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: High Pressure Fuel Pump Repair procedures
Removal    In case of removing the high pressure fuel pump, high pressure fuel pipe, delivery pipe, and injector, there may be injury caused by leakage of the high pressure fuel. So don’t do any repair w ...

Kia Cee'd JD Service Manual: Repair procedures
Inspection Steering Wheel Play Inspection 1. Turn the steering wheel so that the front wheels can face straight ahead. 2. Measure the distance the steering wheel can be turned without moving the front wheels. ...