Astra G How to test wheel sensors?

[wywywywy]

Hi all,

Basically I have KW coilovers fitted to my Astra Coupe Turbo a few weeks ago.
And since then (immediately), the TC and ABS lights are on.

I have checked the wheel sensor connectors and they seem to be secured. I then plugged in my fault code reader, and it read "C0040", which I believe is Right Front wheel sensor. I do not believe the sensor is faulty, I think it must be a connection somewhere. I have also disconnected battery but the fault code stays.

So does anyone know how to test a wheel sensor on the Astra G?

On the Agila... I could just jack the car up, spin the wheels with my hand, then plug my multimeter into a connector in the engine bay to read the voltage. But on the Astra G the sensor is integrated into the hub...

By the way, do TC and ABS still work in this situation?

Many thanks.

[shaun_astra]

send me your email address and i will email it all to you from the auto data discs i have show you every thing about that how to test what they should be reading etc

[wywywywy]

PM sent!
Thanks a lot.

[jake]

when one of my ABS sensors broke, i drove along at about 25mph then slammed on the brakes and listened out for what wheel locks up

[wywywywy]

Hi,

Basically I know which sensor is it coming from (i.e. Front Right), but I just need to know whether it is
- the actual sensor
- the connector on the sensor
- the connector on the ABS unit
- the ABS unit itself
- the ECU unit
- some wires somewhere inbetween
-etc
is at fault.

Thanks.

[Mark T]

you can connect an oscilloscope to the sensor and spin the wheel to see if you are getting a good signal.