Suspension Control ( Automatic - Electronic ): Description and Operation

System Outline

- The electric modulated suspension with height control is a system designed to maintain a constant vehicle height by means of an electro-pneumatic system in the rear suspension to cope with change in load such as passenger number and/or weight of cargo in the vehicle. With the three-height-control switch on the console, the driver can set the vehicle height from the three different height modes (High, normal and low): "High mode" for rough terrain and "Low mode" for passenger to get on/off, and for cargo to be loaded/unloaded
- This system has five basic controls as shown below:
- Auto leveling control
This control maintains a constant rear vehicle height regardless of change in load such as passenger number and/or weight of cargo in the vehicle.

- Vehicle height switchover control
This control switches the height mode to the mode selected with the height control switch
- High mode (+ 40 mm / 1.6 in.)
- Low mode (- 20 mm / 0.8 in.)

- Speed sensing control
Regardless of the initial setting of the vehicle height, "High mode" or "Low mode", this control automatically switches the vehicle height mode to the optimum "Normal mode" in the following conditions:
- When the vehicle speed reaches or exceeds 30 km/h with "High mode", or;
- When the vehicle speed reaches or exceeds 5 kohms/h with "Low mode".

- Subsequent control after ignition switch off
After the ignition switch is turned OFF, this control lowers the rear vehicle height for passengers to get off, etc.

- Height control OFF control
If the system is turned OFF with the vehicle height control switch, the vehicle can be jacked up or towed.