Section 51 (Engine Cooling System): Fan: Inspection

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT FLUID COUPLING ASSEMBLY
1. Check that the fluid coupling is not damaged and that no silicon oil leaks.
  If necessary, replace the fluid coupling.
  
  Fig 1: Inspecting Fluid Coupling Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002