Suspension Control System: Precaution

WHEN USING JACK OR LIFT
1. When work is performed under the vehicle or when jacking the vehicle up, make sure to turn the power switch OFF
2. When performing the work that needs vehicle to rise with the power switch ON (READY), perform the following procedure to stop the vehicle height control operation of the suspension control ECU.
  1. Before the vehicle is raised, using SST, connect terminals 11 (OPA) and 4 (CG) of the DLC3.
    SST 09843-18040
  2. After the work is completed, lower the vehicle completely and remove the SST from the terminal of the DLC3.
    
    Fig 1: Identifying DLC3 Connector Terminal CG And OPA
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
WHEN ADDING AIR
NOTE: Only operate the height control compressor to add air for less than 3 minutes. In order to protect the height control compressor, if it is operated for 3 minutes continuously, its operation is prohibited for 10 minutes.
DISCONNECT AND CONNECT HEIGHT CONTROL TUBE (Type 1)
NOTE:
- Disconnecting and connecting the height control tube should be performed by hand to prevent dust or foreign objects from entering it.
- Be careful not to damage the height control tube.
1. Disconnect the height control tube.
  1. for Except Front Pneumatic Cylinder:
    Pinch A to disconnect the No. 1 connector and pull it out from the housing.
    
    Fig 2: Pinching No. 1 Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. for Front Pneumatic Cylinder.
    Pinch B to disconnect the air connector clip holder and pull it out from the No 1 connector. Pinch C to disconnect the No 1 connector and pull it out from the housing.
    
    Fig 3: Identifying Air Connector Clip Holder
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Set SST to the tube.
    SST 09730-00010
    
    Fig 4: Setting SST To Tube
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Insert SST into the housing to expand the claw of the plug or tube connector in the housing
  5. Pull out the tube with SST inserted.
    NOTE: Do not pull out the tube forcibly.
  6. Insert a screwdriver into the circular hole on the housing, and remove the tube connector, 2 O-rings and plate from the housing.
    HINT:
    
    The O-rings, plate and tube connector are non-reusable parts.
    
    Fig 5: Inserting SST Into Housing To Expand Claw Of Plug Or Tube Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Install 2 new O-rings and a new plate
  NOTE: When replacing the parts onto which the tube is to be installed with new ones, it is not necessary to perform this installation procedure.
  1. Apply MP grease to 2 new O-rings and a new plate, and then install them to the height control tube.
    NOTE:
    Install the plate between the O-rings.
    
    Air leaks may occur if dust or foreign objects come into contact with the O-rings.
    
    Fig 6: Identifying O-Rings And Plate
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Insert the tube onto which the 2 O-rings and plate are installed into the housing, and then lightly push them in with a piece of rolled up cardboard or equivalent.
    
    Fig 7: Identifying O-Rings And Plate Into Housing
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Push the tube connector into the housing until a clicking sound is heard.
    
    Fig 8: Locating Tube Connector Into Housing
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Install the height control tube.
  1. Push the air holder to the No. 1 connector until a clicking sound is heard.
    NOTE:
    Turn the claw of the connector 90° so that the claw is aligned with the housing port as shown in the illustration.
    
    Lightly pull on the tube to make sure that it is securely connected.
    
    Fig 9: Identifying Height Control Tube And No. 1 Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. for Front Pneumatic Cylinder:
    Push the air connector clip holder to the No. 1 connector until a clicking sound is heard.
    
    Fig 10: Pushing Air Connector Clip Holder To No. 1 Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DISCONNECT AND CONNECT HEIGHT CONTROL TUBE (Type 2)
NOTE:
- Disconnecting and connecting the height control tube should be performed by hand to prevent dust or foreign objects from entering it.
- Be careful not to damage the height control tube.
1. Disconnect the height control tube.
  1. Remove the holder.
    
    Fig 11: Identifying Holder And Clip
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Spread the clip and slowly pull the height control tube straight out.
    NOTE: Do not completely remove the clip except when replacing it.
  3. Remove the 2 O-rings.
    HINT:
    
    Some tubes are equipped with only 1 O-ring
    
    Fig 12: Identifying Clip Position
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Install the height control tube.
  1. If replacing the clip
    Hook one side of the new clip around the union groove, and slide the other side into the opposite side of the union groove
  2. If not replacing the clip:
    Apply MP grease to 2 new O-rings to and install them to the height control tube.
    
    NOTE: Air leaks may occur if dust or foreign objects come into contact with the O-rings.
    
    HINT:
    
    Some tubes are equipped with only 1 O-ring.
    
    Fig 13: Greasing O-ring(s) And Installing Height Control Tube
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Securely connect the height control tube straight onto the connector until a clicking sound can be heard
    NOTE: Connect the height control tube straight in order to prevent air leaks.
  4. Install the height control tube to the holder, being careful not to apply excessive force to the clip.