Heated Oxygen Sensor

HEATED OXYGEN SENSOR

INSPECTION

1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS (Bank 1 Sensor 1/ Except Calif.and Bank 1 Sensor 2)
a. Disconnect the oxygen sensor connector.




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

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

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 SENSORS