Heated Oxygen Sensor: Inspection

INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS
1. Disconnect the oxygen sensor connector.
2. Using an ohmmeter, measure the resistance between terminal +B and HT.
  Resistance: 11 - 16 Ωat 20°C (68°F)
  
  Fig 1: Measuring Resistance Between Terminal +B And HT Using Ohmmeter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the resistance is not as specified, replace the sensor.
  
  Torque:
  
  44 N.m (450 kgf.cm, 32 ft.lbf) for sensor 1
  
  20 N.m (200 kgf.cm, 14 ft.lbf) for sensor 2
3. Reconnect the oxygen sensor connector.
INSPECT OPERATION OF HEATED OXYGEN SENSORS (See DTC P0130, P0150, P2195, P2196, P2197, P2198 and DTC P0136, P0156 )