LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> LS 600hL >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Suspension Control >> Air Suspension System >> Fail-Safe Chart
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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 

      FAIL-SAFE CHART

      DTC Chart Malfunction Item Fail-safe Operation Fail-safe Deactivation Conditions
      C1711
      C1712
      C1713
      C1714
      Height control sensor circuit To interrupt the height control and damping control Returns to normal condition
      C1715
      C1716
      C1717
      Acceleration sensor circuit To interrupt the damping control Returns to normal condition
      C1731
      C1732
      C1733
      C1734
      Absorber control actuator circuit To interrupt the damping control, after moving to the 9th step (Except during actuator malfunction) Returns to normal condition
      C1741
      C1742
      C1743
      C1744
      Height control solenoid valve circuit To interrupt the height control Returns to normal condition
      C1745 Exhaust solenoid valve circuit To interrupt the height control Returns to normal condition
      C1751 Suspension control relay circuit To interrupt the height control Returns to normal condition
      C1752
      C1761
      Lock is powered continuously or powered excessively in height control compressor motor To interrupt the height control Returns to normal condition
      C1762 Continuous electric current to exhaust solenoid valve To interrupt the height control Returns to normal condition
      C1781 Suspension control ECU To continue control Returns to normal condition
      C1782 Power source voltage To interrupt the height control and damping control Returns to normal condition
      C1783 Vehicle speed sensor circuit Control is canceled after setting the step of the front and rear absorber control actuator at 9 Returns to normal condition
      C1784 Steering angle sensor To interrupt the damping force of rolling control Returns to normal condition
      C1785 Steering control ECU To interrupt the damping force of rolling control Returns to normal condition
      C1787
      C1788
      Yaw rate sensor To interrupt the damping force of rolling control Returns to normal condition
      U0100
      U0101
      U0124
      U0293
      CAN communication system To continue control Returns to normal condition
      U0122
      U0132
      CAN communication system Control is canceled after setting the step of the front and rear absorber control actuator at 9 Returns to normal condition
      U0126
      U0130
      CAN communication system To interrupt the damping force of rolling control Returns to normal condition