Swift L4-1298cc 1.3L SOHC MFI (1997)
Heated Oxygen Sensor (HO2S): Testing and Inspection
Oxygen Sensor Heater
Oxygen Sensor Heater 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.
