SX4 4WD L4-2.0L (2008)
Oxygen Sensor: Testing and Inspection
Heated Oxygen Sensor (HO2S) Heater On-Vehicle Inspection
Heated Oxygen Sensor (HO2S) Heater On-Vehicle Inspection
1. Disconnect sensor connector.
2. Using ohmmeter, measure resistance of sensor heater between terminals "VB" and "GND" at sensor connector.
If found faulty, replace oxygen sensor.
NOTE: Temperature of sensor affects resistance value largely. Make sure that sensor heater is at correct temperature.
