Repair service for your power steering control unit
The KOYO POWER STEERING ECU is the electronic control unit for the power steering system. The ECU monitors the speed of the car and sensor inputs from the steering column and uses this information to calculate how much steering assistance to give. When the steering fails most people will advise that the fault is with the steering column however it is most likely the ECU.
FAULT CODES CAN BE..
C1552 - Power supply malfunction PIG - Internal circuit of power steering unit
C1554 - Power steering failure
symptoms of failure can be
Heavy steering in one or both directions
No power to the unit | Loss of power steering | CAN bus faults.
part numbers can be
6900000522 225000-0070 K9100600 896500H02 K91-0060