Bike failed me again

[autogs]

Only windbag here is you, mr correct always, nobody can try you always shout down people, and for info software can be bad still run and give minor problems, all depend on what did not get copy correctly, sp please keep insult to your small self.

whatever,correct diagnosis plan will always win out instead of darting around here and there,i would assume fuel would have been one of the first things to be checked,and can be very easily without special tools.may i ask how often you have personally downloaded software onto a vehicle?
it either downloads or fails

 

[Winjar]

whatever,correct diagnosis plan will always win out instead of darting around here and there,i would assume fuel would have been one of the first things to be checked,and can be very easily without special tools.may i ask how often you have personally downloaded software onto a vehicle?
it either downloads or fails

To give you simple answer. once BMW give me new software on my bike, bike run ok for maybe 3 hour then start to run very strange, like on 1 cylinder I go back to BMW they say software had not surely installed correctly, they install software again, bike run perfect as before, so this is why I ask OP question and not you Mr know all.

 

[ShakeyGS]

Continuity on all 6 wires? Y/N

Yes. Centre pin to ground

 

[ShakeyGS]

Hi shakey, you may have already checked, is there 12v at the stick coil plugs ignition on, ,
if there is you can check switching with the wire legs of a 501 capless bulb unfolded and placed in the coil multiplug, if you don't have a noid light,
the zfe may need a battery off re set for a short circuit, there are 2 fuses under the seat which you may have checked,

Battery was disconnected yesterday whilst I had the computer out

 

[ShakeyGS]

Have you checked fuel pump is not seized.

It runs fine from the 911 service functions.

 

[ShakeyGS]

It's 5 years old and has been serviced by me for the last three so there are certainly no recent software updates.

 

[roamer]

Do you have battery voltage at the coils ignition on , they will be a common supply,

 

[Winjar]

It runs fine from the 911 service functions.

Only last thing I can think maybe, I get lucky and find this to explain post number 4

https://advrider.com/f/threads/1200-gs-lc-starting-stall-issues.1356436/

 

[ShakeyGS]

Only last thing I can think maybe, I get lucky and find this to explain post number 4

https://advrider.com/f/threads/1200-gs-lc-starting-stall-issues.1356436/

Yes, the sensor (item 3) was the apparent cause of the last breakdown and it was replaced. I had a look in there and did a camshaft alignment and made sure that the ring (item 1) was properly aligned before and after.

 

[Winjar]

Yes, the sensor (item 3) was the apparent cause of the last breakdown and it was replaced. I had a look in there and did a camshaft alignment and made sure that the ring (item 1) was properly aligned before and after.

Yes wondering if for some strange reason sensor has problem again.

 

[leadfarmer]

Yes wondering if for some strange reason sensor has problem again.

That was what I suggested post #37 but I think Shakey already double checked it

 

[Winjar]

That was what I thought post #37 but I think Shakey already double checked it

Ok well I am lost now nothing I can think of, agree OP say he has check fuel but with gs-911 does not mean fuel is getting correctly to start over bike.

 

[Santa-2512]

THe other sensor to check is the Crank sensor

You need both for the ecu to work out where you in the 3D map

sounds complex, but its not

so disconeect the crank sensor, and check it works, and then continuity test crank to Zfe pins

 

[ShakeyGS]

The crank sensor is my prime suspect at the moment. How do I check that it works?

 

[roamer]

Crank the engine over and check for the rpm signal on, your gs 911, you verified it in post 39,
if the timing was out it would register cam/ crank correlation, the injectors won't operate without the coils switching,
with the coils to ground fault you are pretty much at checking power and switching of the coils ,
and confirming the 4 supply and switching wires ecu pins 26-27-31-32 are not short to earth reading m ohms disconnected at both ends, continuity would read ok,
You should have earth at one of the three pins on the coil multi plug and 12 v at another the third pin should switch when cranking,
ideally back probe the pins to avoid damaging the pin grip, no 12v at the coil could register short to ground,
out of interest does the right side switch gear function ok, heated grips ok and kill switch worth on off a few times, they run on the Lin bus and may affect start interlock ,
as the coil supply is from the ecu, it may be in shut off ignition state via the interlock,

 

[Winjar]

The crank sensor is my prime suspect at the moment. How do I check that it works?

As 75 and can you check wires are not loose on crank sensor cable.

 

[ShakeyGS]

@Roamer, I could only verify the CAMshaft RPM via the 911, there doesn’t seem to be a reading for the CRANKshaft

 

[ShakeyGS]

OK I'm going to make a leap of faith and assume that (given Roamer's information above) the Crankshaft sensor is used to measure engine RPM as well as control ignition; in which case it is alive and well.

I have checked for 12V on the coil leads with ignition on as suggested and that all checks out OK too.

The odd thing is that whilst the camshaft sensor shows a value when the engine is spinning; once the engine is stopped, it still shows a value as per the snip below. This doesn't seem correct to me...


The right side switchgear checks out just fine although I will just check the LIN bus cable to it is secure as I had some weird faults when the left one came loose when it was a fairly new bike.

 

[DrFarkoff]

You are right with Engine off, that should read zero

 

[Winjar]

OK I'm going to make a leap of faith and assume that (given Roamer's information above) the Crankshaft sensor is used to measure engine RPM as well as control ignition; in which case it is alive and well.

I have checked for 12V on the coil leads with ignition on as suggested and that all checks out OK too.

The odd thing is that whilst the camshaft sensor shows a value when the engine is spinning; once the engine is stopped, it still shows a value as per the snip below. This doesn't seem correct to me...


The right side switchgear checks out just fine although I will just check the LIN bus cable to it is secure as I had some weird faults when the left one came loose when it was a fairly new bike.

Maybe some help here I am not 100% sure but I think Hella make the sensor

https://www.hella.com/techworld/uk/Technical/Sensors-&-actuators/Camshaft-position-sensor-3899/