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 engine switch off.
2. If the vehicle must be raised with its engine running, connect terminals 11 (OPA) and 4 (CG) of the DLC3 to stop the vehicle height control operation of the suspension control ECU.
  
  Fig 1: Identifying DLC3 Connector Terminals
  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.
- If the height control compressor is operated continuously, its operation is automatically stopped after 3 minutes and its operation is prohibited for 10 minutes to protect the height control compressor.
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: Disconnecting Height Control Tube (For Except Front Pneumatic Cylinder)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. for Front Pneumatic Cylinder:
    Pinch "B" to disconnect the holder air connector clip 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: Disconnecting Height Control Tube (For Front Pneumatic Cylinder)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Set SST to the tube.
    
    Fig 4: Setting SST To Tube
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    SST 09730-00010
  4. Insert SST into the housing to expand the claw of the plug or tube connector in the housing.
    
    Fig 5: Inserting SST Into Housing
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Pull out the tube with SST inserted.
    NOTE: Do not force the tube.
  6. Insert a screwdriver into the circular hole on the housing, and remove the No. 2 connector, 2 O-rings and plate from the housing.
    HINT:
    
    The O-rings, plate and No. 2 connector are non-reusable parts.
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 a straight tube.
    
    Fig 6: Identifying Plate And O-Rings
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    Install the plate between the O-rings.
    
    Air leaks may occur if dust or foreign objects come into contact with the O-rings.
  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: Inserting Tube Onto Which O-Rings And Plate
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Push the No. 2 connector into the housing until a clicking sound is heard.
    
    Fig 8: Pushing No. 2 Connector Into Housing
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Install the height control tube.
  
  Fig 9: Pushing Tube And No. 1 Connector To Housing
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Push the tube and No. 1 connector to the housing 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.
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 10: Disconnecting Height Control Tube
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Spread the clip and slowly pull the height control tube straight out.
    
    Fig 11: Spreading Clip
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    NOTE: Do not completely remove the clip except when replacing it.
  3. Remove the 2 O-rings.
    HINT:
    
    Some tubes are equipped with only one O-ring.
2. Install the height control tube.
  
  Fig 12: Identifying O-Rings To Height Control Tube
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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:
    Install 2 new O-rings to the height control tube and coat them with MP grease No. 2.
    
    NOTE: Air leaks may occur if dust or foreign objects come into contact with the O-rings.
    
    HINT:
    
    Some tubes are equipped with only one O-ring.
  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.