E46 Canbus Thread

Support for EMU BLACK device
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cmj
Posts: 21
Joined: Mon Dec 05, 2016 6:48 pm

E46 Canbus Thread

Post by cmj » Mon May 22, 2017 7:36 pm

I've seen quite a few threads regarding E46 / Canbus support.. It might be helpful if it's all in one spot.

I just wired into the canbus and everything is working as it should. Temp gauge is weird, but I understand that the cluster processes that information. Tach is smooth, and check engine light works.

My question is regarding speed.

Does the DME put the speed on the canbus? (i no longer have DME). I know that the MS43 has an input for unfiltered wheel speed..

What i'm saying is, my dashboard shows speed correctly, but choosing 'canbus' in software does not register speed there. Am I going to have to wire in the wheel speed sensor?

magelius
Posts: 35
Joined: Mon Oct 12, 2015 9:41 am

Re: E46 Canbus Thread

Post by magelius » Mon May 22, 2017 8:35 pm

Original speed signal is processed in the acs/dsc/abs unit and speed signal is send to the original dme with separate wire. The pin is 40-pin black connector pin number 22. Try to use this, should work?
But individual wheel speeds should be also available in CAN messages. Don't know does the EMU support that information?

cmj
Posts: 21
Joined: Mon Dec 05, 2016 6:48 pm

Re: E46 Canbus Thread

Post by cmj » Tue May 23, 2017 2:18 pm

magelius wrote:Original speed signal is processed in the acs/dsc/abs unit and speed signal is send to the original dme with separate wire. The pin is 40-pin black connector pin number 22. Try to use this, should work?
But individual wheel speeds should be also available in CAN messages. Don't know does the EMU support that information?
Based on this website: https://www.bimmerforums.com/forum/show ... us-project

The following data is available:

Code: Select all

ARBID: 0x1F0 (ABS)
Individual wheel speeds:
Signal wheel 1: startbit 0, bit length 12, Intel LSB, unsigned, gain 1/16 (0.0625) (byte0 + next 4 bits of Byte1)
Signal wheel 2: startbit 16, bit length 12, Intel LSB, unsigned, gain 1/16 (0.0625) (byte2 + next 4 bits of byte3)
Signal wheel 3: startbit 32, bit length 12, Intel LSB, unsigned, gain 1/16 (0.0625)
Signal wheel 4: startbit 48, bit length 12, Intel LSB, unsigned, gain 1/16 (0.0625)
I don't believe with the current canstream settings in the software, I can correctly input this message. Any input?

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Jadzwin
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Re: E46 Canbus Thread

Post by Jadzwin » Fri May 26, 2017 9:40 pm

Hi!

The problem is that the ABS is on another CAN bus. To make it work you need to connect CANs toogether and use user defined CAN to check if it work.
Then we can add this into the software

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Jadzwin
Site Admin
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Joined: Tue Aug 12, 2014 11:27 pm

Re: E46 Canbus Thread

Post by Jadzwin » Fri May 26, 2017 9:40 pm

Hi!

The problem is that the ABS is on another CAN bus. To make it work you need to connect CANs toogether and use user defined CAN to check if it work.
Then we can add this into the software

magelius
Posts: 35
Joined: Mon Oct 12, 2015 9:41 am

Re: E46 Canbus Thread

Post by magelius » Mon May 29, 2017 7:36 pm

What about AC request via CAN? Does EMU support this message?

cmj
Posts: 21
Joined: Mon Dec 05, 2016 6:48 pm

Re: E46 Canbus Thread

Post by cmj » Tue May 30, 2017 2:42 pm

Jadzwin wrote:Hi!

The problem is that the ABS is on another CAN bus. To make it work you need to connect CANs toogether and use user defined CAN to check if it work.
Then we can add this into the software
I will look into this and report back. Thanks!

magelius
Posts: 35
Joined: Mon Oct 12, 2015 9:41 am

Re: E46 Canbus Thread

Post by magelius » Tue May 30, 2017 9:25 pm

Jadzwin wrote:Hi!

The problem is that the ABS is on another CAN bus. To make it work you need to connect CANs toogether and use user defined CAN to check if it work.
Then we can add this into the software
What do you mean by "other CAN-bus"? There is only one actual CAN-bus and the other ones are BMW specific. According to BMW WDS, the wheel speeds are exchanged via CAN-bus. Two pictures attached.
Attachments
image.png
image.png

cmj
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Joined: Mon Dec 05, 2016 6:48 pm

Re: E46 Canbus Thread

Post by cmj » Tue Sep 12, 2017 3:05 pm

I would like to get wheel speed via canbus and i'm to a point where I need to use it in my calibration.

Has anyone looked further into this, or gotten it figured out?

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