Hyundai Azera: Heated Oxygen Sensor (HO2S) Description and Operation
Fifth generation HG (2011–2024) / Hyundai Azera 2011-2024 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
Fifth generation HG (2011–2024) / Hyundai Azera 2011-2024 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
| Description |
Heated Oxygen Sensor (HO2S) consists of the zirconium and the
alumina and is installed on upstream and downstream of the Warm-up
Catalytic Converter (WCC).
After it compares oxygen consistency of the atmosphere with
the exhaust gas, it transfers the oxygen consistency of the exhaust gas
to the ECM. When A/F ratio is rich or lean, it generates approximately
1V or 0V respectively. In order that this sensor normally operates, the
temperature of the sensor tip is higher than 370°C (698°F). So it has a
heater which is controlled by the ECM duty signal.
When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.
Knock Sensor (KS) Repair procedures
Removal
[Knock Sensor #1 (Bank 1)]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the knock sensor connector (A).
3.
Remove the intake man ...
Heated Oxygen Sensor (HO2S) Specifications
Specification
[Bank 1 / sensor 2, Bank 2 / sensor 2]
A/F Ratio (?)Output Voltage(V)RICHMin. 0.8LEANMax. 0.1
ItemSpecificationHeater Resistance (?)3.3 ~ 4.1[20°C(68°F)]
[Bank 1 / sensor 1, ...
See also:
Input Speed Sensor Schematic Diagrams
Circuit Diagram
...
Torque Converter Control Solenoid Valve (T/CON_VFS) Schematic Diagrams
Circuit Diagram
...
Temperature Control Actuator Description and Operation
Description
1.
Heater unit includes mode control actuator and temperature control actuator.
2.
Temperature control actuator is located at the heater unit.
It regulates the temperature by the ...
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