Hyundai Sonata: Engine Control System / Injector Troubleshooting

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System / Engine Control System / Injector Troubleshooting

Signal Waveform

The three waveforms below are taken from the #1 and #4 injectors. The top waveform is from the high side (feed side) of the #1 and #4 injectors, while the middle waveform is from the low side (ground side) of the #1 injector and the bottom waveform is from the low side of the #4 injector.

The middle waveform is the same as the top waveform because there is no ground for the circuit. With no current flowing in the circuit, the #1 injector is not energized and fuel does not flow.

The bottom waveform shows that ground is supplied and there is a voltage drop across the #4 injector. With current flowing in the circuit, the #4 injector is energized and fuel flows.

Injector Specifications

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

Injector Schematic Diagrams

Circuit Diagram ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Purge Control Solenoid Valve (PCSV) Specifications
Specification ItemSpecificationCoil Resistance (?)22.0 ~ 26.0 [20°C(68°F)] ...

Hyundai Sonata LF 2014-2019 Owners Manual: Side View Mirrors
Be sure to adjust mirror angles before driving. Your vehicle is equipped with both left-hand and right-hand side view mirrors. The mirrors can be adjusted remotely with the remote switch. The mirror heads can be folded to prevent damage during an automatic car wash or when passing through a narr ...