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Speed Sensor 2 ?

jonny8ball
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jonny8ball Collaborator

jonny8ball

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Did a diagnostics check on the car and it seems to be the second flash thats the longest.

From what im told this is the speed sensor 2 thats causing the upsets.

Has anyone any info on it? like were it is and what to check when i get to looking at it??

Anyone help me out :)

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Duncan Grand Master

Duncan

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I'm not sure what code 2 is, but if it is a speed sender start with the abs sensors, they are wired into the hub next to the driveshaft. make sure they are present, no wiring damage etc

What is the actual problem with the car? 4wd light on?

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jonny8ball Collaborator

jonny8ball

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I'm not sure what code 2 is, but if it is a speed sender start with the abs sensors, they are wired into the hub next to the driveshaft. make sure they are present, no wiring damage etc

What is the actual problem with the car? 4wd light on?

It says its a speed sensor when i put it thru its tests (sensor 2) no 4wd light its the power button its flashing once the cars turned on rather than lightin up then switching off, this means the car has found a fault!

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chook Mentor

chook

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It says its a speed sensor when i put it thru its tests (sensor 2) no 4wd light its the power button its flashing once the cars turned on rather than lightin up then switching off, this means the car has found a fault!

Does it reappear when you erase the codes, drive and test again ? does it drive ok ? could have just been a one-off fault that has stayed in the memory.

The speed sensor 2 relates to the Auto tranny diagnostic, so shouldnt have anything to do with ABS, you would think ??

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jonny8ball Collaborator

jonny8ball

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Does it reappear when you erase the codes, drive and test again ? does it drive ok ? could have just been a one-off fault that has stayed in the memory.

The speed sensor 2 relates to the Auto tranny diagnostic, so shouldnt have anything to do with ABS, you would think ??

Yes it comes back after doing the tests I've done it twice! What should I check to do with speed sensor 2, were is it at? Whats it do?

Car seems fine but there is def something up if its bringing a fault up in the checks!!! Would like to sort it!!!

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chook Mentor

chook

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Yes it comes back after doing the tests I've done it twice! What should I check to do with speed sensor 2, were is it at? Whats it do?

Car seems fine but there is def something up if its bringing a fault up in the checks!!! Would like to sort it!!!

ill go through the workshop manual tonght when i get home, see what i come up with.

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chook Mentor

chook

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These are taken from an R34 manual, same as S2, but should be similar to S1.

Anyway, Speed Signal 2 looks to be the signal produced by the instrument panel/meter and sent to the ecu (taken from the speed signal 1 in transmission/gearbox). Could be a continuity problem in the wiring or a electronic problem in your instrument panel. Best to get the multimeter out, or swap an instrument panel with someone if you can.

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jonny8ball Collaborator

jonny8ball

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These are taken from an R34 manual, same as S2, but should be similar to S1.

Anyway, Speed Signal 2 looks to be the signal produced by the instrument panel/meter and sent to the ecu (taken from the speed signal 1 in transmission/gearbox). Could be a continuity problem in the wiring or a electronic problem in your instrument panel. Best to get the multimeter out, or swap an instrument panel with someone if you can.

Thanks for all your help!!! It started when I got the car so I'm wondering if its the chip that changes the dials from kph to mph???? If its the dials and there is no real prob is it worth hunting it down?? Could something worse come from this???

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jonny8ball Collaborator

jonny8ball

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it would affect the behaviour of the auto eg timing of the gear changes, if it was me, i would change it back. If you want mph you could use a turbo timer/boost controller/safc etc

I'll look into that. Cheers buddy!

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