Hyundai Equus Manuals

Hyundai Azera: Heated Oxygen Sensor (HO2S) Description and Operation - Engine Control System - Engine Control/Fuel System - Hyundai Azera 2011-2024 Service ManualHyundai Azera: 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, ...

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Exhaust pipe and muffler
Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration, or damage. Start the engine and listen carefully for any exhaust gas leakage. Tighten connections or replace parts ...

Seat Heater Repair procedures
Inspection First Seat Heater 1. Check for continuity and measure the resistance between No.1 and NO.4 terminals. No.DescriptionNo.Description1Heater (+)3NTC (-)2NTC (+)4Heater (-) Standar ...

To keep locks from freezing
To keep the locks from freezing, squirt an approved de-icer fluid or glycerine into the key opening. If a lock is covered with ice, squirt it with an approved de-icing fluid to remove the ice. If th ...

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