Oxygen Sensor: Testing and Inspection

HEATED OXYGEN SENSOR




COMPONENTS

INSPECTION




INSPECT HEATER RESISTANCE OF OXYGEN SENSOR
a. Disconnect the sensor connector.
b. Using an ohmmeter, measure the resistance between terminals +B and HT.

Temperature Resistance
at 20 °C (68 °F) 11 - 16 Ohm
at 800 °C (1,472 °F) 23 - 32 Ohm

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

Torque: 44 Nm (450 kg.cm, 32 ft.lb)

c. Reconnect the sensor connector.