Hyundai Sonata: Engine Control System / Injector Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System / Engine Control System / Injector Description and Operation

Description

The GDI injector is similar to a standard injector, but sprays fuel at a much higher pressure directly into the combustion chamber and has a swirl disc to get the fuel swirling as it exits the nozzle. This aids in atomization of the fuel.

The ECM controls both the feed circuits (high side) to feed voltage to the injectors and the ground circuits (low side) to energize the injectors. Also, the feed for 2 injectors comes from the same driver set. As the ignition coils are paired with cylinders (1-4 and 2-3), the injectors are also set up in pairs.

Accelerator Position Sensor (APS) Repair procedures

Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Turn the ignition switch ON. 3. Measure the output voltage of the APS 1 and 2 at C.T and W.O.T. Specification: Refer t ...

Injector Specifications

Specification ItemSpecificationCoil Resistance (?)1.5 ± 0.075 [20°C(68°F)] ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Multimedia Jack Description and Operation
Description The multimedia jack on the console upper cover is for customers who like to listen to external portable music players like the MP3 etc., through the vehicle's sound system when it is linked to this jack. The customer has this added option. In case of distortions from media conn ...

Hyundai Sonata LF 2014-2019 Service Manual: Special Service Tools
Special Service Tools Tool(Number and Name)IllustrationUse09581-11000Piston expanderSpreading the rear disc brake piston.09580 - 0U000Brake piston adjusterRemoval and installation of the rear disc brake piston.09581-2T100Piston expanderSpreading the front disc brake piston. ...