Oxygen Sensor: Testing and Inspection

INSPECTION

1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS (BANK 1, 2 SENSOR 1 AND BANK 1 SENSOR 2)
(a) Disconnect the oxygen sensor connectors.





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

Resistance: 11 - 16 Ohms at 20° C (68° F)

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

Torque: 45 N.m (450 kgf.cm, 33 ft.lbf)

(c) Reconnect the oxygen sensor connectors.
2. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR (BANK 2 SENSOR 2)
(a) Take out the front side of the floor carpet.





(b) Disconnect the oxygen sensor connector.
Using an ohmmeter, measure the resistance between the terminals +B and HT.

Resistance: 11 - 16 Ohms at 20° C (68° F)

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

Torque: 45 N.m (450 kgf.cm, 33 ft.lbf)

(c) Reconnect the oxygen sensor connector.
(d) Reinstall the floor carpet.
3. INSPECT OPERATION OF HEATED OXYGEN SENSOR