Kia Cee'd: 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 ± 5％[20°C(68°F)] ...

Injector Schematic diagrams

Circuit Diagram ...

Other information:

Kia Cee'd JD Owners Manual: Owner’s responsibility
✽ NOTICE Maintenance Service and Record Retention are the owner's responsibility. We recommend in general that you have your vehicle serviced by an authorized Kia dealer. You should retain documents that show proper maintenance has been performed on your vehicle in accordance with th ...

Kia Cee'd JD Service Manual: Engine Control Module (ECM) Schematic diagrams
ECM (Engine Control Module) ECM Harness Connector ECM Terminal Function Connector [C200-A]   Pin No. Description Connected to 1 Injector (Cylinder #3) [High] control output ...