Hyundai Azera: Heated Oxygen Sensor (HO2S) Description and Operation
Fifth generation HG (2011–2025) / Hyundai Azera 2011-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
Fifth generation HG (2011–2025) / Hyundai Azera 2011-2025 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:
Air Cleaner Components and Components Location
Components
1. Air duct2. Air cleaner lower cover3. Air cleaner element4. Air cleaner upper cover5. Breather hose6. Air in take hose7. Resonator8. Clamp9. Barometric pressure sensor
...
Tilt and telescopic steering
Tilt and telescopic steering allows you to adjust the steering wheel before you
drive.You can also raise it to give your legs more room when you exit and enter
the vehicle.
The steering wheel shoul ...
Intake Air Temperature Sensor (IATS) Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the IATS connector.
3.
Measure resistance between the IATS terminals 3 and 4.
4.
Check that the resistance is within the speci ...
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