Heated Oxygen Sensor: Inspection

Bank 1, 2 Sensor 1, and Bank 1 Sensor 2:
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS
1. Disconnect the oxygen sensor connectors.
  
  Fig 1: Inspecting Heater Resistance Of Heated Oxygen Sensors - Bank 1 (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using an ohmmeter, measure the resistance between the terminals +B and HT.
  Resistance:
  
  Fig 2: Inspecting Heater Resistance Of Heated Oxygen Sensors - Bank 1 (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the resistance is not as specified, replace the sensor.
  1. Torque: 45 N.m (450 kgf.cm, 33 ft.lbf)
3. Reconnect the oxygen sensor connectors.
Bank 2 Sensor 2:
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR

Fig 3: Inspecting Heater Resistance Of Heated Oxygen Sensor - Bank 2 (1 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Take out the front side of the floor carpet.
2. Disconnect the oxygen sensor connector.
3. Using an ohmmeter, measure the resistance between the terminals +B and HT.
  Resistance:
  
  Fig 4: Inspecting Heater Resistance Of Heated Oxygen Sensor - Bank 2 (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the resistance is not as specified, replace the sensor.
  1. Torque: 45 N.m (450 kgf.cm, 33 ft.lbf)
4. Reconnect the oxygen sensor connector.
5. Reinstall the floor carpet.