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[SOLVED] BMW F12 MISSING ECU branches (KCan1 + K-Can3) and MOST ring break
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16-10-2018, 13:43 PM,
(This post was last modified: 23-11-2018, 19:49 PM by the_outlaw.)
Post: #1
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[SOLVED] BMW F12 MISSING ECU branches (KCan1 + K-Can3) and MOST ring break
Hello there.. I am having problems with my BMW F12 LCI. The car had a front crash. Right headlight wire was damaged as well as the camera cable..
I repaired the front (Headlights still not installed) and the wire, but the tree on ISTA for K-Can1, K-Can3 and other ECUs like KOMBI and AMPT are missing..  Anyway I have attached 2 photo of the ECU Tree from ISTA how they should be and how they are now. Hope anybody can help me. Forgot to say, that the missing ECU's (marked in red) aren't working. Only Kombi. Is there a way to initialize K-Can and MOST Bus? I mean there need to be a way to restart the system? |
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![[+]](https://cartechnology.co.uk/images/CarTechnologyTheCure/collapse_collapsed.png)
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17-10-2018, 11:48 AM,
Post: #2
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RE: BMW F12 MISSING ECU tree/branches (KCan1 + K-Can3) and MOST ring break in fault codes
Has anyone got a hint? I would appreciate any tip.
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23-11-2018, 19:45 PM,
Post: #3
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RE: BMW F12 MISSING ECU tree/branches (KCan1 + K-Can3) and MOST ring break in fault codes
Solved the problem after my last post. First I saw the amplifier is missing. Bought a new one and flashed it then the branches came back. The AMP is a Master ECU for Slave Most ECUs.
After that everything was working expect the KCAN3 Tree, which was all red. I checked all fuses and everytime I put a new fuse in TPM, the fuse cracked. Then I checked wiring from TPM ECU and it was a bit burned.. Dont why how that happened. After buying another cable and soldering it with the KCAN3 wire, everything worked again.. Now only having issues with the front camera. After soldering them, they worked but only when not moved.. Bought now a new cable and will solder it with the old one so it hopefully works again.. I am here to help anybody if he is having these issues. |
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24-11-2018, 08:41 AM,
Post: #4
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RE: [SOLVED] BMW F12 MISSING ECU branches (KCan1 + K-Can3) and MOST ring break
You are wrong. HU-H is master on MOST circuit
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