Vitara 2WD V6-2.5L (2004)
Oxygen Sensor: Testing and Inspection
Oxygen Sensor-1 Inspection
Inspect oxygen sensor and its circuit referring to "DTC P0131 / P0132: HO2S-1 Circuit Low / High Voltage "DTC P0133: HO2S-1 Circuit Slow
Response". If malfunction is found, replace.
Oxygen Sensor Heater On-Vehicle Inspection (HO2S-1 and HO2S-2)
1. Disconnect HO2S-1 or HO2S-2 coupler.
2. Using ohmmeter, measure resistance between terminals "VB" and "GND" of H2S coupler (1). If found faulty, replace HO2S.
NOTE:
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Temperature of HO2S affects resistance value largely.
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Make sure that HO2S heater is at correct temperature.
Resistance of HO2S heater
11.7 - 14.3 Ohm (at 20 °C (68 °F)) for HO2S-2
5.0 - 6.4 Ohm (at 20 °C (68 °F)) for HO2S-1
3. Connect oxygen sensor coupler securely.
