Hyundai Kona: Engine Control System / Injector Troubleshooting

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) 2018-2025 Service Manual: Fuel Sender Repair procedures
Removal 1. Remove the fuel pump. (Refer to Fuel Delivery System - "Fuel Pump") 2. Disconnect the fuel sender connector (B). 3. Press the fixing hook (A) with a driver and then remove ...

Hyundai Kona (OS) 2018-2025 Service Manual: Hood Insulator Pad Repair procedures
Replacement 1. Using a clip remover, remove the clips and then the hood insulator pad (A).    • Be careful not to scratc ...