Oxygen Sensor: Testing and Inspection

INSPECTION

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





(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: 44 N.m (440 kgf.cm, 31 ft.lbf)

(c) Reconnect the oxygen sensor connector.

2. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR
(Bank 1 Sensor 2)
(a) Remove the passenger's seat.
(b) Take out the floor carpet.
(c) Disconnect the oxygen sensor connector.





(d) 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: 44 N.m (440 kgf.cm, 31 ft.lbf)

(e) Reconnect the oxygen sensor connector.
(f) Reinstall the floor carpet.
(g) Reinstall the passenger's seat.