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ABS light comes on at 70mph

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pitrat101
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PostPosted: Sun Mar 29, 2020 17:19    Post subject: ABS light comes on at 70mph Reply with quote

Hi guys, I recently fitted a 2nd gearbox and noticed it had one less sensor in the front of it, I left it out as was short on time, then noticed at 70mph the ABS light came on which has never done before. I put the sensor in and connected it back up but the same thing is still happening. Ive crossed pin 4 and 12 on OBD port and get 1 flash followed by 2 flashes of ABS light so code 12. Any help please?

Thanks in advance

Steve
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eithan h
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PostPosted: Mon Mar 30, 2020 16:06    Post subject: Reply with quote

code 12 means all is ok
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pitrat101
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PostPosted: Mon Mar 30, 2020 16:10    Post subject: Reply with quote

Now I'm more confused, anywhere to start looking?
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eithan h
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PostPosted: Mon Mar 30, 2020 16:15    Post subject: Reply with quote

auto or manual?
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pitrat101
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PostPosted: Mon Mar 30, 2020 16:58    Post subject: Reply with quote

manual.
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eithan h
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PostPosted: Mon Mar 30, 2020 17:18    Post subject: Reply with quote

have you let the code flash 3 times then watched for other codes?
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pitrat101
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PostPosted: Tue Mar 31, 2020 15:29    Post subject: Reply with quote

I never knew you had to leave for the second set of codes, I got code 23 after the initial code 12.
Thanks
Steve
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eithan h
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PostPosted: Tue Mar 31, 2020 16:28    Post subject: Reply with quote

thats transmission input abnormality, can you check that the sensor you fitted actually reaches the rods in the gearbox and there isn't an extension piece that has to go in first
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pitrat101
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PostPosted: Tue Mar 31, 2020 16:44    Post subject: Reply with quote

I never noticed on old gearbox and that's long gone. Will have to take console out and use a meter.
Is there a way to find out if there is a part that goes in there?
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eithan h
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PostPosted: Tue Mar 31, 2020 16:50    Post subject: Reply with quote

just look in the hole and gauge if the sensor looks like it will reach the rods inside, i remember a gearbox where it had an extension piece that people forgot but i can't remember if it's the trooper it might have been a subaru.
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pitrat101
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PostPosted: Thu Apr 02, 2020 15:05    Post subject: Reply with quote

Took console out again and tested, switch is not working. Works when pushed, so my question is does an earlier gearbox not support this abs switch? Or should there be something in before switch. I have looked in manual and cant find anything! Never noticed anything in broked gearbox.
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eithan h
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PostPosted: Thu Apr 02, 2020 15:43    Post subject: Reply with quote

What switch is it I’ve got a gearbo here I can look at
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pitrat101
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PostPosted: Thu Apr 02, 2020 15:51    Post subject: Reply with quote

Right hand side right at top close to bell housing, 1sr/2nd switch I believe.


Cheers
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pitrat101
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PostPosted: Fri Apr 03, 2020 15:58    Post subject: Reply with quote

Looks like there should be something in hole I think. I've got switch out again gunna take prop and exhaust off to see if I can get access and measure depth. Ive scoured workshop manuals but cant find this switch, just a blanking plug, and no sign of a spring, pin, ball bearing.
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eithan h
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PostPosted: Fri Apr 03, 2020 17:04    Post subject: Reply with quote

I had a look today and the one I checked it was just a hole with the rod behind and the switch worked straight off the rod there’s was no other pin in there
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