FS: VR - VY BCM Simulator

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FS: VR - VY BCM Simulator

Postby pman92 » Sun Jan 13, 2019 11:01 am

This is a BCM simulator for VR-VY.
I came up with this after experimenting with ALDL on an Arduino. Big thanks to this forum for a bucket load of information and VL400 who answered quite a few questions I had.

Features are:
- VR-VS VATS response.
- VT-VY VATS response, including automatically linking to PCM if required.
- Option to disable VATS with a manual kill switch so engine will not start (2 wires included, 1 will disable when connected to ground, the other when connected to +12v)
- VS-VY low speed cooling fan relay control output (retain a dual speed cooling fan)
- VT-VY oil pressure warning lamp output
- VT-VY engine malfunction warning lamp output
- VT-VY A/C request input (retain the standard pressure transducer and have the PCM control the A/C compressor)
- Use it to allow data transmission from PCM to VT-VY dash cluster
- SRS/ABS/ECC simulation to prevent dash cluster warning lights/trouble codes.

If using with a VT-VY PCM, it will act as a standard BCM to broadcast the heartbeat and module requests (all the chatter) on the data bus. This will allow other factory modules to communicate as normal (for example, you can use a complete VT-VY dash cluster with your VT-VY PCM).

It will respond as normal to disable/enable chatter commands so the chatter doesn't get in the way of a scan tool/logging/tuning etc.

It will also simulate SRS, ABS + ECC data packets. This prevents the SRS/ABS warning light coming on or trouble codes being logged by the dash cluster. This is currently hard-coded, but with the next batch of PCB's can be disabled by removing a jumper (so you can actually use an SRS, ABS or ECC module).

It is not very big (80x40x20mm).
It comes in a case and with plenty of wire to work with.
Installation instructions are included.
All features are optional, just don't connect the wires you don't need.

$160 which includes postage Australia wide

20181109_134745.jpg
Last edited by pman92 on Mon Jan 28, 2019 9:51 am, edited 1 time in total.
VR-VY Holden BCM Simulator: LINK
Ford Smartlock Bypass Module: LINK

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Re: FS: VR - VY BCM Simulator

Postby Holden202T » Mon Jan 14, 2019 11:00 am

nice one!

so it runs on an arduino ?

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Re: FS: VR - VY BCM Simulator

Postby pman92 » Mon Jan 14, 2019 12:40 pm

It runs an Atmega328 (same microprocessor as an arduinp uno) on a dedicated PCB I had made for the purpose.
The development was initially done on an arduino and then on an atmega328 on a breadboard/bench setup I made.
The code itself was written in the Arduino IDE
VR-VY Holden BCM Simulator: LINK
Ford Smartlock Bypass Module: LINK

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Re: FS: VR - VY BCM Simulator

Postby Biggvl » Mon Jan 14, 2019 12:46 pm

Love it, this will be great for some of the conversions being done out there :thumbup:
According to chemistry, alcohol is a solution...

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Re: FS: VR - VY BCM Simulator

Postby pman92 » Mon Jan 28, 2019 10:03 am

I've made another improvement and updated the first post.

It will now simulate SRS/ABS/ECC messages so the warning lights do not illuminate and DTC's do not log if using a dash cluster.
This is currently hard coded, but once more PCB's arrive, future versions will have 2 removable jumpers to disable SRS and disable ABS/ECC. (So you can use it with a SRS, ABS or ECC module fitted)

Also had a question about how the VATS linking works:
At Ignition on it waits a short time for a VR or VS PCM to send it's VATS message. If none is received, it sends a VT-VY message 40 (PCM data request). If there's no response, it goes back to waiting for a VR/VS PCM for a short time. If a VT-VY PCM is connected, it will respond.
If it's the first use, the PCM won't be linked to the BCM simulator. The BCM simulator will see this in the message 41/pcm response data. The BCM simulator will then unlock the PCM and link to it automatically. Once linked it will resend a message 40 and should get a message 41 response with VATS OK, if not it will retry the link. This whole process takes less than a second and only happens at first use, after that VATS will pass instantly. It will redo it every time it finds the link is broken (a different PCM was fitted), so it isn't "locked" to only 1 PCM ever and can be reused indefinitely.
Once the BCM simulator sees VATS is OK it will start the BCM data simulations (heartbeat, all module requests, etc).

It only simulates VT-VY BCM data if connected to a VT-VY PCM. If it finds a VR/VS PCM it will stay quiet (only do VS low speed fan).
VR-VY Holden BCM Simulator: LINK
Ford Smartlock Bypass Module: LINK

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