Hyundai Equus: Heated Oxygen Sensor (HO2S) Description and Operation
Second generation VI (2009–2026) / Hyundai Equus VI 2009-2026 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
Second generation VI (2009–2026) / Hyundai Equus VI 2009-2026 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
| 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.
Knock Sensor (KS) Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Remove the intake manifold (Refer to “Intake And Exhaust System” in EM group).
3.
Disconnect ...
Heated Oxygen Sensor (HO2S) Specifications
Specification
A/F Ratio (x)Output Voltage(V)RICH0.6 ~ 1.0LEAN0 ~ 0.4
ItemSpecificationHeater Resistance (x)Approx. 9.0 [21°C(69.8°F)]
...
See also:
Refrigerant Line Repair procedures
Replacement
1.
Discharge refrigerant from refrigeration system.
2.
Replace faulty tube or hose.
Cap the open fittings immediately to keep moisture or dirt out of the sys ...
Engine overheat
If your temperature gauge indicates overheating, you experience a loss of power,
or hear loud pinging or knocking, the engine is probably too hot. If this happens,
you should:
1.Pull off the road ...
Wheel replacement
When replacing the metal wheels for any reason, make sure the new wheels are
equivalent to the original factory units in diameter, rim width and offset.
✽ NOTICE
The front tire size is diff ...
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