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: IMS Power Seat Control Repair procedures
Inspection 1. Disconnect the IMS control switch connector. 2. With the power IMS control switch in each position, make sure that continuity exists between the terminals below. If continuity is not as specified, replace ...

Kia Cee'd JD Service Manual: Components and components location
Components   1. LDWS ON/OFF switch 2. Instrument cluster 3. LDWS unit ...

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