VF Commodore Steering Rack

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Tre-Cool
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Re: VF Commodore Steering Rack

Post by Tre-Cool »

Holden202T wrote: Wed May 29, 2024 8:21 pm sweet thanks Tazzi, and its in line with what im seeing below :D

so i probed the steering wheel angle sensor tonight and got this from it.

IN ts: 396124546 id: 1E5 l: 8 data: 44 00 59 10 95 00 01 7E
IN ts: 396124562 id: 1E5 l: 8 data: 44 00 70 30 91 00 01 B1
IN ts: 396124562 id: 1E5 l: 8 data: 44 00 87 50 8C 00 01 E3
IN ts: 396124578 id: 1E5 l: 8 data: 44 00 9C 70 83 00 02 0F
IN ts: 396124593 id: 1E5 l: 8 data: 44 00 B0 10 7F 00 01 BF
IN ts: 396124593 id: 1E5 l: 8 data: 44 00 C4 30 7F 00 01 F3
IN ts: 396124609 id: 1E5 l: 8 data: 44 00 D8 50 7D 00 02 25
IN ts: 396124609 id: 1E5 l: 8 data: 44 00 EC 70 78 00 02 54
IN ts: 396124625 id: 1E5 l: 8 data: 44 00 FE 10 72 00 02 00
IN ts: 396124640 id: 1E5 l: 8 data: 44 01 0F 30 6B 00 01 2B
IN ts: 396124640 id: 1E5 l: 8 data: 44 01 1F 50 60 00 01 50
IN ts: 396124656 id: 1E5 l: 8 data: 44 01 2C 70 53 00 01 70
IN ts: 396124671 id: 1E5 l: 8 data: 44 01 39 10 51 00 01 1B
Steering Wheel Angle
Steering Wheel Angle
1E5.PNG (16 KiB) Viewed 2629 times
What would be interesting is if we can get a hold of a calibration file for it & if we could adjust what it needs to recieve/transmit on the main canbus. Just about every late model ecu would transmit the main engine parameters. Wheel speed data would come from the EBCM, but if you have another module transmit or are able to tell where it's coming from (if it's like the ecm/tcm) would make it possible to retrofit to say the VE or other ls swapped cars with canbus ecu's.
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Tazzi
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Re: VF Commodore Steering Rack

Post by Tazzi »

Tre-Cool wrote: Wed May 29, 2024 9:34 pm What would be interesting is if we can get a hold of a calibration file for it & if we could adjust what it needs to recieve/transmit on the main canbus. Just about every late model ecu would transmit the main engine parameters. Wheel speed data would come from the EBCM, but if you have another module transmit or are able to tell where it's coming from (if it's like the ecm/tcm) would make it possible to retrofit to say the VE or other ls swapped cars with canbus ecu's.
I can grab any OS/cal files for them happily. They would be the raw update files and not a dump including boot sections ect that you would get inside the module itself.. but its still a start?
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Holden202T
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Re: VF Commodore Steering Rack

Post by Holden202T »

@tre-cool, what is that your using to see all that info ?

i guess custom firmware would be the dream goal ... and its probably just a matter of telling it what can data to look for if its in another vehicle.

i assume any firmware update for them would be done over can .... i'm happy to try and probe the one i have here to get whatever info out that we can ?

i have a usb to can sniffer (basic data) and an MDI if any of that helps the cause ?

i've also ordered the rack wiring connector so should be able to make a bit of a better harness for bench testing it!
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Re: VF Commodore Steering Rack

Post by Tre-Cool »

Tazzi wrote: Thu May 30, 2024 9:56 am
Tre-Cool wrote: Wed May 29, 2024 9:34 pm What would be interesting is if we can get a hold of a calibration file for it & if we could adjust what it needs to recieve/transmit on the main canbus. Just about every late model ecu would transmit the main engine parameters. Wheel speed data would come from the EBCM, but if you have another module transmit or are able to tell where it's coming from (if it's like the ecm/tcm) would make it possible to retrofit to say the VE or other ls swapped cars with canbus ecu's.
I can grab any OS/cal files for them happily. They would be the raw update files and not a dump including boot sections ect that you would get inside the module itself.. but its still a start?
Happy to look at whatever. I'll throw it into ghidra & see what it can make of it. I can't imagine a full flash is going to be that big?
Holden202T wrote: Thu May 30, 2024 3:09 pm @tre-cool, what is that your using to see all that info ?

i guess custom firmware would be the dream goal ... and its probably just a matter of telling it what can data to look for if its in another vehicle.

i assume any firmware update for them would be done over can .... i'm happy to try and probe the one i have here to get whatever info out that we can ?

i have a usb to can sniffer (basic data) and an MDI if any of that helps the cause ?

i've also ordered the rack wiring connector so should be able to make a bit of a better harness for bench testing it!
Vector CANdb with a dbc file that was shared with me.

I'm surprised your picking up so many broadcasts on the primary bus. Most if not all of them should be broadcasts coming from other modules & not the rack.
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Re: VF Commodore Steering Rack

Post by Holden202T »

Tre-Cool wrote: Thu May 30, 2024 9:26 pm I'm surprised your picking up so many broadcasts on the primary bus. Most if not all of them should be broadcasts coming from other modules & not the rack.
hmm not sure if i specified before, the previously posted logs were from my VF Commodore daily driver .... then the logs of the rack and the steering wheel angle sensor are on the bench devices taken out of a VF my dad bought to harvest the LFX / auto for a conversion.
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Re: VF Commodore Steering Rack

Post by Tazzi »

There’s actually a perfect module for this job to allow modifying CAN frames on the fly for this.

It’s made by Mitch Minton (I hope I got that right!), here’s a link to the YouTube video: https://youtu.be/_t7AN1rdTPs?si=RhGV4ZO8dcCdCbko

I have used this and would allow taking any of the live data then modify the ID or data to output a different frame if needing to make it work with something else.

I have my own modules to do this, but this is a very tidy and car ready kind of module that could be made to be plug and play for conversions.

This would actually be ideal also for that other thread regarding the transmissions which I’ll link that there too.
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Re: VF Commodore Steering Rack

Post by Holden202T »

im hoping to run this in a car that has $11P OS so whatever i do is going to be custom unfortunately, but thats not an issue, provided i can get the info i need to make it work out of the VF then getting the signals needed from $11P should be the easy part.
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Re: VF Commodore Steering Rack

Post by Tazzi »

Ah right right. CAN to ALDL, that’s easy enough.

What data exactly are you needing for the steering rack?
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Re: VF Commodore Steering Rack

Post by Holden202T »

im still trying to work all that out ... at this stage im trying to just get the rack to work on the bench as in provide power assistance.

today i received the wiring plug for the rack so im hoping to make up a tail that i can put power/ignition/can signals into it and connect it to the steering wheel angle sensor and see what that gets me, so far anything i put into changes its error status without the angle sensor.

pretty much if i can get it to work on the bench then i make an interface to take aldl signals and convert them to CAN is the rough plan.

oh and i need to somehow mount the angle sensor :D
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Re: VF Commodore Steering Rack

Post by monaro308 »

Just a tip to anyone running EPS.
NEVER EVER turn the steering from the wheels with a car sitting on the hoist or elevated.
The internal rubber toothed belt can come/spin/shear off the drive motor.
ONLY and ALWAYS turn the wheels from the steering wheel.
A new belt can be replaced, but the belt tension must be adjusted with a frequency tool.
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