Home > Technical (L322) > Replaced ABS sensor, now that wheel 2x speed |
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barbary Member Since: 29 Dec 2021 Location: Isle of Bute Posts: 14 |
Sorry, just realised should have posted this in the Technical section |
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29th Dec 2021 10:48pm |
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dhallworth Member Since: 10 Oct 2011 Location: Glasgow Posts: 3084 |
What make of ABS sensor did you buy? Might be worth cleaning the contacts in the plug on the car just in case but it sounds like it’s faulty as that’s the only thing that reports the wheel speed to the ECU.
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30th Dec 2021 1:14am |
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barbary Member Since: 29 Dec 2021 Location: Isle of Bute Posts: 14 |
Thanks. Sensors are original and rusted in. I had to drill the broken one out, so not easy to swap them around.
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30th Dec 2021 7:55am |
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dhallworth Member Since: 10 Oct 2011 Location: Glasgow Posts: 3084 |
If it’s the sensor giving random readings then you should be able to just unplug the NS one and plug this one in and observe it with diagnostics.
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30th Dec 2021 10:02am |
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mjdronfield Member Since: 04 Nov 2011 Location: Derbyshire Posts: 7799 |
I read a similar thing on here a few years ago if I remember right. Fitting a genuine LR sensor fixed the issue I think.
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30th Dec 2021 11:32am |
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barbary Member Since: 29 Dec 2021 Location: Isle of Bute Posts: 14 |
Took the replacement sensor off the car today. Resistance measures in high Megohms. A diode check across the terminals shows 0.7v in one direction, so looks like some kind of semiconductor in it. Could I have been supplied an active sensor? And mine should be passive? I'm reading 12v coming from the ABS unit with the sensor unplugged.
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31st Dec 2021 6:24pm |
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dhallworth Member Since: 10 Oct 2011 Location: Glasgow Posts: 3084 |
Was the fault showing constantly before you’d even tried driving the car? If it was then plug it in where the NS sensor plugs in and see if the fault follows the sensor.
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31st Dec 2021 7:21pm |
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barbary Member Since: 29 Dec 2021 Location: Isle of Bute Posts: 14 |
The three lights are always on now as the sensor has been removed. With it connected and the abs plugged back in the lights are off but the fault is there when I try to drive. Lights will come on after about 30secs of driving. |
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1st Jan 2022 10:32pm |
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