Component Inspection

Disconnect the Heated Oxygen Sensor (HO2S) connector (A).

Courtesy of KIA MOTORS AMERICA, INC.

Courtesy of KIA MOTORS AMERICA, INC.

Measure resistance between the HO2S terminals.

Front Heated Oxygen Sensor

Courtesy of KIA MOTORS AMERICA, INC.

Terminal	Function
2	Heater (+)
5	Heater (-)

Rear Heated Oxygen Sensor

Courtesy of KIA MOTORS AMERICA, INC.

Terminal	Function
3	Heater (+)
4	Heater (-)

Check that the resistance is within the specification.

Item	Specification
Front heated oxygen sensor (Ω)	2.5 (Room temperature)
Rear heated oxygen sensor (Ω)	3.0 (Room temperature)