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: Front Seat Assembly Repair procedures
Replacement • When folding the seatback forward in state that headrest and seat is upper and seat is moved forward, be careful not to touch the components such as sunvisor. 1. Remove the front anchor seat belt. (Refer to Restraint - "EFD (Emergency Fastening ...

Hyundai Sonata LF 2014-2019 Service Manual: AVN Remote Controller (Sonata Sports) Repair procedures
Inspection 1. Check for resistance between terminals in each switch position (LH). [LH : Audio + Hands free] SwitchConnector TerminalResistance(±5%)SEEK Up4-5430 ?SEEK Down1.11 k?MUTE3.11 k?Volume (+)4.61 k?Volume (-)6.81 k?Voice10.71 k?SEND18.91 k?END40.91 k? 2. Check for resistance be ...