Heated Oxygen Sensor

1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
a. Disconnect the oxygen sensor connector.




b. Using an ohmmeter, measure the resistance between terminals +B and HT

Resistance:
- 11 - 16 Ohms at 20 °C (68 °F)
- 23 - 32 Ohms at 800 °C (1,472 °F)

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

Torque: 20 Nm (200 kg.cm, 14 ft.lb)

c. Reconnect the oxygen sensor connector.

2. INSPECT OPERATION OF HEATED OXYGEN SENSOR