Which wheel speed sensor?

[AntonLargiader]

I'm seeing a fault 480685, rotation sensor fault. But there's no indication of which one it is and the fault is intermittent so both sensors are reading properly when I test.

The three CAN errors are from 400km ago, and the first error is from 200km ago.

Every report I read indicates that the sensor is identified as front or back, but this one isn't.

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Fault Codes Report

GS-911 version: 1904.1 Datapack version:13.3 Serial Number: GS0 000 138 Registered to: Anton C Largiader
Date: 5/28/2019 Time: 10:27:09 AM

Motorcycle VIN: Invalid

480685: Angular (rotation rate) sensor error
   This problem occurred once.
   The fault is not present now.
D35468: No CAN message for Sensorbox_ID7 from Angular (rotation rate) sensor / SEB (timeout)
   This fault occurred 2 times.
   The fault is not present now.
D3542C: No CAN message for Sensorbox_ID1 from Angular (rotation rate) sensor / SEB (timeout)
   This fault occurred 2 times.
   The fault is not present now.
D3542E: No CAN message for Sensorbox_ID4 from Angular (rotation rate) sensor / SEB (timeout)
   This fault occurred 2 times.
   The fault is not present now.

[schuppi]

Hello
This is not a wheel speed sensor.

This refers to the sensor box for yaw rate.
This is a component for the curves ABS ( Curves ABS Slope Braking )

I apologize for the bad translation

[AntonLargiader]

Thanks. Is this the part BMW calls the "Speed Sensor" for ABS Pro and Riding Modes Pro? Currently listed as parts 61 35 8 546 524 or 61 35 8 388 688?

[Jughead]

Wheel sensors are not the only rotation sensors on the bike.

OK, while having made that statement, it would be of great value to tell us what bike you have this issue with, or at least post the entire Autoscan.  From your post we do not even have a VIN number to work from.

Bikes like the K51 LC have wheel rotation sensors, butterfly rotation sensors, cam rotation sensors etc, etc. 

Tell us what we are looking at

[schuppi]

Hello

ABS PRO.
For braking force at a banking angle.

https://www.bmw-motorrad.co.uk/en/experience/engineering/safety/abs-pro.html
https://www.bmw-motorrad.co.uk/en/experience/engineering/safety/race-abs.html#/section-even-more-technology-in-detail
https://www.bmw-motorrad.co.uk/en/experience/engineering/safety/dtc.html#/section-even-more-technology-in-detail
 Traction control DTC.
DTC makes a significant contribution to a high level of driving dynamics and outstanding road safety. Particularly under changing riding conditions, on surfaces with low levels of adhesion and in case of sudden leaps in friction coefficients, Dynamic Traction Control provides invaluable assistance.
BMS-X detects a spinning rear wheel by comparing the speeds of the front and rear wheel via the ABS sensors and data measured by the angular rate sensor (inclination sensor). The engine control triggers a corresponding reduction in the drive torque in such cases by reducing the ignition position, intervening in fuel injection and influencing the position of the throttle valve.
Unlike with previous BMW Motorrad ASC systems, the inclined position is also determined via intricate clusters of sensors and taken into account in the control behaviour with DTC traction control. DTC is individually combined with each of the different driving modes, thereby ensuring maximum driving safety at all times.

[AntonLargiader]

Thanks. I think a good US-English translation would be inclination sensor, as the UK BMW folks said. BMW's original terminology isn't always clear and some of their translations over the years have been hilarious, so they aren't necessarily a good reference on this.

FWIW this was on a K51.