General Category > Central Vehicle Electronics/ZFE/GM issues
Battery voltage reads higher than Charging voltage
Alexm1:
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.
WayneC:
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
rcb78:
--- Quote from: Alexm1 on December 21, 2019, 12:29:21 AM ---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.
--- End quote ---
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.
--- Quote from: WayneC on December 21, 2019, 02:12:36 AM ---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
--- End quote ---
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.
Alexm1:
So based on the meter readings all is well.
Perhaps there are bad connections in the gs911 plug or wiring?
WayneC:
--- Quote from: rcb78 on December 21, 2019, 06:30:50 AM ---
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.
--- End quote ---
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 ?
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version