Air Fuel Ratio Sensor: Removal

CAUTION:

Wear protective gloves when removing the sensor.
The exhaust pipe assembly is extremely hot immediately after the engine has stopped.
Confirm that the exhaust pipe assembly has cooled down before removing it.

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
REMOVE AIR FUEL RATIO SENSOR
1. Remove the 3 bolts, then remove the No. 2 exhaust manifold stay, (for LH Bank)
  
  Fig 1: Identifying No. 2 Exhaust Manifold Stay Bolts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the 2 air fuel ratio sensor connectors.
3. Using SST, remove the 2 air fuel ratio sensors from the exhaust manifold.
  SST 09224-00010
  
  Fig 2: Identifying Air Fuel Ratio Sensors With SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002