AIR SUSPENSION SYSTEM FAIL-SAFE CHART


  1. FAIL-SAFE FUNCTION


    1. When an air suspension system malfunction is detected under the normal control operation, the suspension control ECU will suspend the switch control of the height control operation.

      Air Suspension System
      DTC No. Malfunction Item Fail-Safe Operation

      C1711

      C1712

      C1713

      C1714

      		 Height control sensor circuit malfunction To interrupt the height control.

      C1741

      C1742

      C1743

      C1744

      		 Height control solenoid valve circuit malfunction To interrupt the height control.
      C1745 Exhaust solenoid valve circuit malfunction To interrupt the height control.
      C1748 Low pressure tank valve malfunction To continue the height down control.
      C1751 Compressor relay coil malfunction To interrupt the height up control.
      C1752 Height control compressor motor circuit malfunction To interrupt the height up control.
      C1761 Continuous electric current to height control compressor motor To interrupt the height up control.
      C1762 Continuous electric current to exhaust solenoid To interrupt the height down control.
      C1781 Suspension control ECU Malfunction

      Non-volatile memory malfunction: To interrupt the height control.

      Excluding the above-mentioned: To continue the height control.
      C1782 Power source voltage malfunction To interrupt the height control.
      C1783 Speed signal communication error To continue the height control.
      C1787 Forward/rearward/sideways G sensor communication Error To continue the height control.
      C1789 Vehicle identification malfunction To continue the height control.
      U0122 Lost communication with vehicle dynamics control module Target vehicle height is fixed on normal height.
      U0124 Lost communication with lateral acceleration sensor module To continue the height control.
      U0140 Lost communication with main body ECU It is not possible to select luggage mode.
      U0293 Lost communication with HV ECU To continue the height control.