Oxygen Sensor: Testing and Inspection

HEATED OXYGEN SENSOR (Sensor-1 and Sensor-2)




OXYGEN SENSOR HEATER INSPECTION
1. For sensor-2, remove console box.
2. Disconnect sensor coupler.
3. Using ohmmeter, measure resistance between terminals "VB" and GND" of sensor coupler.

Resistance of oxygen sensor-1 heater: 2 - 6 ohms at 20 °C, 68 °F

Resistance of oxygen sensor-2 heater: 4 - 10 ohms at 20 °C, 68 °F

If found faulty, replace oxygen sensor.

4. Connect sensor coupler securely.
5. Install console box if removed.