Re: LS factory cruise control hook up
I am in the process of designing and building a tester module for this model of cruise control module (CCM) as I have replaced it twice on my 92 Buick Roadmaster without success. The only thing I am not sure about is how to simulate the input from the PCM (VSS) that goes into Terminal K (green wire) of the CCM. I know that it is a 5-volt signal, but that is all.
I found a GM video on YouTube regarding this CCM on a 91-93 Buick Roadmaster. It stated that the Speed Sensor Module (SSM) on the driveshaft produces an AC voltage of anywhere from 2-100 VAC. This signal is fed into the Vehicle Speed Sensor (VSS) which in turn feeds Terminal K on the CCM. But the video confused me on one point in that it stated that the voltage of that wire is actually a ratio of 1.1 volts per 1 mph. Here is the link to that video: https://www.youtube.com/watch?v=Q5SEy9GwQIw Advice and suggestions are most welcomed. Thanks! |
Re: LS factory cruise control hook up
How's aboot an actual speed sensor from jags that run? You could hook it up to a drill motor or something to spin it.
|
Re: LS factory cruise control hook up
|
Quote:
Posted via Mobile Device |
Re: LS factory cruise control hook up
I dont think either way is going to work. These things are very sensitive so just wiring it up and not being on a vehicle, it will likely not do anything. You cant even get one to work on a car that is on jack stands because as soon as it sets, its already going faster than the set speed and will instantly kick back off. As easy as these things are to put on a car, that's going to be your best tester.
|
Re: LS factory cruise control hook up
Just to be clear, im talking about a sensor like this.
http://speedscenewiring.com/ssw_zen/...-non-4l60e.gif Then, if you needed to, it would be super easy to wire it to a gm DRAC module and the module would put out the proper VSS signal. |
Quote:
Posted via Mobile Device |
Re: LS factory cruise control hook up
Could you please explain to me what the DRAC module is and just how you would wire it so as to provide the proper signal to Terminal K on the CCM? Thanks!
|
Re: LS factory cruise control hook up
My cruise quit working because I have no speedo signal coming out of the PCM. I tested my signal generator and it worked fine and the wires to the PCM have continuity. Is there anyway to test the output signal from the PCM?
|
Re: LS factory cruise control hook up
Quote:
|
Re: LS factory cruise control hook up
The drac module is an original piece of gm equipment. I think it was used on all tbi motors. But it's what accepts the vss signal on the tbi motors and sends out information to the cruise, speedo, and ecm on those tbi systems.
http://i120.photobucket.com/albums/o...ps57237fe4.jpg http://67-72chevytrucks.com/vboard/a...1&d=1365293919 |
Re: LS factory cruise control hook up
You can also break into them and change stuff around to account for different gear ratios and tires diameters.
|
Re: LS factory cruise control hook up
Here's some more info on them. They are super simple, plentiful, and cheap and I think they could easily be made to work for cruise and speed sensor input for the guys still running cable speedos. And I think this would even make it easy to add the newer style cruise control module to an older carbed vehicle.
http://614streets.com/drac.html |
Re: LS factory cruise control hook up
I have a 200R4 behind an LT1 ,there is no signal being generated by the transmission, I have a Dakota Digital signal generator hooked up to the speedo output on the transmission. I know the signal is being delivered to PCM.
|
Re: LS factory cruise control hook up
Quote:
|
Re: LS factory cruise control hook up
Quote:
|
Re: LS factory cruise control hook up
Quote:
|
Re: LS factory cruise control hook up
I was able to wire a regular bulb into my 3rd brake light system to verify that the LED tail lights were causing the problem, the CC works perfect now. I'm going to try one of the LED flashers and see it that will work before I wire in another relay, I already have a enough relays as it is under the dash......:lol:.
|
Re: LS factory cruise control hook up
Thanks to all the great info here I now have working cruise control
|
Re: LS factory cruise control hook up
Welcome from So Arizona!
Where is Bear de? I hope you find what you are looking for in this site, a lot of helpful folks on here |
Re: LS factory cruise control hook up
Quote:
Delaware east coast |
Re: LS factory cruise control hook up
LS1NOVA71 do you still have the smooth switch for sale?
Mark |
Re: LS factory cruise control hook up
Do you have a bigger picture? Looks like Pin "G" is 12V until the pedal is pressed - Normally closed, Pin D is 12V when the brake pedal is pressed - normally open. Am I right on this?
|
Re: LS factory cruise control hook up
Quote:
|
Re: LS factory cruise control hook up
Quote:
|
All times are GMT -4. The time now is 05:48 AM. |
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com