Height Control Valve Sub-ASSY No.2: Replacement

WARNING: This page is about a different car, the 2004 Lexus RX 330. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Before replacement, press the height control OFF switch to stop the vehicle height control operation.
Be careful that the vehicle body lowers because the air in the pneumatic cylinder is discharged by disconnecting the pneumatic cylinder side air tube of the height control valve.
The height control sensor RR RH and height control valve No.2 have the same shape connectors, therefore they might be wrongly connected. When installing them, Connect the connector with the distinction. Mark (white tape) on the wire harness to the height control sensor RR RH.

REMOVE HEIGHT CONTROL VALVE SUB-ASSY NO.2
1. Disconnect the connector.
2. Using SST, disconnect the 3 height control tubes.
  SST 09730-00010
  
  HINT:
  
  For the disconnecting procedure of the (type 2) tube, refer to SUSPENSION CONTROL SYSTEM .
3. Disconnect the height control tube.
  
  Fig 2: Disconnecting Height Control Tube
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  For the disconnecting procedure of the (type 3) tube, refer to SUSPENSION CONTROL SYSTEM .
4. Remove the 2 nuts and the height control valve sub-assy No.2.
  
  Fig 3: Removing Height Control Valve Sub-Assy No. 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL HEIGHT CONTROL VALVE SUB-ASSY NO.2
1. Install the height control valve sub-assy No.2 with the 2 nuts.
  
  Fig 4: Installing Height Control Valve Sub-Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Torque: 5.4 N.m (55 kgf.cm, 48 in.lbf)
2. Coat the O-ring with MP grease.
3. Install the O-ring onto the height control tube.
4. Connect the height control tube.
  
  Fig 5: Connecting Height Control Tube
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  For the removal procedure of the (type 3) tube, refer to SUSPENSION CONTROL SYSTEM .
5. Install 6 new O-rings and 3 new plates to each installed part of the height control valve No.2 tubes.
  HINT:
  
  When the height control valve No.2 is replaced with a new one, it does not require a new O-ring.
6. Install the 3 height control tubes.
  
  Fig 6: Connecting Tubes & Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  For the removal procedure of the (type 2) tube, refer to SUSPENSION CONTROL SYSTEM .
7. Connect the connector.
  NOTE: Do not wrongly connect the connectors of the height control valve No.2 and height control sensor RR RH.
INSPECT AIR LEAK (See ON-VEHICLE INSPECTION )