CAN bus error during thunderstorm
hbokel
recently, the KOMBI display switched off for a few seconds several
times, when I was riding my 1200 GS during a thunderstorm . The
indicators for speed / rpm fell to zero, and the warning-LED flashed
yellow and red. After e few seconds, the display was operative again.
The engine was not affected at all - it run continuously.
The effect did not appear again during the last 6000 km, although the
weather was pretty rainy sometimes (but I did not ride during a
thunderstorm again).
Is the CAN bus electrically not shielded sufficiently? Or might the
moisture from heavy rain be the reason? The service garage could not
explain the observation - they only deleted the error memory.
Has anybbody else experienced a similar effect?
KOMBI
GS911 Version:804.1 Date:07/27/08
37647: CAN bus OFF
The fault is not present now.
37649: CAN-bus timeout : ABS_1
The fault is not present now.
37650: CAN-bus timeout : SPEED_MOTBK
The fault is not present now.
37651: CAN-bus timeout : BMSK_1
The fault is not present now.
37652: CAN-bus timeout : BMSK_2
The fault is not present now.
37653: CAN-bus timeout : ZFE_1
The fault is not present now.
37654: CAN-bus timeout : ZFE_2
The fault is not present now.
37661: CAN-bus timeout to RDC
The fault is not present now.
37662: CAN-bus timeout to ASC
The fault is not present now.
BMS-K
GS911 Version:804.1 Date:07/27/08
10301: CAN-bus Timeout: no communication with all other control units
The fault is not present now.
10218: CAN-bus Timeout: no communication with KOMBI (Instrument
Cluster) control unit
The fault is not present now.
10219: CAN-bus Timeout: no communication with ZFE (Central Vehicle
Electronics) control unit
The fault is not present now.
10220: CAN-bus Timeout: no communication with ABS control unit
The fault is not present now.
Integral ABS 2 - CAN
GS911 Version:804.1 Date:07/27/08
54100: CAN-bus: No Communication with Engine (BMSK) control unit
The fault is not present now.
54101: CAN-bus: No Communication with Engine (BMSK) control unit
The fault is not present now.
54104: CAN-bus: No Communication with Instrument Cluster (Kombi)
control unit
The fault is not present now.
54113: CAN-bus: No Communication with Vehicle Electronics (ZFE)
control unit
The fault is not present now.
ZFE
GS911 Version:804.1 Date:07/27/08
41754: CAN-bus timeout to BMS-K (engine) control module
The fault is not present now.
41755: CAN-bus timeout to ABS control module
The fault is not present now.
41756: CAN-bus timeout to Kombi (Instrument cluster) control module
The fault is not present now.
Ken Harbeck
I have nothing constutive to add but wow, that's quite a list of fault codes.
Certianly any electonic system can be subject to EMI if the source is strong enough. And a lightning storm might be. First I have heard of it on a bike though.
Unless it repeats, I'd just chaulk it off to an anomoly and ride, enjoy. --- On Sun, 9/7/08, hbokel <heinz...@gmx.de> wrote: |
|
|
Stephan Thiel
however here are some things to think about :
1. Don't worry about the amount of fault codes - there are a lot of
them, but they are all related to the CAN bus - and all communication
interruptions on the bus (each specific controller that cannot speak to
the others..
2. Thunderstorms do definitely build up enormous E-fields and I would
not rule out that it could for a short while interfere with the
communication on the bus
3. your symptoms correlate with what you saw on your KOMBI, as the rpm
that is displayed on the KOMBI is sent from the BMSK to the KOMBI over
the bus, and the vehicle speed in turn from the ABS controller - so that
a break in communication would result in no signal..
4. However, this is the first time I've heard of this happening.
I would erase the codes, and let us know if that should ever happen again...
best,
Stephan
Ken Harbeck wrote:
> I have nothing constutive to add but wow, that's quite a list of fault
> codes.
>
> Certianly any electonic system can be subject to EMI if the source is
> strong enough. And a lightning storm might be. First I have heard of
> it on a bike though.
>
> Unless it repeats, I'd just chaulk it off to an anomoly and ride, enjoy.
>
>
> ------------------------------------------------------------------------
>
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--
========================
Stephan Thiel
www.hexcode.co.za
+27 21 880 1433 (tel)
0 86 614 1109 (fax)
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hbokel
thanks for the comment. I did not observe such an event again for 6000
km now - but I did not ride during a thunderstorm again ;-)
I'm just wondering if the CAN communication breakdown could cause an
ABS-malfunction. Does the ABS work independently from the ZFE?
Integral ABS 2 - CAN
Heinz
On 8 Sep., 04:44, Stephan Thiel <step...@hex.co.za> wrote:
> 1. Don't worry about the amount of fault codes - there are a lot of
> them, but they are all related to the CAN bus - and all communication
> interruptions on the bus (each specific controller that cannot speak to
> the others..
Ken Harbeck
My understanding is that yes, as a braking system the ABS module will “stand alone.” It might not communicate things to the ZFE such as vehicle speed (gotten from the ABS sensors) or to light brake lights, but it would still stop the bike normally.
I believe this is a requirement to get vehicle certification of the manufactures implementation of CAN-bus system in most all countries. The braking system cannot be hampered by a bus failure. |
|
From: hbokel <heinz...@gmx.de> |
Ask a question on any topic and get answers from real people. Go to Yahoo! Answers.
Stephan Thiel
should still work (as should your engine) if there is a communication
break on the bus.
the Kombi is not a critical unit - hence it gets its values over the bus
from some of the other controllers.
best,
Stephan
Ken Harbeck wrote:
>
> “stand alone.” It might not communicate things to the ZFE such as
> vehicle speed (gotten from the ABS sensors) or to light brake lights,
> but it would still stop the bike normally.
>
>
>
> I believe this is a requirement to get vehicle certification of the
> manufactures implementation of CAN-bus system in most all countries.
> The braking system cannot be hampered by a bus failure.
>
> Ken H.
>
>
> From: hbokel <heinz...@gmx.de>
> Subject: Re: CAN bus error during thunderstorm
> To: "GS-911 Field Diagnostic Tool for BMW motorcycles"
> <GS-...@googlegroups.com>
> Received: Sunday, September 7, 2008, 9:48 PM
>
> Stephan,
>
> thanks for the comment. I did not observe such an event again for 6000
> km now - but I did not ride during a thunderstorm again ;-)
>
> I'm just wondering if the CAN communication breakdown could cause an
> ABS-malfunction. Does the ABS work independently from the ZFE?
>
> Integral ABS 2 - CAN
> 54113: CAN-bus: No Communication with Vehicle Electronics (ZFE)
>
> regards
> Heinz
>
> On 8 Sep., 04:44, Stephan Thiel <step...@hex.co.za> wrote:
>
> > 1. Don't worry about the amount of fault codes - there are a lot of
> > them, but they are all related to the CAN bus - and all communication
> > interruptions on the bus (each specific controller that cannot speak to
> > the others..
> ...
> > I would erase the codes, and let us know if that should ever happen
> again...
>
>
>
>
>
>
> Ask a question on any topic and get answers from real people. *Go to
> Yahoo! Answers.* <http://ca.answers.yahoo.com>