Kia Rio: Description

Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Manifold Catalytic Converter. The sensor output voltage varies in accordance with the air/fuel ratio.

The sensor must be hot in order to operate normally. To keep it hot, the sensor has a heater which is controlled by the ECM via a duty cycle signal. When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.

Heated Oxygen Sensor (HO2S)

...

Specification

HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.4 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2] A/F Ratio (λ) ...

See also:

Hood switch Description
The hood switch is included as the influencing factors in the calculation of the ISG function. If the hood is open, the engine must not be started or stopped by the ISG function for safety re ...

Transaxle Control Module (TCM) Terminal input/ output signal Circuit Diagram
...

Engine compartment
1. Engine Coolant Reservoir 2. Engine Oil Filler Cap 3. Brake/Clutch Fluid Reservoir 4. Air Cleaner 5. Fuse Box 6. Negative Battery Terminal 7. Positive Battery Terminal 8. Radiator Cap 9. E ...