Fuel film strip problem

[schuppi]

- Autoscan finds no fault. ?
- Look at ZFE. It also finds no fault. ?

Hello
Did you really read and understand my postings?

Condition for fault identification
Terminal 15 on  > yes , otherwise you can't read anything out of the ZFE

Supply voltage for ZFE  between 9 V and 16 V >  yes , otherwise you can't read anything out of the ZFE

ZFE is correctly configured (film-type sensor as fuel level sensor) >  I hope so, because there is no complete auto-scan

The heating wires are activated by ZFE   >>  YES, if you activate the calibration test!
and >>  NO,  if you only try to read the codes after deleting the calibration fault.

The activation of the heating wires to get a plausible measurement are depending on the refuelling
and driving the bike.

So if you want to activate these wires for a test, start the calibration function with very dry level sensor outside the
tank. If that function failed with a stored fault like 41778 , ZFE will be off.

Hope this helps and I'm very impressed of the help that GS911  offers me  

[Ghiribizzo]

Schuppi - thank you for your help. Perhaps I have not understood some of your advice.
I have not had any problem with replacing strips in the past, but those strips were broken. When they were replaced and calibrated 'dry' they all worked after installation. Different motorcycles.

This machine - the strip in the bike is ok. I also have a new strip.
Which part am I not doing correctly?
* I am unsure what you mean by Terminal 15 on?

* In the past I would delete errors and then calibrate the strips 'dry' with a completely dry tank. No fuel at all.
This one - once errors have been deleted, if I try to calibrate a strip - after around 5 minutes I get this:

Then, if I check for errors I see this:

So - I apologise if I have not done some procedure.
What is your suggestion?
Again - i am unsure what you mean by 'Terminal 15 on'.


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[schuppi]

 Hello

'Terminal 15 on'. means ignition on, so power supply to ZFE is given. You have done it
Otherwise there is no communication with ZFE.

But your pictures indicates that there is definitely no output from ZFE to heating wires.
Either you change this module or you open it, to look for some anomaly on the circuit board

Hope this helps

[Ghiribizzo]

Thanks Schuppi. [emoji1303]





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[Ghiribizzo]

*if the ZFE was changed for one which works, would the bike have to be taken to BMW Motorrad to be keyed to the ignition switch and instruments or can it be substituted without any problem?


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[schuppi]

Hi,
don't know yet. Just will have a look for changing this module.
But so far, if the good working and used module is coded correctly
with all features of your bike, I think it will work.

Just plug and play

Note
Do not, under any circumstances temporarily install control units from other vehicles by way of testing.
The possible consequences include:
Coding data could be overwritten.
The control units could malfunction.

[Ghiribizzo]

@schuppi  - the third ZFE I had been assured was correct...seemed to be of the correct type.
Fuel gauge? Ok.
ESA? Ok.
All ok - no faults showing after various starts.
Put fuel in. All ok.

Except the air temperature does not show in the display. [emoji20]


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[WayneC]

Still with the fuel strip issue - how useful is a GS911?
So we have a bike - nothing in the fuel display. Fuel strip is in good order. Wiring is all good.

- Autoscan finds no fault.
- Look at ZFE. It also finds no fault.

So the ECU's not the GS911 indicate no faults which should mean all wiring and the gauge element are OK

- what is the purpose of output tests to do with the fuel strip heating element?

What does the heating element do in this list. If all is good and it is selected what happens? If all is not good - nothing happens.

BMW refer to the fuel gauge resistive element as a heating element, it is BMW's terminology and yes it is odd calling a resistor a heating element

I'm somewhat annoyed that the software tool does not seem to diagnose faults and has lots of apparently useless features.

What you are referring to as "useless features" are the output and diagnostics routines/tests inbuilt into the ECU's which GS911 accesses and they are very useful when looking for faults, when looking for wiring and faults in components connected to ECU's they save considerable time in repair

The only part of the software that identifies a fault is when a calibration of the fuel strip is attempted.

It is the ECU reporting to the GS911 that an error has occurred in calibration, if you think the GS911 is incorrectly reporting an error lodge a support ticket