Inner Rear View Mirror: 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 INNER REAR VIEW MIRROR ASSEMBLY
1. Inspect operation of the electrochromatic inner mirror.
  1. Connect a positive (+) lead from the battery to terminal 4 and a negative (-) lead to terminal 1
  2. Attach black colored tape to the forward sensor to prevent it from sensing.
  3. Light up the mirror with a an electric light, and check that the mirror surface changes from bright to dark.
    Standard:
    
    Mirror surface changes from bright to dark.
    
    If the result is not as specified, replace the mirror assembly
    
    Fig 1: Inspecting Inner Rear View Mirror Assembly
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002