Oxygen Sensor: Testing and Inspection

HEATED OXYGEN SENSOR

INSPECTION

1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR (Bank 1 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 Nm (450 kg.cm, 31 ft.lb)

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 Nm (450 kg.cm, 31 ft.lb)

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