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 Service Manual: General information
Basic Service Symbols There are five primary symbols used to complement illustrations. These symbols indicate the part to apply such materials during service.   Symbol Meaning Do not reuse the part. Replace a new o ...

Kia Cee'd JD Service Manual: Components and components location
Component Location   1. EMS box assembly 2. Cooling fan(Low) relay 3. Cooling fan(High) relay 4. ESS relay 5. Blower relay 6. Rear defogger relay 7. HAC relay 8. SSB4(IG2) relay 9. Front wiper relay 10. SSB3(IG1) relay ...