Oxygen Sensor: Testing and Inspection
INSPECTION1. 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 Nm (450 kg.cm, 33 ft.lb)
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 Nm (450 kg.cm, 33 ft.lb)
c. Reconnect the oxygen sensor connector.
d. Reinstall the floor carpet.
3. INSPECT OPERATION OF HEATED OXYGEN SENSOR