So it looks as if we have discovered it isn't either the rack or the motor, which is great, nor the ECU which is also great.Ozvtr wrote: ↑Mon Jan 06, 2020 11:05 pm My assumption would be that there was a bad connection between the steering ECU and the wiring connectors or between the BSM and the wiring connectors and you have fixed the connection by disturbing it. My guess is at the BSM. My recommendation would be a liberal squirt of "moisture displacement spray" on those connections. I would also look very carefully at the associated pins in the BSM and steering ECU for corrosion or damage.
At least you know it's NOT the ECU, it is unlikely that has gone intermittent.
I note that you have not said that the "reset" might have cured it, which I find interesting, as that is the conclusion I leapt to, and was not happy about.
I have to say that the underbonnet area is very clean and dry, plus the vehicle has only done about 60k miles but I am aware that a loose or dirty connection can come about in a variety of ways. I have yet to check the connections to the rack/motor, which as you now know gave a very low resistance reading, thinking that the recent work to the ARB may have disturbed them. And also, although the battery is in fine fettle, I have yet to test the alternator which really is an easy job and I will do very soon.
What also concerns me is that I have yet to discover where the sensors are that trigger the action of the rack motor via the ECU. I am concerned that one or more have these may have been damaged slightly when the car left the road. The front wheel hit the earth in the field hard enough to kick back and tear a ligament in my wife's thumb, so I worry that this shock may have caused further damage.
The vehicle is a 54 plate Pluriel with the 1600 petrol engine and sensodrive. Can you or anyone tell me where the steering ECU gets its signals from?
If it is to do with the ABS I have some experience of this (Land Rover Discovery 2) and am aware that reluctor rings and sensors do not tolerate too big a gap. Also, if it is the drive sensor, near the right-hand drive shaft, it was the right-hand wheel that hit the ploughed field, so that would make sense also if the drive shaft transmitted a shock to the drive sensor. But this was two summers ago.
The third thing is the slight squeak that we can hear when manoeuvering at low speeds, i.e. turning the wheel when parking. It isn't always there and it is not there now. It could still be not very much, but it could also be something. Wish I knew more about electric power steering!
Anyway, one thing I am thinking of doing first is to download, and pay for the Citroen diagnostic to go in my Foxwell scanner that I use with the Discovery.
If there is anything to report I will do so.
In any case, I am still very grateful for all help.