Steering Control Module

Power Steering Control Module

The control of the valve is by varying the current which is applied to it. The current signal is provided by the Control Module which inputs a vehicle speed signal from the Instrument Cluster.

The microprocessor and associated algorithm within the module, provides maximum output current (854mA) when the vehicle is stationary - the valve will be held closed, providing very easy steering. The current progressively decreases towards zero (1 5mA) as the frequency of the speed signal from the Instrument Cluster increases - the valve will be opening in stages. Consequently, an increasing amount of hydraulic pressure is applied to the reaction piston, which increases the feel to the driver.

Refer to PDU User Guide

The PDU will diagnose all electrical components of the system.

Before changing a component, check fuse No. 12 (10 A) in the driver's side fuse box on the fascia. However, if this fuse is faulty a number of other components will also fail to function.









Control Module Connections