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abs sensor testing anyone know how?
Posted 20 August 2011 - 03:23 PM
Posted 20 August 2011 - 03:55 PM
Posted 20 August 2011 - 09:44 PM
Thought about that, however I have another factor of the abs ring itself. There seems to be a slight run out of true when you spin the hub. So it almost has the effect of moving closer and then further away from the sensorn is there a specific gap to he maintained? The sensors have shims in between them and the hub to adjusts to suit....
Posted 21 August 2011 - 06:53 AM
If you do not have access to a scope or someone locally with one then Andys advice is sound as it eliminates a possible cause. The changing gap you mention is also a worry - check for worn wheel bearings. There is a specific gap to maintain, but I dont have the manual on this PC to look it up.
Posted 21 August 2011 - 06:56 PM
Posted 21 August 2011 - 09:10 PM
Posted 23 August 2011 - 12:18 AM
Edited by fflyingdog, 23 August 2011 - 12:26 AM.
Posted 23 August 2011 - 08:35 AM
Posted 23 August 2011 - 06:11 PM
A while ago I had the ABS fault light up. I used Espritmon and it reported the OSF sensor too. Got a new one fitted it and fault gone away. Best to replace the sensor as for the age of it I would not trust it anymore if it failed. Afterall it for the braking system and ABS is useful when activated in case of hard stopping.
Posted 24 August 2011 - 10:10 AM
The gap between the sensor tip and pole wheel (ABS ring) should be between 0.6 - 1.4 mm (0.024 - 0.055 in).
This gap is pretty critical. If you don't have access to an oscilloscope to measure the waveform, you can always use a multimeter with a min / max function.
I had a similar issue on my GT3. After replacing a suspected sensor, I picked up that the signal was infact inconsistent.
After a thorough cleaning of the pole wheel teeth with a wire brush / screwdriver to remove any corrosion between the teeth it all worked fine - even with the 'old' sensor - typical!
Hope this helps!
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