Cruise Control doesn't work?

I am bleeding my brakes today. If I get time I will try this today if not I will do it tomorrow and write you back. Thanks for your time and help.

Ok I tried this I pushed the off and warmer betton and then I pushed the low fan speed button all that came up was p25 and then lower. I did not start the car. I just turned the key and tried it. Did I do this right or do I need to start the car. Thanks.

u were in on paremeter 25.just keep hiting the low button until u see like cc brake,cc set,cc on and off.when u get there push the apropreite switch per the info panel.check all the cc premeters.u will see a 0 at the r/side of the panel.when u test the switch it tells u to push.the 0 turns to a x when u push the switch.that tells u the cpu is reciieving that switchs signal.

I went back through it and it went down and the last thing was p something. I think it was p.01. then it jumps back up to p 25 again.

it should go p25-low button p24 then p23 and so on until u go to p1.look for the cruise componets.

I used the hi button and it came up with E.0.0 and it went all the way up to 12 I think. What it did on one of them was you could here a click that was coming from the compressor. Another one was pushing the throttle down on thecircle and the circle would turn. I looked all the way through the computer and could not find the cruise control. Any idea. Thanks.

Maybe I am doing it wrong. Here is what I am doing. I hit the off and warmer button. Then I hold the low button then it comes up with p.25 and goes lower to p.1 or p.o then it goes back up to p.25 again.

when u pushing off and warmer buttons then release.what codes do u see?

f46

thats a low freon code.u need to check for power to the signal arm.

sorry I meant to ask you do Iuse ac or dc volts. Thanks

dc volts

ok I just did it on dc volts and it came up with 00.2 or 00.3mv at the end.

Hi I am looking at a chiltons manuel to diagnose a cruise control problem. I reposted sorry. But Is a speed sensor on the 1992 cadillac deville related to the cruise control. I have checked the fuse it was good. their is no leak in the vacuum. I changed the cruise lever out. I checked for power it has power. I bought a servo on ebay that was supposobly in working condition. Where is the stepper motor located. From the sounds of it. It is the thing that attaches to the throttle cable and the cruise cable. What is a transducer and how do you test it. Also is their a way to test the cruise servo. Thanks.

Yes, speed sensors are a vital part of the system as the system needs to keep the vehicle at the speed it was set at.
Transducer should mean the vacuum unit.

What is the problem you are encountering? Are the brake lights working?
Any component or circuits that is not working correctly?

yeah the brake lights work. The problem that I am having is that the cruise control system does not work at all. The light in the display use to glow orange and then when you set it it would glow green. The lights dont glow up at all and when I set the cruise speed it does not set it at all.

You are moving too far ahead. The indicator light has to show when the cruise control system is turned on. when it does not glow, it can mean either no power supply to it, the switch is bad or you have a missing ground circuit.

Get a DVOM or testlight and pull the switch out. Ensure you have battery voltage at the Brown wire.

I have a digital voltmeter. What do I set it to volts dc or ac. What switch do I pull out the turn signal switch that attaches to the collum. It has the cruise switch on it to turn it off and on. Thanks.

DC with range of up to 20. If you can get at the wiresocket, you need not take out the whole thing.

Ok so I was looking for the brown wire but could not find it. Here are some pictures maybe I am looking in the wrong place.

Wire colors seems to be different from the schematic in our database.

There are 4 wires, ensure at least one of it has battery voltage when ignition is turned on.

Hey sorry I havent gotten back to you. I had a few things come up. I will check this tomorrow. I have a lot of spare time on my hands tomorrow. I will let you know once I test this. Thanks.

u should be able go in the cpu and ck for cruise codes.just push the off and warmer buttons on the a/c head until you see all segments light release.as it goes thru the cpus.write the codes down.then if no codes are set then its a vacuum problem.next test the small hose at the servo for vacuum.then remove the large hose and blow air through the hose with you mouth.u should not be able to blow into it.start here then come back. gl

Ok I blew through the large hole and you can not blow through it. Their is no codes in the system. The small hose has a good vacuum. The number 7 fuse is good I changed that out today. I checked for the voltage before I put the fuse in. It had 12.2 volts which is good. I got confused on the diagram. With the grey pink black and dark blue. How do I check this. Do I put the positive volt meter on one and then put the negative probe on the other. If you could explain on how to do this I would greatly appreciate it. Thanks for all your time and help.

can u blow through the large hose?

The big hose going into the car where the brake switch is mounted. If that's what you are talking about then no. Thanks.

turn the key on put it in rev.do the rev. lights work??

Yeah the reverse lights work just used it today and saw the lights.

does the yellow light come on on the switch?

if its the speed sensor u would have a code.

No it does not.

sorry had dinner .i forgot is there a dash switch or it turns on by the lever?

That's fine it is on the lever.

cool your on you get no codes from the l/side fuel data center.it just gos to 70

Yeah their I'd no codes. It just shows 7.0 that is it.

u needed to do what khl said.test for power with key on on the pink wire and ground on black.as simple as that.

Ok so I just did this a few seconds ago after you posted I put the positive on the pink wire and the negative on the black wire. It showed 12 volts exact on my volt meter with the car on the run position not started.

go to 7.0 then turn on the cruise it should say 7.1 hit the brake 7.2 set button 7.3 resume 7.4

Ok so I am going to turn the car to the run position and do the off a warmer button and let it go to the 7.0 then turn the lever on and it should go to 7.1 then hit the brake and it should go to 7.2 then hit the set button and it should go to 7.3 and then hit resume and it should go to 7.4 is this correct or do I have to start the car when I do this and drive it or just start it or just the key to the run position. Thanks.

key on this is a switch test.it tells u if the cpu is receiving a signal.sounds like that servo is ng.