Suspension Strut / Shock Absorber: Description and Operation

Electronic Shock Absorber Operation:

Front Damper Solenoids:

Rear Damper Solenoids:

The shock absorbers used on the EDC III system are similar to conventional twin tube dampers, but have two solenoid valves (arrows) each. These valves are held closed by spring pressure. This represents the firm setting with oil flowing through the piston and base valves. One of the damping valves is energized to open for the soft setting and the second valve is energized for the medium setting.

^ The two valves on each damper are never energized simultaneously

^ Damping can be varied front to rear but not from side to side

EDC III solenoid construction is identical for the soft and medium solenoids, though the soft solenoid has a larger orifice so more oil can pass through it.