Hyundai Sonata: 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: Crash Pad Lower Panel Repair procedures
Replacement     • Put on gloves to protect your hands.     • When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage. • Us ...

Hyundai Sonata LF 2014-2019 Service Manual: Front Mud Guard Repair procedures
Replacement     • When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage. • Take care not to scratch the body surface. 1. After loosening the ...

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