Rear Upper Arm: Inspection

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT REAR NO. 2 UPPER CONTROL ARM ASSEMBLY
1. Secure the toe control link between aluminum plates in a vise.
2. Temporarily install the nut, and flip the ball joint stud back and forth 5 times as shown in the illustration.
3. Use a torque wrench to turn the nut continuously at a rate of 3 to 5 seconds per turn Take the torque reading on the 5th turn.
  
  Fig 1: Inspecting Rear No. 2 Upper Control Arm Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Torque: Turning torque
  
  0.5 to 3.4 N*m (5.1 to 35 kgf*cm, 4.5 to 30 in.*lbf)
  
  If the reading is not within the specified range, replace the rear No 2 upper control arm with a new one.
4. Check the dust boot for cracks or grease leaks