Kia Niro: Engine Control System / Heated Oxygen Sensor (HO2S) Description and operation
| Description |
Heated Oxygen Sensor (HO2S), consisting of zirconium and alumina, is installed on both upstream and downstream of the Manifold Catalytic Converter (MCC) to detect the air/fuel ratio and send it to the ECM. 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) Specifications
Specification
HO2S [Bank 1/Sensor
1] (Linear)
Item
Specification
Heater Resistance (Ω)
2.5 - 4.0 [20°C(68°F)]
HO ...
Heated Oxygen Sensor (HO2S) Schematic diagrams
Circuit Diagram
Harness Connector
[Bank 1 / Sensor 1]
[Bank 1 / Sensor 2]
...
Other information:
Kia Niro 2017 (DE HEV) Service Manual: Inhibitor Switch Specification
Specification
Item
Specification
Power supply
12 V
Output type
Combination of output signals
Signal Code Table
P
P-R
R
...
Kia Niro 2017 (DE HEV) Service Manual: Knock Sensor (KS) Repair procedures
Removal
1.
Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
2.
Remove the intake manifold. (Refer to Engine Mechanical System - “Intanke
Manifold”)
3.
Remove the installat ...
