Kia Cee'd: 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 ± 5%[20°C(68°F)] ...

Injector Schematic diagrams
Circuit Diagram ...

Other information:

Kia Cee'd JD Service Manual: Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Open the tailgate and remove the tailgate trim. (Refer to Body - "Tailgate Trim") 3. Disconnect the back view camera connector ...

Kia Cee'd JD Service Manual: Control Cable Repair procedures
Removal 1. Move the shift lever to 4th gear. 2. Remove the air duct and the air cleaner assembly. (Refer to Engine Mechanical System - "Air Cleaner") 3. Remove the battery and battery tr ...

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