Oxygen Sensor (O2S) Heater/Heated Oxygen Sensor (Ho2S) Heater

Ensure ignition is off. Disconnect HO2S pigtail connector. Using DVOM, measure resistance between VB and GND terminals. See Fig 1 . Resistance should be 11.7-15.6 ohms at 68°F (20°C).

Fig 1: Identifying Heated Oxygen Sensor (HO2S) Terminals

Courtesy of SUZUKI OF AMERICA CORP.