AIR FUEL RATIO SENSOR (for Sensor 1): Removal

WARNING: This page is about a different car, the 2006 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
REMOVE COOL AIR INTAKE DUCT SEAL (See REMOVAL )
REMOVE ENGINE ROOM COVER SIDE RH (See REMOVAL )
REMOVE ENGINE ROOM SIDE COVER LH (See REMOVAL )
REMOVE FRONT FLOOR BRACE CENTER (See REMOVAL )
REMOVE NO. 1 FLOOR PANEL BRACE REAR (See REMOVAL )
DISCONNECT OXYGEN SENSOR (See REMOVAL )
REMOVE EXHAUST PIPE ASSEMBLY FRONT (See REMOVAL )
REMOVE BATTERY (See REMOVAL )
REMOVE POWER STEERING ECU ASSEMBLY (See REMOVAL )
REMOVE BATTERY TRAY
REMOVE NO. 1 RELAY BLOCK COVER
REMOVE NO. 4 ENGINE WIRE
REMOVE NO. 3 RELAY BLOCK ASSEMBLY
1. Remove the 2 bolts, nut and engine room relay block assembly.
REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH
1. Disconnect the air fuel ratio sensor connector.
2. Remove the 6 nuts and exhaust manifold subassembly LH.
3. Remove the gasket from the cylinder head.
  
  Fig 1: Removing Nuts Of Exhaust Manifold Sub-Assembly LH
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)
1. Disconnect the air fuel ratio sensor
2. Using SST, remove the air fuel ratio sensor from the exhaust manifold RH.
  SST 09224-00010
  
  Fig 2: Removing Air Fuel Ratio Sensor From Exhaust Manifold RH Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE AIR FUEL RATIO SENSOR (for Bank 2 Sensor 1)
1. Using SST, remove the air fuel ratio sensor from the exhaust manifold LH.
  SST 09224-00010
  
  Fig 3: Removing Air Fuel Ratio Sensor From Exhaust Manifold LH Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002