OK so I has this ABS fault come up at the start of the year... Code 2 - Faulty rear modulator crank angle sensor system.
Looked through this and a few other forums, found details on the replacement ?125ish part plus fitting...blah, blah, blah...
It's a lot of money for a little sensor (or in fact what turns out to be a ?2 part in a bespoke housing..)...
And Ebay is not much help, there are a lot of front crank angle sensors on there for not too much money ( of corse there are, these almost never go wrong), but no rears..!
So after a bit of fiddling about and a few months of searching for a cheap answer I found the solution..
Anyway, the point of all this was to try and help anyone else who comes up against this problem... (apologies if anyone has covered this before and I just missed it).
So as we may or may not all know, the problem with the rear ABS modulator is that it sits right next to the rear shock and consequently gets covered in water, dirt and grime thanks to the lack of inner fender at this point.
Over time the aluminium housing of the ABS Modulator starts to oxide and slowly but surly the corrosion worsens to the point where it pushes the crank angle sensor off it's seat.
This has a couple or consequences:
1. This breaks the sensor housing
2. This or a combination of this and consequence 1 allows water to get inside..
The net result is that the sensor fails to function...ABS stops working and the rest of the fancy breaking system is nothing more than ballast slowing you down...
Well help is at hand my friends!!!
You see the front crank angle sensor is actually identical to the rear... the only difference is the length of cable from sensor to plug...
So......
This a little bit of time, effort and luck you can have that ABS system sitting there ready and waiting but with nothing to do for years to come....
Now I have not included pictures on getting the old sensor out but it is not too hard... You do not have to take the ABS module out, just move it enough to get a torx drive onto the sensor bolts...
Three bolts, a loosened banjo and a bit of fiddling will see you good...
So, once you have the pesky critter out, in pictures, the mod....
The front modulator crank angle sensor
The rear modulator crank angle sensor
Notice the difference, the rear has a white plug (although identical) and longer lead.
The fault (or at least one of them)
AND NOW..... The Solution....
Cut of the plug from your replacement front sensor as close to the plug as you can and discard the plug...
And on the old rear sensor, cut about half way along and discard the sensor...
It is now a case of soldering and heat shrinking the new sensor and cable to old socket and cable..
Its so easy, blue wire to blue wire, black wire to black wire, yellow wire....you get the idea...
Once you are done, refit your lovely new sensor...
Now remember, before fitting the new sensor clear away any corrosion around the sensor mounting area.. Make sure the sensor fits flush (I also used a liberal amount of grease on the mounting face to try and slow down a repeat of the problem.
Finally, ride off into the sunset safe in the knowledge that if some A**hole tries to kill you and you have to throw out the anker... there is a pretty good chance you will still be on your trusty steed when she come to a stop...:biker:
Looked through this and a few other forums, found details on the replacement ?125ish part plus fitting...blah, blah, blah...
It's a lot of money for a little sensor (or in fact what turns out to be a ?2 part in a bespoke housing..)...
And Ebay is not much help, there are a lot of front crank angle sensors on there for not too much money ( of corse there are, these almost never go wrong), but no rears..!
So after a bit of fiddling about and a few months of searching for a cheap answer I found the solution..
Anyway, the point of all this was to try and help anyone else who comes up against this problem... (apologies if anyone has covered this before and I just missed it).
So as we may or may not all know, the problem with the rear ABS modulator is that it sits right next to the rear shock and consequently gets covered in water, dirt and grime thanks to the lack of inner fender at this point.
Over time the aluminium housing of the ABS Modulator starts to oxide and slowly but surly the corrosion worsens to the point where it pushes the crank angle sensor off it's seat.
This has a couple or consequences:
1. This breaks the sensor housing
2. This or a combination of this and consequence 1 allows water to get inside..
The net result is that the sensor fails to function...ABS stops working and the rest of the fancy breaking system is nothing more than ballast slowing you down...
Well help is at hand my friends!!!
You see the front crank angle sensor is actually identical to the rear... the only difference is the length of cable from sensor to plug...
So......
This a little bit of time, effort and luck you can have that ABS system sitting there ready and waiting but with nothing to do for years to come....
Now I have not included pictures on getting the old sensor out but it is not too hard... You do not have to take the ABS module out, just move it enough to get a torx drive onto the sensor bolts...
Three bolts, a loosened banjo and a bit of fiddling will see you good...
So, once you have the pesky critter out, in pictures, the mod....
The front modulator crank angle sensor
The rear modulator crank angle sensor
Notice the difference, the rear has a white plug (although identical) and longer lead.
The fault (or at least one of them)
AND NOW..... The Solution....
Cut of the plug from your replacement front sensor as close to the plug as you can and discard the plug...
And on the old rear sensor, cut about half way along and discard the sensor...
It is now a case of soldering and heat shrinking the new sensor and cable to old socket and cable..
Its so easy, blue wire to blue wire, black wire to black wire, yellow wire....you get the idea...
Once you are done, refit your lovely new sensor...
Now remember, before fitting the new sensor clear away any corrosion around the sensor mounting area.. Make sure the sensor fits flush (I also used a liberal amount of grease on the mounting face to try and slow down a repeat of the problem.
Finally, ride off into the sunset safe in the knowledge that if some A**hole tries to kill you and you have to throw out the anker... there is a pretty good chance you will still be on your trusty steed when she come to a stop...:biker:
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