Date: Apr 2010
Location: College Station, TX
Posts: 350
Auto PCM Flashed to Manual

My truck used to have an E4OD. Now it has a ZF 5 and the rest of everything that goes with a manual except I kept my original PCM. I drove it for about a year just fine that way but just had it flashed by DP Tuner to manual programming. The cruise control now doesn't work which I knew would happen I am just having a bit of trouble figuring out the wiring issue to get it back.

I got this from Jody Tipton at DP regarding the wiring:
"There is a communication line between the pcm and clutch position switch which even if hooked up goes to a different pin on the manual pcm.
Pin 29 for the auto harness has a tan and white wire which hooks to the OD cancel switch. On the manual pcm, that same wire is for the clutch
position switch. If you take the Tan/WH wire from the cancel switch and connect it to the tan/LB wire from the clutch position switch,
effeectively you give the pcm back the signal to cancel/engage the speed control.

The other part will be taken care of when you install the different transmission harness."

And this from another OBS guru:
-- "Pin 31 should be hot all the time, thats the brake pressure switch black and yellow.

Pin 92 should be hot when on the brake and not otherwise, that brake on/off switch and is lt green.

Pin 29 looks like it needs to be hot all the time as well. Thats the clutch pedal position switch input/nuetral safety. On an Auto the wire should be tan and on a manual looks like tan and lt blue but both go to the same pin.

if all those voltages check out it should work as long as you have a speed input."

-- "It was wire 29...I added voltage and everything works including the safety switches....it is so nice to have cruise!!!"

Anybody got any ideas on how to get the right voltage where it needs it? I'm not seeing the Tan/Lt Blu wire as Jody is describing otherwise I'd just splice them.

Jacob
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1996 F-250 Super Cab XLT 4x4 7.3L PSD: DP Tuner PCM, E4OD-->5 spd, Valair clutch, 3.55 LS, Dana 60, Rosewood stage I's, IDM-120, eFuel, 6637, 3" DP 225k

2006 Explorer Eddie Bauer 4.0L 5r55s 145k (hers)

2003 VW Jetta Wagon 1.9L TDI 5 spd mileage beater >40 MPG 230k
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