Control Valve Assembly
WARNING: This page is about a different car, the 2002 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
The control valve assembly consists of leveling valves for adjusting the vehicle height and gate valves for controlling right-left wheel communication function. There are 4 valves each for the front and rear. See Fig 1.
- Leveling Valve - This valve opens and closes the oil passage between the pump and the gas chamber located at each wheel. Normally the oil passage remains closed. During vehicle height control, the oil passage opens in accordance with the signal received from the suspension control ECU. See Fig 2.
- Gate Valve - This valve opens and closes the oil passage between the right and left shock absorbers. Normally the oil passage remains open connecting the right and left shock absorbers. When the suspension control ECU determines that the oil passage between the right and left shock absorbers must be closed, the gate valve activates to close the oil passage. See Fig 3.