Air Conditioning Switch and Relay (Hyundai Elantra XD)

The air conditioning switch supplies battery voltage to the engine control module (ECM) when the air conditioning system is turned on. In this case, the ECM controls the idle speed modulator (ISC) and the ignition switch, and the air conditioning relay activates the electromagnetic clutch of the air conditioning compressor.

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Elantra 3: Fuel system (gasoline)

Engine control unit
Ignition switch (ST) in vehicles with manual transmission
Ignition switch (ST) and range selector (TR) in vehicles with automatic transmission
Knock Sensor (KS)
Vehicle Speed Sensor (VSS)

Fuel Vapor Capture System (EVAP)Canister Cleaning Solenoid Valve
MFI Main Relay
Ignition coil
Fuel pump
APS acceleration sensor

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