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Home >> Suzuki >> 2011 >> SX4 2WD L4-2.0L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Oxygen Sensor >> Testing and Inspection >> Heated Oxygen Sensor (HO2S) Heater On-Vehicle Inspection
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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 HO2S.

NOTE:
Temperature of sensor affects resistance value largely. Make sure that sensor heater is at correct temperature.

HO2S heater resistance
5.0 - 6.4 ohms at 20 °C (68 °F)

Viewed from terminal side





3) Connect sensor connector securely.
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