General Category > ABS related issues

ABS disabled > will not reset

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Jughead:

--- Quote from: cschwel on April 09, 2019, 03:55:05 PM ---yesterday I rode again, Now no speedometer/odometer. going to hook up again & test rear wheel sensor thank you

--- End quote ---

That rear sensor is faulty.  It also provides the signal for the speedo/odo, thus no reading.

cschwel:
Fault code was back" rear sensor inplausible".  Now does any body have a source for a new one? $168 USD from the dealer  ouch

GS Jim:
Try using "live values" to see what the speed sensor is doing, just spin the rear wheel by hand and observe the reading, do the same for the front to give you an idea of what to expect. If you havn't already, remove the sensor from the housing and check it for obvious issues.
 I believe the switch Jughead is talking about is the one located on the left handlebar, labeled ABS, you use this for toggling the ABS and/or Traction Control on/off.

cschwel:
 I have no switch on either side for ABS> only ASC on the left side. 2012 R1200R Vin #WB1049001C2X96912

Jughead:

--- Quote from: cschwel on April 10, 2019, 01:19:55 AM --- I have no switch on either side for ABS> only ASC on the left side. 2012 R1200R Vin #WB1049001C2X96912

--- End quote ---

That is why I asked for the VIN earlier.  Some models come with the ABS switch, some without.  Yours is one of the models without.  Your left switch cluster would be the one in the diagram below.

I am assuming that the message relating to the ABS switch in the diagnostics is because the ABS controller self-diagnostics cannot be completed and it is assuming that it cannot be completed because the switch has been activated. And you know what they say about assumption.  I would just ignore that message.  It will go away when the rear sensor issue has been resolved.

Two other things you can check before replacing the sensor. 

1.  Follow the cabling you inspected earlier to where the plug is that plugs the sensor into the harness.  Not exactly sure of your model, but it should be somewhere under the seat close to the rear upper shock mount and your preload adjuster.
 Unplug it and make sure there is no corrosion on the contacts.

2.  Remove the sensor from the Final Drive.  You will need to remove the rear wheel to do so.  There are 2 small torx screws, one holding the cable retainer and the other holding the sensor in place.  You will have to remove both.  Pull the sensor out of the FD, taking care not to loose the 0-ring or any shims that are installed.  Inspect the end of the sensor.  If it has a lot of what looks like iron filings on the end of the "magnetic tip", clean it all off and reinstall the sensor.  Also inspect the cable where it is held in place by the retainer for damage.

Having said all that, if you do have what looks like a Christmas tree of iron filings on the end of the sensor, you have another rather serious and expensive issue.  Any bits of metal adhering to the end of the sensor would indicate that one of the internal bearings in the FD is busy failing, and I would have that attended to ASAP.

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