Hyundai Kona: 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 Item Specification Coil Resistance (Ω) 1.5 ± 0.075 [20°C (68°F)] ...

Injector Schematic diagrams
Circuit Diagram Harness Connector ...

Other information:

Hyundai Kona (OS) 2018-2020 Service Manual: Instrument Cluster Schematic diagrams
Circuit Diagram [Mono type (3.5")] [Super vision type (4.2")] [Super vision type (4.2")] ...

Hyundai Kona (OS) 2018-2020 Service Manual: Muffler Components and components location
Components 1. Front muffler 2. GPF 3. Center muffler 4. Rear muffler 5. Gasket 6. Hanger ...

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