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: External AMP Repair procedures

Removal 1. Disconnect the negative (-) battery terminal. 2. Open the trunk, remove the right luggage side trim. (Refer to Body - "Trunk Trim") 3. Remove the external amplifier (B) after disconneting the connector (A) and loosening the mounting nuts...

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