Steering Sensor
WARNING: This page is about a different car, the 2013 Ford Fiesta. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The steering sensor contains a clockspring that will be damaged if the steering column is not handled correctly. To prevent damage to the steering sensor, use the service bolt (HB1) to lock the steering column in the straight ahead position before disconnecting the steering column from the steering gear. Damage caused to the steering sensor by failing to lock the steering when disconnecting the column from the steering gear leads to a complete failure of the EPAS system and requires a new EPAS column to be installed.
The steering sensor provides the PSCM with information on the direction, speed and amount of force being applied to the steering wheel. The steering sensor is a split sensor that monitors the steering inputs from the driver and the output side of the EPAS assembly. The PSCM uses the inputs from the sensor to determine the amount of steering assist required and adjusts steering efforts based on the sensor inputs. The sensor is a 5-volt dual analog sensor with an output voltage range of 0.25 volt to 4.75 volts. When the steering wheel is turned to the left, the left signal increases while the right signal decreases, likewise when the steering wheel is turned to the right, the right signal increases while the left signal decreases.