LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2008 >> LS 600hL >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Suspension Control >> Air Suspension System >> Operation Check

Operation Check

  1. CHECK ABSORBER CONTROL ACTUATOR OPERATION 
    1. Remove the actuator with its connectors still connected.
    2. Turn the power switch OFF.
    3. Using SST, connect the terminals 12 (TS) and 4 (CG) of the DLC3

      SST 09843-18040 

    4. Turn the power switch ON (READY)
      Fig 1: Identifying DLC3 Connector Terminal TS And CG
      G05773692Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Check that the absorber control indicator light "SPORT" is blinking in test mode.

      HINT:

      If the absorber control indicator light does not blink, inspect the indicator circuit and TS and CG terminal circuit

      TROUBLE AREA REFERENCE CHART

      Trouble Area See procedure
      Indicator circuit INDICATOR CIRCUIT 
      TS and CG terminal circuit TS AND CG TERMINAL CIRCUIT 
      Fig 2: Blinking Pattern Of Absorber Control Indicator Light
      G05773693Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Check absorber control actuator operation
      1. Starting from the above mentioned position, each time the brake pedal is depressed, the absorber control actuator position will increase by 2 steps (1 (SOFT) → 3 → 5 → 7 → 9 → 11 → 13 → 15 → 17 (HARD)). At this time, bounce the vehicle and check that the shock absorber is becoming harder

        HINT:

        • Every time the brake pedal is depressed, the absorber control actuator rotates in the soft to hard direction in 15° intervals up to a maximum angle of 120°.
          Fig 3: Identifying Absorber Control Actuator Position Angle
          G04944109Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • To hold the absorber control actuator at a specific position, adjust it using the above mentioned procedure, then increase the vehicle speed to 5 km/h (3 mph) After that, the absorber control actuator position does not change until the power switch is turned OFF
        • If the absorber control actuator does not operate, inspect the absorber control actuator circuit and absorber control actuator installation condition.
  2. CHECK HEIGHT CHANGE OPERATION 
    1. Turn the power switch ON (READY), press the height control switch and adjust the vehicle height from NORMAL to HEIGHT HIGH

      OK: Height control compressor begins operation within about 2 seconds after switch operation. Height adjustment finishes within about 60 seconds after height control compressor begins operation. Change in vehicle height is 10 to 30 mm (0.394 to 1.18 in.). 

      Fig 4: Adjusting Vehicle Height From Normal To Height High
      G05773695Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. With the vehicle in the HEIGHT HIGH position, press the height control switch and return the vehicle to NORMAL

      OK: Release of air begins within about 2 seconds after switch operation. Height adjustment finishes within about 60 seconds after release of air begins. Change in vehicle height is 10 to 30 mm (0.394 to 1.18 in.). 

      Fig 5: Returning Vehicle To Normal Position
      G05773696Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK HEIGHT ADJUSTMENT OPERATION 
    1. Turn the power switch OFF and have 4 people get into the vehicle (2 in the front and 2 in the rear).

      HINT:

      The average weight for one person is about 55 kg (121.31b)

    2. Turn the power switch ON (READY) and check the amount of time until height adjustment finishes
      Fig 6: Identifying Height Adjustment Operation
      G05773697Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Height control compressor begins operation within about 2 seconds after turning the power switch ON (READY). 

      Height adjustment finishes within about 100 seconds after height control compressor begins operation. 

    3. Turn the power switch OFF and have the 4 people get out of the vehicle.
    4. Turn the power switch ON (READY) and check the amount of time until height adjustment finishes

      OK: Release of air begins within about 2 seconds after turning power switch ON (READY). Height adjustment finishes within about 50 seconds after release of air begins. 

      Fig 7: Identifying Height Adjustment Operation
      G05773698Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. CHECK CONNECTIONS OF TUBES FOR AIR LEAKAGE 
    1. Set the height control switch in the "HEIGHT HIGH" position and raise the vehicle height.
    2. Turn the power switch OFF.
    3. Apply soapy water to the connections of the tubes and check if there is any air leakage
      Fig 8: Locating Connections Of Tubes
      G04944110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals