Oxygen Sensor: Testing and Inspection

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 Ohm at 20 °C, 68 °F

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

If found faulty, replace oxygen sensor.

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