Someone recently broke into my car and stole the complete steering column of my Punto Mk2 1.2/8v
After finding out that the dealer wanted to charge me more than the car was worth, I decided to buy a second hand column and fit it myself.
After I fitted it, it worked fine, including the power steering in both normal & city modes. However, after a few miles driving, the steering became heavy and the power steering warning light came on. I tried everything to reset it, including disconnecting the battery overnight, as recommended by some posters on various forums, but nothing worked.
I then decided that the steering probably needed recalibrating and so I took it to my dealer and asked them to do it. They connected it to their diagnostics system and told me that 'the system had disabled itself and they could not recalibrate it - sorry, that will be EURO 50 please' Needless to say I was pretty annoyed by their disinterest.
As an electronics engineer myself, I then decided to buy the multiecuscan software and an ELM327 so that I could inspect the system for myself.
I can connect to the steering ecu ok and I can see that their is a logged fault regarding the motor, which I can clear. I can also read out all the parameters (which is great
) but when I try the system adjustments, I have only partial success:Torque Sensor Calibration - Test runs OK
Torque Sensor Position Calibration - Test runs OK
Position Sensor calibration - FAILED TO EXECUTE - Incorrect Conditions for this test
System Calibration - FAILED TO EXECUTE
All tests performed with steering wheel & front wheels in the straight ahead position. All fuses connected with the power steering circuits have been checked. After doing these, I start the engine and the steering light comes on again immediately and the same fault is stored again
My questions:
1. Why should the Position & System Calibrations FAIL TO EXECUTE? What does 'Incorrect conditions for this test' mean?
2. What should the Position Potentiometer voltages 1 and 2 be, when the vehicle is in the straight ahead position? Mine are 2.4888v and 0.0000v respectively
3. Parameter Feedback Offset voltage on my system is 0.2352v whereas the parameter Max Feedback Offset Voltage is 0.1232. Why is my feedback offset voltage higher that the max value and what does this parameter tell me?
4. Does anyone have a set of figure for the same or a similar vehicle so that I can compare them?
I think the multiecuscan software should be able to help me fix my problem, but I would be very grateful for any advice or help from other users.
If anyone requires further information, please ask.
Many Thanks
Keith
