Tried to replace ABS sensor, failed.
#1
Tried to replace ABS sensor, failed.
Afternoon,
This morning I tried to replace the N/S front ABS sensor, but the old one fell apart as I did. It broke by the wiring connector and by the nut hole, leaving just the magnetic bit stuck in the hole.
It looks like it's melted in there or something but I'm not sure how. Drilling it out didn't work, now I just have a mess of plastic.
I assume I'll now have to get a replacement part that the ABS sensor is screwed in to - does anybody know what that's called so I can order one from a breakers ( and get a pro to fit it )
This morning I tried to replace the N/S front ABS sensor, but the old one fell apart as I did. It broke by the wiring connector and by the nut hole, leaving just the magnetic bit stuck in the hole.
It looks like it's melted in there or something but I'm not sure how. Drilling it out didn't work, now I just have a mess of plastic.
I assume I'll now have to get a replacement part that the ABS sensor is screwed in to - does anybody know what that's called so I can order one from a breakers ( and get a pro to fit it )
#2
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mrobinson (05-31-2014)
#3
The Wheel Speed sensor fits into a hole in the suspension vertical link (circled in red) and is secured by a single hex bolt. The Sensor should be a sliding fit but years of road dirt etc can seize it in place.
Provided you have successfully removed the hex bolt and disconnected the electrical harness, you can be quite brutal in breaking out the old sensor.
Graham
Provided you have successfully removed the hex bolt and disconnected the electrical harness, you can be quite brutal in breaking out the old sensor.
Graham
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mrobinson (05-31-2014)
#4
#5
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mrobinson (06-01-2014)
#6
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mrobinson (06-01-2014)
#7
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mrobinson (06-01-2014)
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#8
I realised if I turned the wheel I'd be able to get better access, so after an hour of drilling and hammering in a screwdriver I got it out.
The new one is in now, but it's still giving me the 'traction control failure, stability control failure' errors, with the ABS light, immediately after starting the engine. Before I swapped the part, it was intermittent.
Could this mean the codes need clearing because it thinks somebody has nicked the sensor, or have I caused more problems? The new one is definitely plugged in properly. I don't have my own code reader yet so I can't just try resetting the codes.
The new one is in now, but it's still giving me the 'traction control failure, stability control failure' errors, with the ABS light, immediately after starting the engine. Before I swapped the part, it was intermittent.
Could this mean the codes need clearing because it thinks somebody has nicked the sensor, or have I caused more problems? The new one is definitely plugged in properly. I don't have my own code reader yet so I can't just try resetting the codes.
#9
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mrobinson (06-01-2014)
#10
The yellow ABS icon would stay lit until the car is driven, but the "traction control failure ... " message should not appear upon restart if a good sensor is now in place, and if there is not some other problem.
One thing to check: there were two vintages of sensors, with different impedances. Are you sure you got the correct one for your MY?
Good luck.
One thing to check: there were two vintages of sensors, with different impedances. Are you sure you got the correct one for your MY?
Good luck.
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mrobinson (06-01-2014)
#11
#12
There is a procedure showing which pins on the big connector at the ABS module can be used to measure each sensor's impedance. I'm sort of on the fly this week , but maybe someone here can point you to that procedure.
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mrobinson (06-02-2014)
#13
This sheet from jagrepair.com has the pins. A lot of other info there, also.
http://jagrepair.com/images/AutoRepa...heet%20XK8.pdf
http://jagrepair.com/images/AutoRepa...heet%20XK8.pdf
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mrobinson (06-02-2014)
#14
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mrobinson (06-02-2014)
#16
But my bet is that the solder joint for the pump pins has failed.
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mrobinson (06-02-2014)
#19
#20
It's been mostly fine since I posted this, but I've found that the error does re-occur when I reverse around a corner.
This has happened enough times now for me to think that it's not a coincidence. Any suggestions why that might cause the fault? Turning the engine off+on fixes it.
This has happened enough times now for me to think that it's not a coincidence. Any suggestions why that might cause the fault? Turning the engine off+on fixes it.
Edit: forgot ... could also be a broken wire in a front sensor wiring section, but let's try the easier fixes first.
Once a fault has happened, even if only for a moment, the fault message will stay there until the car is re-started.
Last edited by Dennis07; 06-10-2014 at 08:44 AM.
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mrobinson (06-10-2014)