ABSTRACT
When the vehicle is manoeuvred into or out of a parking space, or similar situation, the body system ECU collects road speed data from the ABS ECU. The body system ECU then outputs an appropriate electric current to the transducer valve. This regulates the pressure in the reaction chamber so that the effort required to turn the steering wheel is kept as low as possible. As the vehicle is driven away and the road speed
increases, the ECU analyses the road speed signals from the ABS ECU and varies the current flowing to the transducer valve so that the steering input effort can be maintained at the correct level for the driving conditions.
