I have a 2007 2.2 Diesel. I love the car but I have an ABS issue that is driving me mad and the quotes from the main Honda agent to rectify seem a little steep. :o(

When the ABS light first appeared, the codes indicated something was wrong with the sensors on the rear wheels, both sides. I replaced the sensors on both rear wheels, and have checked with an oscilloscope, and can see the sensors pulsing as I would expect as I turn the wheel.

When I start the car and begin to move off the ABS light goes out - but then when I hit 20 / 30mph the lights come back on again.

The Honda main dealer suggests that this is because the sensors were not genuine Honda. I find this a little hard to believe - I can see the waveform being generated by the sensors - however admittedly I don't have a reference trace to compare with, and I can't tell what the signal is like at speed. (I'm seeing around 0.9v pk-pk at low speed truning the wheel by hand.) There is a large difference in cost between the dealer supplied part (£160 each!) vs the independently obtained part (£20 each), and I doubt third party suppiers would bother to sell them if they don't work.

Is there some sort of calibration that must be done in order to 'tune in' the new sensors, or are Honda's unusually sensitive to non-honda supplied sensors?

Can anybody point me to a wiring diagram showing the pin out at the ABS control unit end so I can check the wiring looms?

Thanks!

Edited by Captain Zetec on 24/05/2015 at 23:05