Hi Mark,
Bit late to the party, but lets go;
First off, what scanning/ diagnostic unit did you use to obtain the fault code?
from what i can understand, you have a red triangle, and an error message
Warning triangles come in 2 stages -
Amber triangle - stage 1 fault, warning a module has reported an error, and /or functions are impaired
Red triangle - stage 2 fault , warning a module has failed, or reported an error that cannot be resolved without further detailed diagnostics or repair / replacement
Now this is where it get's a bit in depth,
Knutk was partially right with his descrptiion of canbus, but i'll fill in the gaps
If you think of the canbus ( Connected Area Network -BUS. CANbus) as a fully linked network. you'll get the idea of how it works
So if you look at a rifle scope, youll be able to work it out
you have the centre dot (the ZFE - Brain of the bike) radiating out at 12,3,6,9 o'clock you have wires running to the other modules in the bus
12 = Kombi (instrument panel) 3 = DWE 6 = ABS , 9 = ESA (these are just examples i cant remember all the modules of the top of my head)
And then each of the modules are linked to each other on an outer ring
So all modules talk to each other and the brain
Now this is where it gets clever , and confusing
All of the modules have there own specific code in them, which they act on, and send the results around the bus.
All of the other modules read that incoming code and either
Ignore it - it gets passed on round the bus
Act on it -
they store the data and do nothing
Act on it - They carry out the action requested by the other module
And yes you guessed it they send more data round the bus telling the other modules what they've done
Yes its complex, but clever
say your kombi dies, and you pick up a SH one from a newer low mileage model, you'd think it would show the lower mileage, so resale will be better -
Unfortunately no, the mileage is stored not only in the kombi, but in some of the other modules as well , and when the new data is sent round, it dosent match what is stored , and a fault is triggered
Thts one way it works, the other is, if one of the modules is faulty and cannot tell you what the fault is,if will have all ready sent all its fault data to the next module who will store it, and display it
when asked
So looking at your message
e1143a Instrument Panel: No CAN message status basic module (from GM).
"
If i read it correctly , its saying Instrument panel: no CAN message status basic module (from GM)
If we break that down again
It saying " I'm the instrument panel , and i'm relaying this message - No CAN message status basic module (from GM)
So - No CAN message (No Connected Area Message ) basic status from the GM module -( so no basic messages from the GM module )
Looking at the wiring circuit for your bike, all the indicators LH Switch, & instruments (kombi) feed into the Ground module ( GM) and the ground module talks to the kombi via the CANbus
From the Canbus, it talks to the rest of the bike via the linbus
So it could be a loose or dirty connection,
Looking at the wiring diagram, for the turn signal side of things, there are two fuses, you could check them first
Then you could unplug the LH switch cluster, and see if the fault goes, but i'm not sure if that would generate a stored fault ( i dont have my gs911 handy to test )
Hope this helps,
Please dont treat it as gospel, but it should give you an idea of how the system works
