Suspension Control System: Adjustment

1. Release the parking brake and stabilize the suspensions by pushing up and down on the corners of the vehicle.
2. Place the shift lever into the "N" position and settle the tires by moving the vehicle back and forth.
3. Start the engine.
4. On the height control switch, first press "HIGH" to raise the vehicle height, and then change the switch to "LOW" to lower it. Perform this operation one more time.
   NOTE: Make sure to release the parking brake and move the shift lever into the "N" position. 

(See INSPECTION )

(See FRONT WHEEL ALIGNMENT )

1. Start the engine and change the height control switch from the NORMAL position to the HIGH and LOW positions.

   Check the time until the height adjustment is completed and the amount of change in vehicle height.

   Adjustment time: 

   HEIGHT CONTROL SWITCH REFERENCE DATA
   
   

   From operation of height control switch to start of compressor.	Approx. 2 sec.
   From start of compressor to completion of height adjustment.	Approx. 20 sec.

   Amount of change in vehicle height: 

   HIGH position: 

   40 mm (1.57 in.) 

   LOW position: 

   4WD models: 

   -30 mm (-1.18 in.) 

   2WD models: 

   -15 mm (-0.59 in.) 

   Fig 1: Operating Height Control Switch & Checking Vehicle Height Change

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. While adjusting vehicle height in the HIGH position, start the engine and change the height control switch from the HIGH position to the NORM position.

   Check the time until the height adjustment is completed and the amount of change in vehicle height.

   Adjustment time: 

   HEIGHT CONTROL SWITCH REFERENCE DATA
   
   

   From operation of height control switch to open of exhaust valve.	Approx. 2 sec.
   From open of exhaust valve to completion of height adjustment.	Approx. 30 sec.

   Amount of change in vehicle height: 

   HIGH position: 

   40 mm (1.57 in.) 

   LOW position: 

   4WD models: 

   -30 mm (-1.18 in.) 

   2WD models: 

   -15 mm (-0.59 in.) 

   Fig 2: Checking Time Until Height Adjustment Is Completed

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

1. Set the height control switch in the HIGH position and raise the vehicle height.
2. Stop the engine.
3. Apply soapy water to the connections of the tubes and check if there is any air leakage.
   Fig 3: Applying Soapy Water To Connections Of Tubes

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

1. Suspend the vehicle height control by pressing the height control mode select switch.
2. Put the vehicle on a level surface.
3. Measure the vehicle height (C - D measurement) on the right side and left side.

   Standard vehicle height value: 

   See  SUSPENSION 

   Fig 4: Measuring Vehicle Height (C - D Measurement) On Right Side & Left Side

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
4. If the value in (c) differs from the vehicle height (C - D measurement), adjust it by following the procedures below:
   1. Loosen the nut.
   2. Move the height control sensor link back and forth along the slotted hole of the bracket.

      HINT:

      Move the link toward the front of the vehicle to raise vehicle height. Move the link toward the rear of the vehicle to lower vehicle height. Every 1 mm (0.039 in.) change in the installation position of the link causes vehicle height to change by approximately 2 mm (0.079 in.).

      Fig 5: Loosening Nut

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   3. Tighten the nut.

      Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) 

5. If the vehicle height cannot be adjusted by performing (d), adjust it again by following the procedures below.
   1. Loosen the 2 lock nuts of the height control sensor link.
   2. Adjust the vehicle height to the vehicle height (C - D measurement) by turning the link.

      HINT:

      Extend the link to raise vehicle height. Shorten the link to lower vehicle height. Every 1 turn of the link causes vehicle height to change by approximately 4 mm (0.157 in.).

   3. Tighten the 2 lock nuts.
      Fig 6: Loosening Lock Nuts Of Height Control Sensor Link

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

      Torque: 

      5.4 N*m (55 kgf*cm, 48 in.*lbf) 

6. Check that the lengths of the screw parts, "A" in the illustration, are within the standard values.

   Standard length: 

   6.5 to 15.0 mm (0.26 to 0.59 in.) 

7. Change the vehicle height. (From the normal position to the high position, and from the high position to the normal position)
8. Measure the vehicle height (C - D measurement) on the right side and left side.
9. Check if the vehicle height (C - D measurement) is within the specified range.

   HINT:

   If the values are outside the standard, perform the procedures from (d) to (i) again.

   Fig 7: Checking That Lengths Of Screw Parts, "A", Are Within Standard Values

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.