tuckin22

All,

Sorry in advance if this is the wrong section.

My current project requires me to omit the mechanical parking brake pedal. I have to use an electronic one. I have searched and searched and have not found any good info on how these factory ones are wired up.

Can anyone provide the module side pinouts as well as the switch side pinouts?

I wonder if these require to be wired through another module? Like the pcm or something like that.

I doubt it it will be simple but I like to use factory parts any where possible. Even in custom builds. I have checked out the e-stopp thing as well.

If if any of you guys are able to provide the info that would be greatly appreciated.

tuckin22

Nobody? I can get pinouts up to '09 GM but I need the '14 and newer pinouts for that whole EPB system.

Maybe even point me in the right direction.??

rkj427

GM Factory Service Manual may have the information you are requesting..........

should be in the Electrical section or possibly the Brake system areas..............

I have a source that I can check for you, and will send you a PM tomorrow.......

ersatz928

Subscribe to alldatadiy.com, for $17 a year, and get unlimited access to the 2014 Corvette Service Manual, complete with wiring diagrams and connector pin-outs. 2014 is the latest C7 manual they have, and I don't think much, if anything, has changed for 2015 thru 2017 C7s.

tuckin22

Cool deal. Thanks.
If that doesn't work out then I guess I will do as ersatz928 suggested.

ersatz928

The Parking Brake Control Module has :
One wire for the +12V power feed, thru a 50A fuse.
One ground wire.
Six wires to the parking brake switch.
Seven wires (6 are a digital data-bus, one is +12V IGN-ON) to the Instrument Cluster/Driver Info Center.

I am not sure you are going to get this to work without the digital communication with the Instrument Cluster.

rkj427

he provided photos of the documents I would have sent you.....

asked my contact about the needed digital communication with the Instrument Cluster and he was unsure if it would work without it as well........

tuckin22

Excellent!! I appreciate the help. I will see what I can do with this. It's a ton better than where I would have been.

Bill Dearborn

I just took a look at the Parking Brake section of the FSM and went over the theory of operation (which isn't complete). It seems that all of the circuitry to perform the job is included in the module. Usage as a parking brake only module might be precluded based on how easy it might be to adjust cable tension without a scan tool. Other than that it probably will work as a parking brake only. However, since the module gets wheel speed sensor data, engine torque, brake pedal position and other info through the GM LAN Connection it won't have some of the features the Vette Parking brake has like hill holding with automatic release when the car starts to move forward or being able to apply the parking brake while the car is in motion without locking it up.

Since the module does a self check when the parking brake switch is applied there is no way to know if it has failed other than the parking brake doesn't apply. However, that is how you find out if a mechanical parking brake isn't working so nothing really lost there. The cable tension thing is the big IF and will take further investigation to see if there might be a work around to using a GM scan tool.

Bill

tuckin22

Awesome Info Bill! I had to leave town for a few days. Will get into looking over schematics this week. But if as you say, then I would think that this would be the perfect option. Only thing aside from a parking brake that I would like to include is illumination stating it is applied. Which off first glance should be possible.
I was able to get ahold of a module quick. I can also ge the module side plug. Just need to locate the switch side plug. Erstatz928. Do you think you could get the switch side pinouts as well?

I really appreciate the looking into it and the help you all always provide.

Bill Dearborn

Don't get too excited about this yet. Like I said in my post the big issue may be the initial cable tension that is setup by the module. The FSM says that a scan tool is required for that. Not sure what would have to be done to simulate what the scan tool does.

Bill

ersatz928

Parking Brake switch connector

tuckin22

I know I shouldn't Bill. Will have to plan through this a tad bit before executing.

Thanks ersatz928!

ersatz928

Lots of additional info in the below link, including manual adjustment of the parking brake tension (there is a screw under a cap on the module which can be rotated to release or apply parking brake cable tension.

https://www.corvetteforum.com/forums...chematics.html

tuckin22

Hey thanks again ersatz928.

That is some one good info there. Sounds like reading on it, that the whole intention of the module is self contained. It might seem like the LAN is only for other possible ways to apply/release the parking brake i.e. Putting in gear and moving and whatnot.

I will I'll have to now get going on ordering some parts/pigtails so I can put this to the test.

Swedish GT40

Was the parking brake module ever tested without the instrument cluster?
I was thinking in the same paths as the thread starter and wants to check if it has been tested by anyone before.
I sure does look like it was meant to work "hard wired" with just the switch.

Argentimage

Did you get this to work?