We have several trucks with FMB640 installed. Some of them recently(1-4 days ago) stopped sending FMS data (fuel level, RPM etc.). Other devices work properly. All devices have same configuration and are installed identically. All vehicles are of same model and year.
scanfms command returns "0,0,0,0,0,0,0.....". Could this be device installation problem (considering FMS data was working recently)?
Interesting part:
Odometer source is set to LVCAN and is successfully returning data. How is FMS data not working but LVCAN returns odometer value?
Might be useful:
Recently we had some minor configuration changes which were sent to ALL devices(to those who failed, and to those who didn't). We fail to understand how these changes could affect FMS data (it was only some IO parameters changed from priority `none` to `low`).
Thanks for your time.
P.S. Tell me if there is any more info that we could provide to help.