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Suspension Control System: Precaution

  1. 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.
  2. 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.
    Fig 1: Identifying DLC3 Connector Terminals
    G04944086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. 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: Identifying No. 1 Connector & Housing
        G04944087Courtesy 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: Locating Holder Air Connector Clip
        G04944088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Set SST to the tube.

        SST 09730-00010 

        Fig 4: Setting SST To Tube
        G04944089Courtesy 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 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.

        Fig 5: Inserting SST Into Housing
        G04944090Courtesy 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 a straight 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 Plate & O-Rings
          G04944091Courtesy 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: Inserting Tube Onto 2 O-Rings & Plate
        G04944092Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Push the No. 2 connector into the housing until a clicking sound is heard.
        4. Fig 8: Locating No. 2 Connector
        G04944093Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the height control tube.
      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 below.
        • Lightly pull on the tube to make sure that it is securely connected.
        Fig 9: Identifying Tube & No. 1 Connector
        G04944094Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. 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: Identifying Clip & Holder
        G04944095Courtesy 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 one O-ring.

        Fig 11: Identifying O-Rings
        G05847997Courtesy 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:

        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.
        Fig 12: Identifying Height Control Tube
        G04944097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        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.
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