Hyundai Santa Fe: Engine Control System / Heated Oxygen Sensor (HO2S). Description and operation

Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Manifold Catalytic Converter. It 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...

Heated Oxygen Sensor (HO2S). Specifications

Specification HO2S [Bank 1 / Sensor 1] [Euro-V] Item Specification Heater Resistance (Ω) 2...

Other information:

Hyundai Santa Fe (TM) 2019-2024 Service Manual: Engine Control Module (ECM). Schematic diagrams

ECM Terminal and Input/Output signal ECM Terminal Function Connector A Pin No Description Connected to 1 Power ground Chassis Ground 2 - - 3 - - 4 - - 5 - - 6 Fuel Sender Signal Fuel Sender 7 - - 8 - - 9 - - 10 - - 11 - - 12 - - 13 - - 14 - - 15 Stop Lamp Signal Stop Lamp 16 Brake Test Switch Brake Switch 17 18 - 19 - 20 Output Speed (Supply) ATM Solenoid Valve (Otput Speed) 21 Input Speed (Supply) ATM Solenoid Valve (Input Speed) 22 - - 23 - - 24 - - 25 - - 26 - - 27 [A/T] SOL...

Hyundai Santa Fe (TM) 2019-2024 Service Manual: Rear Shock Absorber. Repair procedures

Removal 1. Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported. 2. Remove the rear wheel and tire (A) from rear hub. Tightening torque : 107...