Air Fuel Ratio Sensor (3MZ-FE (RH Bank)): Replacement

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
REMOVE EXHAUST PIPE NO. 1 SUPPORT BRACKET FRONT (See REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY )
REMOVE EXHAUST PIPE NO. 1 SUPPORT BRACKET REAR (See REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY )
REMOVE EXHAUST PIPE ASSY FRONT (See REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY )
REMOVE EXHAUST MANIFOLD HEAT INSULATOR NO. 1
1. Disconnect the air fuel ratio sensor connector.
2. Remove the 3 bolts, then remove the exhaust manifold heat insulator No. 1
  
  Fig 1: Removing Exhaust Manifold Heat Insulator No. 1
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE AIR FUEL RATIO SENSOR
1. Using SST, remove the air fuel ratio sensor.
  SST 09224-00010
  
  Fig 2: Using SST, Removing Air Fuel Ratio Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL AIR FUEL RATION SENSOR
1. Using SST, remove the air fuel ratio sensor. SST 09224-00010
  
  Fig 3: Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Torque: 44 N.m (449 kgf.cm, 32 ft.lbf)
INSTALL EXHAUST MANIFOLD HEAT INSULATOR NO. 1
Torque: 8.5 N.m (87 kgf.cm, 75 in.lbf)
INSTALL EXHAUST PIPE ASSY FRONT (See REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY )
INSTALL EXHAUST PIPE NO. 1 SUPPORT BRACKET REAR (See REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY )
INSTALL EXHAUST PIPE NO. 1 SUPPORT BRACKET FRONT (See REMOVAL & INSTALLATION AND DISASSEMBLY & REASSEMBLY )
CONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
Torque: 5.4 N.m (55 kgf. cm, 48 in.lbf)
CHECK FOR EXHAUST GAS LEAKS
SYSTEM INITIALIZATION (See PRECAUTION )