Flow Control Actuator Description

The flow control actuator is installed on the outlet of the conventional vein type of the power steering pump. The actuator modulates fluid flow to the steering gear from the pump by current control from the SSPS module. At low speed, small current is supplied to the actuator. Then the actuator modulates flow high and steering effort becomes light.

At high speed, On the contrary, big current to the actuator. Low fluid flow and heavy steering effort. If there happens an actuator malfunction, by default its pintle valve opens the orifice 100% to supply light steering effort.

The maximum pumping pressure with SSPS option is 74.4-81.6 kg/cm2.

If you try to measure voltage at the actuator terminal with the connector removed, you can measure 6.5V.

Fig 1: Locating Flow Control Actuator

Courtesy of SUZUKI OF AMERICA CORP.

Fig 2: Vehicle Speed-Actuator Current Relation

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Fig 3: Flow Control Actuator Solenoid Resistance

Courtesy of SUZUKI OF AMERICA CORP.