Component Description
| Component parts | Reference/Function |
|---|---|
| Power steering control unit | " POWER STEERING CONTROL UNIT " |
| Power steering solenoid valve | " POWER STEERING SOLENOID VALVE " |
| Combination meter | Transmits vehicle speed signal to power steering control unit. |
| ECM | Transmits engine speed signal to power steering control unit. |
OPERATION PRINCIPLE
During Parking (When Turning The Steering Wheel To The Right.)
Scheme 1
- Power steering solenoid valve is closed while a vehicle is stopped.
- Pinion "1R", "2R" and "3R" are closed depending on steering torque of steering wheel.
- Oil pressure "P" in the gear housing assembly is the sum of oil pressures occurred in "2R" and "3R". This results in a light steering force because of high pressure.
During High-speed Operation
Scheme 2
- Power steering solenoid valve is opened during high-speed operation.
- Pinion "1R", "2R" and "3R" are closed depending on steering torque of steering wheel.
- Oil pressure "2R" does not occur because the power steering solenoid valve is on full throttle.
- Oil pressure "P" in the gear housing assembly includes only oil pressure occurred in "3R" and results in a heavy steering force.
Description
- Hard steering when fully turning the steering wheel.
- Light steering when driving at a high speed.