No Cruise, everything else good?

[man-o-war]

New member here, 3rd PSD

Started with 99 ExCab 6sp, then 00 Crew 6sp, now 01 Crew auto (all were 2wd). Kept using the forum without registering to keep me running, and its an awesome resource!

Having issue with cruise control.

This is what WORKS:

HORN
3RD BRAKE LIGHT
LICENSE PLATE LIGHTS
CRUISE BUTTONS BACKLIGHT
FUSES 13 & 19 ARE GOOD
RECALL DONE (BRAKE SWITCH HARNESS)
NO DASH WARNING LIGHTS OF ANY KIND!!

What DOESN'T:

CRUISE CONTROL

I cant get the cruise to work, never worked since I had the truck (about 41k miles, now 223k).

Pulled the airbag, everything behind there is plugged in and seems to work.

Is there a plug under the dash where I can test voltage and determine why I am not getting signal into the PCM to trigger the cruise?

Thanks for any tips. I am diesel mechanic, and have checked everything I could think of after doing some research, no dice so far.

Thanks fellas!

[vista461]

Not sure if it's the same setup as my 01 F150 Screw, but when that happend to mine, it was the actual switch in the master that the recall harness plugged into.

[TheFordman87]

I had an 03 f250 5.4l it started only working some times then just quit all together. Ford told me it was the cruise switch itself. I would have replaced it but the truck got totaled the next day.

[man-o-war]

That could make sense, during recall visit dealer told me they only make sure switch is not leaking, they didnt care if it was working or not. If no leak, they just install harness. If it leaks, I would have gotten new switch, and I presume harness is not needed in that case.

Is there a way to short a switch or harness to trigger the PCM/dash to flash the cruise control button?

Read somewhere that you can test CC system by engaging parking brake, then pressing and holding OFF button on steering wheel, and then turning the key. This should light up CC dash light, or same light will flash codes I guess. I cant get mine to turn on or flash at all

Originally Posted by vista461

Not sure if it's the same setup as my 01 F150 Screw, but when that happend to mine, it was the actual switch in the master that the recall harness plugged into.

[Cjcross22]

Could be the clutch position switch.

My cruise never worked and I got it working by replacing the switch.

Here is the thread I created when it happened, read through it if you like.

Cruise Control


Edit: Just read that your current truck is an auto, so its not that haha

[Freedombyforce]

a couple of things I would check.....


1. Make sure the Red/Lt green wire on the brake pedal position sensor has 12 volts when the brake pedal is pushed in.

2. Looking at the wiring schematics, its hard to tell about the brake pressure switch ( on the master cylinder). But what I think is that the Red wire needs 12 volts in run and start. The Black/Yellow wire is the "out" wire from the switch. I think it will have 12 volts until there is brake pressure. and then go to zero. However, it could be that it only gets 12 volts when it has pressure on it. Regardless, the BK/YE wire should change when you push the brakes in.

Also after mine had the recall done it has several fuses in that new harness. Check all of those.

3. Make sure the Triple Function Jumper is plugged into the Clutch Pedal Possition Switch plug. The harness and plug is tucked up under the dash above where you would have a clutch pedal. You should have the jumper, which looks like a simple dust cover for the plug, plugged into the harness where it dead ends. (this is a long shot unless you think the previous owner liked screwing with stuff)

4. Make sure your overdrive off button on the shifter works as it should. As in it turns off overdrive when you are going down the road.

5. Check all of your fuses. You can do this with a small flashlight in the dark with the fuses in place. Tilt your head just right and you can see through the fuse.

If all of that checks out, my personal opinion would be the Clock Spring. I believe that thing could break one wire, screw up your cruise but allow everything else to work. I had to replace mine awhile back, but my horn wasn't working either.

good luck.


On Edit: I would go ahead and replace the brake pressure switch if Ford didn't do it. Its only a matter of time before the POS starts leaking if it already hasn't. Its nothing to it, just unscrew the old and screw in the new. Just dont push the brakes when you have the old out and you don't even have to bleed them.

[man-o-war]

Freedom, thanks for a detailed answer, I already picked up brake switch from rock auto for $10, gonna try that first. Good to know i dont need to bleed it, i was worried it would leak all of the canister fluid when replacing. Mine is auto, but i will look to see if there is that terminator in the clutch pedal switch. O/D button works good and revs jump up when pressed.

[fasterraptor]

i had the same problem mine quit working after the dealer did the recall and i had to send my pcm out to be reflashed only cuase the dealer wanted 150 to reflash verses 60 from a tunner when i got pcm back it has worked perfect no problems

[man-o-war]

Mine has not worked before recall either. I have Diablo programmer can I flash it myself?

[fasterraptor]

no diablo programmer wont do the job its got to be reflashed with the stock program that the pcm was sent out with from factory and only ford and dp and i think php have those and can do it but it may not even be your pcm only someone with a snap on scanner or auto scanner might be able to help narrow down your problem thats how i figured out mine and had to get it reflashed