AIR SUSPENSION SYSTEM VEHICLE CONTROL HISTORY

Note

When checking the vehicle control history, make sure to record the output histories. Then, remove the histories and recheck the output histories again.


  1. CHECK VEHICLE CONTROL HISTORY (AIR SUSPENSION SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / Air suspension / Utility / Vehicle Control History (RoB).


      Chassis > Air suspension > Utility
      Tester Display
      Vehicle Control History (RoB)
      RoB Detection Item Detection Condition
      X2001 Steering Angle Sensor Malfunction The steering angle value received from the steering sensor via CAN communication is abnormal.
      X2004 Speed Sensor Malfunction The vehicle speed value received from the skid control ECU (brake actuator assembly)*1 or skid control ECU assembly*2 via CAN communication is abnormal.
      X200B VGRS System Malfunction The VGRS relative angle received from the VGRS ECU (front steering control ECU)*3 via CAN communication is abnormal.
      X200D NE Signal Malfunction The engine speed received from the ECM via CAN communication shows a value of 0, regardless of the vehicle moving (being driven).
      X204A Acceleration Sensor Malfunction The acceleration sensor value received from the acceleration sensor (yaw rate sensor) or skid control ECU (brake actuator assembly) via CAN communication is abnormal.
      X2051 Supply Voltage Malfunction The battery voltage applied to the suspension control ECU is less than 10 V or more than 16 V.
      X2052 Compressor Motor Excessive Run Time The operating frequency of the compressor motor (NO. 1 height control compressor) increases according to frequent vehicle height adjustments and control is stopped to prevent overheating.
      X2053 Continuous Current to Height Control Solenoid (FR)

      Continuous power supply time to the NO. 1 height control valve sub-assembly or NO. 2 height control valve sub-assembly is extended and control is stopped to prevent overheating.

      (When the area surrounding the compressor is hot, the permitted number of operations decreases.)
      X2054 Continuous Current to Height Control Solenoid (FL)
      X2055 Continuous Current to Height Control Solenoid (RR)
      X2056 Continuous Current to Height Control Solenoid (RL)
      X2057 Continuous Current to Exhaust Solenoid Continuous power supply time to the exhaust valve (NO. 1 height control compressor) is extended and control is stopped to prevent overheating.
      X2058 Continuous Current to Circuit Solenoid (NO.1) Continuous power supply time to the NO. 3 height control valve (NO. 1 height Control Compressor) is extended and control is stopped to prevent overheating.
      X2059 Continuous Current to Circuit Solenoid (NO.2)
      X205A Continuous Current to Circuit Solenoid (NO.3)
      X205B Continuous Current to Circuit Solenoid (NO.4)
      X2060 Control Time-Out (UP)

      Vehicle lift control time is extended and control is stopped. The following are possible causes:


      • Air leaks, blockage in air path due to ice/foreign objects, pressure drop in pneumatic with tube tank assembly

      • Change in the characteristics of the suspension bush during extremely low temperatures

      • The vehicle is on a rough road with a large amount of weight contributing to excessive load on the wheels
      X2061 Control Time-Out (DOWN)

      Vehicle lowering control time is extended and control is stopped. The following are possible causes:


      • Blockage in air path due to ice/foreign objects

      • Water splashed into the suspension or wheel arch

      • Interference between the vehicle body and bottom of the vehicle due to a foreign object

      • NO. 1 height control compressor malfunction
      X2062 Control Interruption (Irregular Ground)

      The vehicle is on a rough road.

      (The "sum of the vehicle height value for the front wheel RH, rear wheel LH", and the "difference between the vehicle height value for the front wheel LH and rear wheel RH" is equal to or greater than the specified amount.)
      X2063 Control Interruption (Tank Pressure) The pneumatic with tube tank assembly dropped below the specified amount due to an air leak.
      X2064 Control Interruption (Height Sensor Stuck) The height control sensor sub-assembly value is stuck.
      X2065 Control Interruption (Pressure Sensor Stuck) The height control pressure sensor or NO. 2 height control pressure sensor (height control way) value is stuck.

      • *1: w/ Vacuum Brake Booster

      • *2: w/o Vacuum Brake Booster

      • *3: w/ Variable Gear Ratio Steering System

  2. CLEAR VEHICLE CONTROL HISTORY (AIR SUSPENSION SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Enter the following menus: Chassis / Air suspension / Utility / Vehicle Control History (RoB)(Clear).

      Note

      By performing this procedure, all stored Vehicle Control History items will be cleared.