Suspension Control ( Automatic - Electronic ): Description and Operation

Fig. 39 Fail-Safe Function Operation:

When a malfunction occurs, the fail-safe system activates to illuminate the active suspension warning lamp and to cut off the current to the fail-safe valve and/or regulate the pressure control valve operation. This gradually changes the oil pressure (applied to actuators for the four wheels) to a uniform pressure so the vehicle can continue to be driven safely.

NOTES:
^ A sound is produced when the fail-safe valve operates. This is not an indication of a problem since the fail-safe valve serves to close normal oil passages and, at the same time, link the supply pressure line [9,807 kPa (100 kg/cm2, 1,422 psi)] with the return pressure line [0 kPa (0 kg/cm2, 0 psi)].

^ When the pressure control valve function stops, the control current flowing to the solenoid is cut off (0 amperes), so vehicle height might change briefly.


Refer to Fig. 39 for major malfunctions and fail-safe operations.