Ignition Key Cylinder Light: Inspection

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT TRANSPONDER KEY AMPLIFIER
1. w/Engine immobilizer system:
  1. Connect the battery's positive (+) lead to terminal 2 and the negative (-) lead to terminal 6, and then check that the light comes on.
    OK: LED illuminates.
    
    If the result is not as specified, replace the transponder key amplifier.
    
    Fig 1: Identifying Transponder Key Amplifier (W/Engine Immobilizer System)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. w/o Engine immobilizer system:
  1. Connect the battery's positive (+) lead to terminal 2 and the negative (-) lead to terminal 1, and then check that the light comes on.
    OK: LED illuminates.
    
    If the result is not as specified, replace the transponder key amplifier.
    
    Fig 2: Identifying Transponder Key Amplifier (W/O Engine Immobilizer System)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002