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Relay Box (Engine Compartment) Repair procedures
Relay Box (Passenger Compartment) Description and OperationHyundai Elantra AD (2016-2020) Service Manual: Smart Key Unit Components and Components Location
Components (1)
NoConnector AConnector BConnector C1BAT (+)_SignalDriver's door antenna_GND-2BAT (+)_PowerDriver's door antenna_Power-3IGN 1--4IGN 2_Relay outputB-CAN (High)SSB LED (OFF)5IGN 1_Relay outputB-CAN (Low)SSB LED (IGN)6Assist door antenna_GNDWheel speed sensorSSB LED (ACC)7Interior an ...
Hyundai Elantra AD (2016-2020) Service Manual: 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 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 ...