Cruise control switch

Questions about the Elite Series ECU's? Ask here.
Orangeblue
Posts: 114
Joined: Mon Apr 08, 2019 5:54 am
Location: Germany

Cruise control switch

Postby Orangeblue » Sun Nov 22, 2020 9:12 am

I'm currenty thinging up a DBW set up...
And if you have DBW it would be a shame not to utilise the cruise control function.

However one thing i can't figure out is the cruise control buttons, i want/have to use the factory cc switch.
As you can see the factory switch has 4 wires.., so 3 inputs into the CC module/ECU.
And the Elite only requires one input with a varying voltage. How would one do this with the given switch.

Image
RT: 12V
GR: Cancel
GN: Set
BL: Resume

I looked into a voltage devider for the Set/Resume switch and thought about wiring the Cancel button in
serie with the brake pedal sensor.
Anyone have a better idea feel free to jump in.
Image
'92 Opel Omega Wagon
'94 Opel Astra 'vert

Orangeblue
Posts: 114
Joined: Mon Apr 08, 2019 5:54 am
Location: Germany

Re: Cruise control switch

Postby Orangeblue » Mon Dec 07, 2020 1:18 am

I may have come up with a solution for set and resume...

Image
Attachments
Omega CC to Elite - Kopie.JPG
Image
'92 Opel Omega Wagon
'94 Opel Astra 'vert

Halfwalker
Posts: 18
Joined: Sat Dec 07, 2019 1:44 am

Re: Cruise control switch

Postby Halfwalker » Wed Mar 10, 2021 5:52 am

Have you checked the wiring diagram for the cruise control for the car ? It probably already has a voltage divider built in so the stock ecu knows what button is being pressed.

For example, here's the cruise-control switches for a 94 Toyota Supra
Screenshot from 2021-03-09 13-43-37.png


In this case both pins 18/Blue and 19/Red-Yellow are tied together into the Elite pin for cruise control which has a pullup enabled. Pin 17/White-Black goes to GND in the stock harness.

Main closed -> direct to GND
Resume/Accel closed -> resistance 1
Set/Coast closed -> resistance 1 + resistance 2
Cancel closed -> resistance 1 + resistance 2 + resistance 3

Orangeblue
Posts: 114
Joined: Mon Apr 08, 2019 5:54 am
Location: Germany

Re: Cruise control switch

Postby Orangeblue » Wed Mar 10, 2021 10:21 am

Yes, i did. Even cracked the switch open to look at it.
No logic circuit in it, just a small pcb...

The factory cruise control is not intergrated into the engine control unit, it is seperate.
Kinda like a standalone CC, it just keeps the thottle open via a second throttle cable...
The feed gets redirectet to On/Set/Accel and Resume or cut to cancel the CC event.

I have the stuff for the voltage devider on the bensch, just no time atm...
Image
'92 Opel Omega Wagon
'94 Opel Astra 'vert


Return to “Elite Series”

Who is online

Users browsing this forum: No registered users and 2 guests