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Oxygen Sensor: Testing and Inspection
1.
Disconnect sensor coupler.
2.
Using ohmmeter, measure resistance between terminals "VB" and "GND" of sensor coupler.
NOTE: Temperature of sensor affects resistance value largely. Make sure that sensor heater is at correct temperature.
Resistance of oxygen sensor heater: 11.7 - 15.6 ohms at 20°C, 68°F -
If found faulty, replace
oxygen sensor.
3.
Connect sensor coupler securely.
