GS-911 and ezCAN User Forum
General Category => Technical => GS-911 => Central Vehicle Electronics/ZFE/GM issues => Topic started by: rcb78 on December 19, 2019, 12:36:30 AM
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I just noticed today that my battery voltage is reading higher than the charging voltage, see pic below. I replaced my battery and regulator over the summer and when I did, I wired the regulator output directly to the battery instead of re-using the original connection. Is it possible that the charging voltage is now reading low because it's after the battery, headlights, etc,, where before it would have been before these in the circuit? Thanks in advance.
https://drive.google.com/file/d/1_x9ZY2GL-dkYmXlTsFYRocXkpWOn_I5t/view?usp=sharing (https://drive.google.com/file/d/1_x9ZY2GL-dkYmXlTsFYRocXkpWOn_I5t/view?usp=sharing)
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I guess anything is possible. Why not put the wiring back to the way it was designed and see what happens?
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I did and no change. Then I went back through a few logs I made before I replaced the battery and R/R and it shows exactly the same thing. Additionally, someone on the ADV Rider forum posted on image of one of their data logs and show's the exact same thing I'm seeing. So now I'm wondering exactly where the GS-911 is getting data for the charging system and if it's accurate. I'm going to pull the ZFE sometime over the Holidays and double check all the connections and grounds to rule out bad contacts.
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Have you checked it with a meter? I have never used the gs911 to check charging, I just put my meter on it, battery can sit static at up to 12.3v, with charge 13.5 - 14v. Easy way to check. Good luck.
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I have, voltage at the battery read with a meter matches GS-911 values. Voltage at the accessory port (DIN plug) matches the lower value reported as the charging voltage. Since that port is controlled by the ZFE, that leads me to believe there is more to investigate.
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What if you just leave the meter on the battery, check it static, then with the motor running? The green graph is showing a normal charging voltage, I have no idea where the higher voltage could be coming from. If the meter shows normal then unless you have a problem I would forget it.
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The precise model of the bike needs to be specified to know which of 2 different methods the diagnostics system is using to report voltages
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What if you just leave the meter on the battery, check it static, then with the motor running? The green graph is showing a normal charging voltage, I have no idea where the higher voltage could be coming from. If the meter shows normal then unless you have a problem I would forget it.
Multimeter at the battery, voltage static is 13.7, bike turned off after sitting overnight. With the engine running it mirrors the yellow line (14.3-14.4), but that's expected since the R/R runs directly to the battery. Reading taken at the accessory port is about .1 lower than GS-911 reports the charging voltage, so 13.8-14.0.
The precise model of the bike needs to be specified to know which of 2 different methods the diagnostics system is using to report voltages
Well there are only two choices for F800GS in the program, "F800GS K72 (2007+)" and F800GS Adventure K75(2013+). I've tried both and they both give the exact same numbers.
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So based on the meter readings all is well.
Perhaps there are bad connections in the gs911 plug or wiring?
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Well there are only two choices for F800GS in the program, "F800GS K72 (2007+)" and F800GS Adventure K75(2013+). I've tried both and they both give the exact same numbers.
You did not answer the question directly re model, only what you were selecting in the GS911 menu & both are K-Line BMS-K models
The bike model & year, the type of GS911 & the software version being used are all important pieces of information needed to provide answers as there are 2 different diagnostics protocols on different pins used plus different Engine ECU's (BMS-K, BMS-X, BMS-M) in different year models
The later BMS-X, BMS-M models are CAN Diags & the ECU's are interogated to provide the voltage information as the diagnostics socket only has V-Batt whereas the earlier BMS-K models are K-Line protocol & have both V-Batt & V-Ignition wired to the diagnostics socket so the voltages can be read directly
It sounds like you are using a Yellow GS911 & older PC App software as GS911 WiFi has 6 models for F800 Series listed as does the latest PC App plus your bike is one of the older year models with BMS-K, can you confirm that ?
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Using a the newer GS-911 wifi (mfg date 6/27/18 - sticker on back) on the mobile app, all software is current and checked for updates each time I plug it in. Bike is a 2013 F800GS (not adventure).
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Using a the newer GS-911 wifi (mfg date 6/27/18 - sticker on back) on the mobile app, all software is current and checked for updates each time I plug it in. Bike is a 2013 F800GS (not adventure).
OK, understood so it is a BMS-K ECU model, the the WiFi firmware for Web Interface should be 0.254-0.175-0.152 & the PC App 1912.1
How up to date is the iLevel in the bike ?, autoscan will tell you, the latest I have seen for the K024's is K024-18-07-500
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Doesn't look like it's been touched since the bike was built Autoscan Report (https://drive.google.com/file/d/1UVKgC0j-0lkN7BODpq1eUOgXXQrRYMRM/view?usp=sharing)
Aside from maybe an incorrectly reported value, is there any reason I should spend the money to have my dealer update this? Benefits?
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The voltages aspect is likely that the voltages are derived by interrogating the ECU's rather than directly reading from the socket, others may be able to confirm that & I would not be concerned by it
Re firmware in ECU's, BMW are not always forthcoming to Dealers on what firmware updates are actually doing but they can be improvements & bug fixes to program code or market specific data, coding & diagnostics capability etc, see the OSV, FSV, MCV, values in the autoscan
History has shown an update can transform a bike with better starting hot or cold & improve engine response at different rpm's etc. Too often Dealers were told dont update unless the owner complains re a specific problem so in general terms updating is worthwhile, it looks like on BMS-KP there are a couple of updates for your K72 model, I cant comment on the other ECU's
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Thanks for the info.
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Looking at the Autoscan why is the actual I level not set?
If it had not been touched from new the I level would read the factory setting.
I recently had my 2017 F700GS updated at my local dealer and the I level is K024-18-07-500, it only cost £25 so not to expensive as this is the only time I pay the dealer (I do my own servicing).
Just curious!!
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My guess based on the searching I've done, the actual level is blank until an update is performed.
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Looking at the Autoscan why is the actual I level not set?
If it had not been touched from new the I level would read the factory setting.
I recently had my 2017 F700GS updated at my local dealer and the I level is K024-18-07-500, it only cost £25 so not to expensive as this is the only time I pay the dealer (I do my own servicing).
Just curious!!
The diagnostics system can either leave Actual blank where no updates have been done after leaving the factory or repeat the factory iLevel in the actual iLevel field, it is really just a question of presentation on screen, leaving Actual blank certainly makes it obvious no updates have been done
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The diagnostics system can either leave Actual blank where no updates have been done after leaving the factory or repeat the factory iLevel in the actual iLevel field, it is really just a question of presentation on screen, leaving Actual blank certainly makes it obvious no updates have been done
My Wife's 2015 F700GS has the actual I level not set also even though the dealer was supposed to have done an update (for free), I suspected at the time that they didn't do it and I guess this proves it. Well looks like you get what you pay for.
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The diagnostics system can either leave Actual blank where no updates have been done after leaving the factory or repeat the factory iLevel in the actual iLevel field, it is really just a question of presentation on screen, leaving Actual blank certainly makes it obvious no updates have been done
My Wife's 2015 F700GS has the actual I level not set also even though the dealer was supposed to have done an update (for free), I suspected at the time that they didn't do it and I guess this proves it. Well looks like you get what you pay for.
The "Program Status" and "Date Release" info for the BMS in the Autoscan along with the "Part No" can assist in determining if an update has been done
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Hear is scan info before alleged update:
Mileage: 21622.0 km
Cluster date: 20 January 2017
Next service date: 08 May 2025
Next service distance: 76574 km
Factory I-Level: K024-15-03-500
Actual I-Level: Not set
BMS-KP2
BMS type: BMS-KP2
Part No.:8545091
Hardware Index:36
Coding Index:03
Manufacture Date (YY/MM/DD):2015-01-31
MCV: 0.6.5
FSV: 0.77.57
OSV: 2.3.1
Manufacturer: Bosch
HWOE No.: 68364278
Program status: 570I
Date release: 2E13
Factory I-Level: K024-15-03-500
Actual I-Level: Not set
VIN model year: 2015
And after:
Mileage: 36792.0 km
Cluster date: 07 November 2018
Next service date: 08 May 2025
Next service distance: 76574 km
Factory I-Level: K024-15-03-500
Actual I-Level: Not set
BMS-KP2
BMS type: BMS-KP2
Part No.: 8545091
Hardware Index: 36
Coding Index: 03
Manufacture Date (YY/MM/DD): 2015-01-31
MCV: 0.6.5
FSV: 0.77.57
OSV: 2.3.1
Manufacturer: Bosch GmbH
HWOE No.: 68364278
Program status: 570I
Date release: 2E13
Factory I-Level: K024-15-03-500
Actual I-Level: Not set
VIN model year: 2015
Although I don't know what those numbers you mentioned mean they look the same to me, so no update it seems.
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Jim, yes I would agree all looks the same before & after
The iLevel for K024 models went from 16-11-500 to 18-07-500 ie an update in 2018 July for at least one model in the series
From info I have seen, the BMS-KP Part No 8545091 (it is the programmed part No) remained stable so program version was stable but market data updates were possible as well as updates on other ECU's
If the Dealer hooked up & concluded no updates were available & did not complete the "Measures Plan" on their system then Actual iLevel would remain blank but if he ran a measures plan even without an ECU update then actual iLevel should have been written into the bike.
Part of the problem with the older K024 & K1X models is they are programmed with the older "legacy" Dealer software rather than the newer software with diagnostics & programming combined so the Dealer would need to check with the right software & it would surprise me if there were no updates for the ECU's on the F700 by late 2018
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Thanks Wayne, as usual a prompt and knowledgeable response.