Heated Oxygen Sensor: Inspection

1. Disconnect the oxygen sensor connector.
2. Using an ohmmeter, measure the resistance between terminals +B and HT.

   Resistance: 11 to 16 Ω at 20 °C (68 °F) 

   If the resistance is not as specified, replace the sensor.

   Fig 1: Measuring Resistance Between Terminals +B & HT Using Ohmmeter

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Torque: 44 N*m (450 kgf*cm, 32 ft.*lbf) 

3. Reconnect the oxygen sensor connector.

See DEFINITION OF TERMS