Description & Operation
All models are equipped with variable power assist. System has an electronically controlled flow control valve integrated within the steering gear box. Valve is regulated by an Electronic Control Unit (ECU), located behind the glove box. The ECU controls the valve to reduce hydraulic pressure to the steering gear at high speeds, and increase hydraulic pressure at low speeds. Increased hydraulic pressure decreases steering effort at low speed. Decreased pressure increases steering effort at high speeds.
Steering system also uses a belt-driven vane type hydraulic pump, rotary piston pinion gear assembly and an oil reservoir. The pump mounts on the front of the engine. Two different rack designs are used. The 100 models use a rack assembly supported at both ends. The steering link bracket is attached to center portion of rack, through a window that exposes the rack. Rubber boots protect exposed portions of the rack. See Fig 1 .