Hyundai Santa Fe (TM): Evaporative Emission Control System / Description and operation

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Emission Control System / Evaporative Emission Control System / Description and operation

Description
Evaporative Emission Control System prevents fuel vapor stored in fuel tank from vaporizing into the atmosphere. When the fuel evaporates in the fuel tank, the vapor passes through vent hoses or tubes to the canister filled with charcoal and the canister temporarily holds the vapor in the charcoal.
If ECM determines to draw the gathered vapor into the combustion chambers during certain operating conditions, it will use vacuum in intake manifold to move it.

    Schematic Diagram Canister Canister is filled with charcoal and absorbs evaporated vapor in fuel tank. The gathered fuel vapor in canister is drawn into the intake manifold by the ECM/PCM when appropriate conditions are set.

    Other information:

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Evaporator Core. Repair procedures

    Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater and blower assembly. (Refer to Heater - "Heater Unit") 3. Remove the heater core.

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Power Mosfet (DATC). Repair procedures

    Inspection 1. Turn the ignition switch ON. 2. Manually operate the control switch and measure the voltage of the blower motor. 3. Select the control switch to raise the voltage until high speed.

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