Case Maxxum cvx 2016 autoready with CAN-board

[bitfieldfarm]

Ok, this is no success so far, but maybe some day…

The Case has been discussed on Telegram before, but I thought I’d document it here for further help, and maybe a solution in the end.

Hope you dont mind if I tag some of you I’ve seen around Case-topics…
@andyinv, @buched, @FiveFinnishFarmers

Facts:

• It is auroready. According to serial nr, and buttons in armrest and pillar are present.
• Also according the serial number, it is CAN
• There’s no NavController
• Jumped the connector in pillar to enter service menu, but there’s no menu option for calibration or activating autosteer.

When pushing the steer-button on the armrest, there’s a beep.

Tried following the Case CVX175 over CANBUS
But no luck.

According to older Telegram chat and the cables behind passanger seat I’m not sure it is CAN.

Some photos:

[Larsvest]

To me the connectors look like analog, so check fivefinnishfarmers, how to do.

Case IH Puma 230, autosteer ready

Finally have some time to share this project. Basic idea was to create as “plug and play” solution as possible for autosteer ready CNH machines. I tryed to use the original wiring harness as much as possible, and it did work great with the steer valve, WAS and pressure sensor. The autosteer engage valve is a little harder but managed to do a little workaround for that. setup: PCB Kaupoi mod V4 F9P CMPS14 Cytron Lenovo Miix 510-12ISK CHEMATICS Chematic for pcb, contains wiring of WAS, o…

[bitfieldfarm]

If analog, is the CAN-board useless then?

[Larsvest]

Which can-board?

[bitfieldfarm]

The AOG-board

[Larsvest]

Does it have a version number?

[Larsvest]

@bitfieldfarm

The AOG-board

A picture will tell a lot.

[bitfieldfarm]

Tony can-bus board.

[Larsvest]

You could use it as a panda board .
Right now I am driving in a tractor with a teensy connected as panda type board, and an old v2 type pcb.

[Raycorp]

How does this help comnunicate with case canbus?

[bitfieldfarm]

From fivefinnishfarmers topic:
"Normally in the factory when autosteer is installed they switch the wire coming from WAS to the other plugged connector at the steer ready harness. From there the signal goes directly to navcontroller(X716) and maybe the navcontroller sends WAS value forwoard via canbus… "

Maybe this explains why serial says CAN-bus and wires don’t?

[Larsvest]

I think they changed to canbus autosteer around 2019 2020.
The 2018 N H t6 175 autosteer ready, I made AOG autosteer on in 2021 had canbus hydraulic output block at the back.

[andyinv]

Use the 40-pin connector and Cytron to drive the steering.

Wire like: AmpsealCase - Google Drive

[bitfieldfarm]

Ok. So if I get this correct we:

• add cytron to the tony-board
• And then split WAS like fivefinnishfarmes did (if needed)
• And no need for the activation and calibraion menu.

I guess that will make AOG steer and read WAS but not make steerbutton in armest work. Correct?

[andyinv]

No, you use an AIO board. No CANBUS in this situation for WAS/steer. You can use the CAN to use the button on the armrest to engage however.

[bitfieldfarm]

Uh… ok

@andyinv

You can use the CAN to use the button on the armrest to engage however.

Can he?, even if he cant find the autosteer activation in the H3 (or whatever it was…) menu item?

[BGunics]

I’d use an AIO board.
Power WAS from it then splice the signal connection so it goes back to the factory ECU (that way the differential and auto 4x4 still works)
You’ll likely need the lock and cytron output to control the valves.

Disengage on a similar Magnum was in the steering column. I had to supply 5V and it pulled it to ground.

On that said magnum I was able to find the button on CANbus, but we decided with the operator that a pedal would be nicer for him as he’s using the hand throttle.

I think AIO will fit in the same place as you found those connectors.

[andyinv]

If the button is on the panel, then it sends a signal out and most likely over CANBUS.