Hyundai Sonata LF: 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...

Injector Specifications

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Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Special Service Tools

Special Service Tools Tool (Number and name)IllustrationUseCrankshaft front oil seal installer(09455-21200)Installation of the front oil sealValve stem oil seal installer(09222-2B100)Installation of the valve stem oil sealValve spring compressor and holderA : (09222-3K000)B : (09222-3K100)Removal and installation of the intake or exhaust valveCrankshaft rear oil seal installerA : (09231-H1100)B : (09231-2B200)Installation of the crankshaft rear oil sealRing gear stoppper(09231-2B100) (A)(09231-3N100) (B)Removal and installation of crankshaft pulley bolt...

Hyundai Sonata LF 2014-2019 Service Manual: Battery Components and Components Location