[Architex_mA8tey]

Originally Posted by Ricky22buk

He showed me the four graphs of the four speed sensors and they all looked identical, so I'm assuming that although that's what gave you the most trouble, I don't think that's where my fault lye's. When I turn my ignition on, the two lights in question light up as they should and go off again as they should. But when the car starts moving the come on permanently and have to be reset with the VCDS. So on that note :

1. Could the ABS pump and ecu module combined give my fault ? I assumed that because I could reset the fault lights and they didn't go on again until the car actually started moving that I could rule out an ecu module fault, and ABS pump failure....... I assumed that the lights wouldn't reset if I had those faults. In fact I thought for that very reason I could rule out all of the electrics?

2. Does anyone actually know if the ABS pump does run for a few seconds on start up to allow the ABS module to confirm the pump it's operational ?

I just cant get my head round this, and don't want to spend money unnecessarily until I can satisfy myself I'm working in the right area.

No mine wasn't any of the abs sensors themselves, it was a combination of the wiring issue and the abs ecu which i ended up changing. the replacement is now heat shielded to hopefully prevent any future issues from heat damaging the soldering in the ecu.

It really does sound to me like you would need to replace the ecu/abs unit, because if the sensors are reading correctly and the wiring is ok (I would still test continuity in case of the issue I highlighted) then it only leaves the pump and ecu combo which may need a speed signal from the wiring and sensors before it shows up the fault that may be inherent in the ecu.

I would get the ecu off the car and send to BBA reman and see if they can test it and fix it personally otherwise you'll be going around in that same circles that I did