Alfa 159 1750 TBI CAN bus problem
I have a big problems with my new Alfa 159 1750 TBI and I hope you can help me:
When I drive on the highway, the temperature lower gradually to 60-70 ° C
When it arrives to 60C °, it falls directly to 50 ° C and all the CAN system that fails: ASR, DSC, Hill ... turbo pressure regulator etc ...
Erasing the fault and everything works again normally ..
The car can drive several hours before it happened.
Temperature sensor replaced, it does not matter
I have 3.3 volts to the terminals (this is normally 5 volts?)
Weird thing: I feel that this only happens when the car is on a slope, never dish, are there any inclination sensors in the car?
I have a friend Electronics Engineer who said he was a leak current in the car, so the decline of T ° (because it is a resistor) to a certain threshold then the whole system will fault.
Someone had the same problem please? I need electrical diagram of 1750 TBI engine.
Thank's for help and best wishes for new year