Heated Oxygen Sensor: Inspection

WARNING: This page is about a different car, the 2004 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

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.
  
  Fig 1: Measuring Resistance Between Terminal +B & HT
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Resistance: 11 - 16 Ω at 20°C (68°F)
  If the resistance is not as specified, replace the sensor.
  1. Torque:
  2. 44 N.m (450 kgf.cm, 32 ft.lbf) for sensor 1
  3. 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, P2167, P2198: OXYGEN SENSOR CIRCUIT and DTC P0136: OXYGEN SENSOR CIRCUIT MALFUNCTION (BANK 1 SENSOR 2) DTC P0156: OXYGEN SENSOR CIRCUIT MALFUNCTION (BANK 2 SENSOR 2) )