General Category > ABS related issues
ABS not working on rear only.
Jughead:
Hi Marco
Apologies for the late reply.
Unfortunately the codes from the OBDLink unit is a little vague.
However, the fact that it brings up the rear wheel speed sensor appears to indicate that there is a problem there. Two things you can check.
Follow the cable from the sensor up along the rear torsion bar. At the front just above the swingarm pivot point, the cable will leave the torsion bar and follow the frame. Just at the transition between torsion bar and frame the cables sometimes get pinched and broken, resulting in the sensor failing. In the photo below, the cable (blue arrow) has been known to be pinched in the gap indicated by the red arrow.
If all is well there, then remove the sensor from the final drive and inspect the end of it. If the end is full of metal bits (it is after all a magnet) that would indicate a bearing failure in the FD and also at times cause the sensor to fail.
schuppi:
Hello
Fault code means:
618C 24972 Pressure in rear wheel circut is to high
Pressure measurement at ignition on in the rear wheel circuit over 30 bar. A defect of the sensor is probable and a replacement of the module is recommended :-\
Jughead:
:o >:(
Thanks Schuppi. Sorry Marco. Just looked at your post again and I was looking at the wrong code.
The "Pressure in rear wheel circuit too high" points to a faulty sensor inside your ABS pump.
The sensor is incorporated with the front wheel sensor and looks like this.
Inside
Outside
And it is located here, on the LHS of the pump as viewed from the rider's seat.
Love2Ride:
--- Quote from: Jughead on March 12, 2019, 01:24:38 PM ---Hi Marco
Apologies for the late reply.
Unfortunately the codes from the OBDLink unit is a little vague.
However, the fact that it brings up the rear wheel speed sensor appears to indicate that there is a problem there. Two things you can check.
Follow the cable from the sensor up along the rear torsion bar. At the front just above the swingarm pivot point, the cable will leave the torsion bar and follow the frame. Just at the transition between torsion bar and frame the cables sometimes get pinched and broken, resulting in the sensor failing. In the photo below, the cable (blue arrow) has been known to be pinched in the gap indicated by the red arrow.
If all is well there, then remove the sensor from the final drive and inspect the end of it. If the end is full of metal bits (it is after all a magnet) that would indicate a bearing failure in the FD and also at times cause the sensor to fail.
--- End quote ---
Hey Jughead, just checked cable and sensor, seems fine.
Love2Ride:
--- Quote from: Jughead on March 12, 2019, 01:48:08 PM --- :o >:(
Thanks Schuppi. Sorry Marco. Just looked at your post again and I was looking at the wrong code.
The "Pressure in rear wheel circuit too high" points to a faulty sensor inside your ABS pump.
The sensor is incorporated with the front wheel sensor and looks like this.
Inside
Outside
And it is located here, on the LHS of the pump as viewed from the rider's seat.
--- End quote ---
Thx Jughead/Schuppi. As mentioned my fault code reads "Wheel circuit, rear: 618C". Where can I get this sensor (on the ABS pump). And I suppose you have to remove the pump to replace the sensor? Jughead, could you please direct me to the video on the correct way to bleed the system. I have wached a few and they all were different. My name is Basie, by the way.
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