Heated Oxygen Sensor: Inspection

INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR (BANK 1 SENSOR 1)
1. Disconnect the oxygen sensor connector.
2. Using an ohmmeter, measure the resistance between the terminals +B and HT.
  Resistance:
  
  11 - 16Ω at 20°C (68°F)
  
  If the resistance is not as specified, replace the sensor.
  
  Torque: 44 N.m (450 kgf.cm, 31 ft.lbf)
3. Reconnect the oxygen sensor connector.
Fig 1: Measuring Resistance Between Terminals +B And HT
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR (BANK 1, SENSOR 2)
1. Remove the passenger seat.
2. Fold back the floor carpet.
3. Disconnect the oxygen sensor connector.
4. Using an ohmmeter, measure the resistance between the terminals +B and HT.
  Resistance:
  
  11-16Ω at 20°C (68°F)
  
  If the resistance is not as specified, replace the sensor.
  
  Torque:
  
  44 N.m (450 kgf.cm, 31 ft.lbf)
  
  Fig 2: Inspecting Heater Resistance Of Heated Oxygen Sensor (Bank1, Sensor2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Reconnect the oxygen sensor connector.
6. Reinstall the floor carpet.
7. Reinstall the passenger's seat.