Active Height Control Suspension On-Vehicle Inspection

Suspension. Land Cruiser. Urj200, 202 Grj200 Vdj200
Suspension Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. OPERATE HEIGHT CONTROL SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) AND CHECK CHANGE OF VEHICLE HEIGHT

  2. INSPECT FLUID PRESSURE

  3. INSPECT VEHICLE SPEED SENSING FUNCTION

Active Height Control Suspension -- On-Vehicle Inspection



1. OPERATE HEIGHT CONTROL SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) AND CHECK CHANGE OF VEHICLE HEIGHT
NOTICE:
  1. Perform the inspection with the vehicle empty.
  2. When operating the height control switch (integration control and panel assembly), operate the switch with the driver door opened, and then close the driver door after getting out of the vehicle.
HINT:
Vehicle height control starts just after closing the door.

  1. Set the tires to the specified tire pressure, and adjust all 4 wheels.

  1. For the front side, measure the ground clearance of the front adjusting cam bolt center.
    For the rear side, measure the ground clearance of the rear lower control arm front side center.

    HINT:
    Refer to the following for the measurements (Click here).

  1. Start the engine.



    Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. Push the height control switch (integration control and panel assembly) to change from "N" to "HI" mode.

  1. Check the time required for the height change and the changed amount of the vehicle height.

    Standard Value:
    Vehicle Condition
    		Fluid Temperature Condition
    		Reference Value
    "HI" mode (Up time)
    		20°C (68°F) +/-10°C (50°F)
    		Approximately 15 seconds or less
    Amount of Change in Vehicle Height:
    Item
    		Specified Condition
    Front
    		Approximately +50 mm (+1.97 in.)
    Rear
    		Approximately +60 mm (+2.36 in.)
    NOTICE:
    After vehicle height control has been completed, wait for approximately 20 seconds until the height is fixed securely, then check the changed amount of vehicle height.


    Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. Push the height control switch (integration control and panel assembly) to change from "N" to "LO" mode.

  1. Check the time required for the height change and the changed amount of the vehicle height.

    Standard Value:
    Vehicle Condition
    		Fluid Temperature Condition
    		Reference Value
    "LO" mode (Down time)
    		20°C (68°F) +/-10°C (50°F)
    		Approximately 10 seconds or less
    Amount of Change in Vehicle Height:
    Item
    		Specified Condition
    Front
    		Approximately -60 mm (-2.36 in.)
    Rear
    		Approximately -40 mm (-1.57 in.)
    NOTICE:
    After vehicle height control has been completed, wait for approximately 20 seconds until the height is fixed securely, then check the changed amount of vehicle height.


2. INSPECT FLUID PRESSURE
NOTICE:
With the vehicle empty, perform this inspection with 1 person sitting in the driver seat in order to confirm that the switch operation and vehicle height change have been completed.
HINT:
The average weight for one person is about 55 kg (121.3 lb).

  1. Turn the engine switch off.

  1. Connect the GTS to the DLC3.

  1. Start the engine and turn the GTS on.

  1. Press the UP button of the height control switch (integration control and panel assembly). Using the Data List, check the oil pressure when the vehicle height changes from NORMAL to HI.

    AHC
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Oil Pressure Sensor
    		Fluid pressure sensor reading /
    min.: -784.79 MPa (-8002.66 kgf/cm2, -113794.55 psi)
    max.: 784.76 MPa (8002.354 kgf/cm2, 113790.2 psi)
    		-
    		-

    Standard Pressure:

    Vehicle Condition
    		Fluid Temperature Condition
    		Reference Value
    When vehicle height changes from NORMAL to HI
    		20°C (68°F) +/-10°C (50°F)
    		The oil pressure begins rising when control is started and reaches approximately 13 MPa (132.6 kfg/cm2, 1885 psi) when the vehicle height is almost finished changing to HI.

  1. Set the vehicle height to LO and press the UP button of the height control switch (integration control and panel assembly). Then check the oil pressure when the vehicle height changes from LO to NORMAL.

    Standard Pressure:

    Vehicle Condition
    		Fluid Temperature Condition
    		Reference Value
    When vehicle height changes from LO to NORMAL
    		20°C (68°F) +/-10°C (50°F)
    		The oil pressure begins rising when control is started and reaches approximately 8 MPa (81.6 kfg/cm2, 1160 psi) when the vehicle height is almost finished changing to NORMAL.


3. INSPECT VEHICLE SPEED SENSING FUNCTION
HINT:
When the vehicle speed sensing function control operates, nothing displays on the indicator in the combination meter assembly.

  1. Turn the engine switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG) and the GTS on.

  1. Using the Data List, check the vehicle speed sensing function.

    AHC
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Height Mode
    		Height mode /
    NORMAL / ACCE LO / LO / STAN LO / FAST LO / L4 HI / HI / EX HI / LUGG LO
    		Actual conditions are displayed.
    		-

  1. When the transfer is in the L4 position:

    1. When the vehicle is driven at a speed of approximately 3 km/h (2 mph) or more, check that the vehicle height changes to HI using the Data List.

      OK:
      The display changes to HI.

    2. Using the Data List, check if the vehicle height changes from HI to L4 HI when the vehicle speed is 50 km/h (31 mph) or more.

      OK:
      The display changes to L4 HI.

  1. When driving at a high speed:

    1. Using the Data List, check that the vehicle height lowers when the vehicle height is NORMAL and the vehicle speed is 100 km/h (62 mph) or more.

      OK:
      The display changes to FAST LO.

    2. Using the Data List, check that the vehicle height returns to NORMAL when the vehicle speed is reduced to less than 80 km/h (50 mph).

      OK:
      The display changes to NORMAL.

  1. When vehicle height control is prohibited:

    1. Press the height control OFF switch (integration control and panel assembly) to prohibit vehicle height control.

    2. Drive the vehicle at 80 km/h (50 mph) or more with the vehicle height NORMAL, or drive the vehicle at 30 km/h (19 mph) or more with the vehicle height not NORMAL and, using the Data List, check that vehicle height control prohibition is canceled.

      AHC
      Tester Display
      		Measurement Item/Range
      		Normal Condition
      		Diagnostic Note
      Height Control Prohibition
      		Vehicle height control prohibition information/
      Permiss or Prohibi
      		Actual conditions are displayed.
      		-
      OK:
      The display changes from Prohibi to Permiss.