Fail Safe

POWER STEERING CONTROL UNIT


Fail-Safe


EPS system





- EPS system enters the fail-safe mode (that allows the steering force to be controlled without impairing the driveablity) if any of the input/output values to/from EPS system (power steering control unit) deviate from the standard range.
- The power steering control unit controls the driving voltage to the power steering solenoid valve for maintaining the power steering assist force when the fail-safe function is activated. (The engine speed signals control EPS system if any vehicle speed signal error is detected.)