Kia Sorento: 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.

Specification

Item Specification Coil Resistance (Ω) 1.18 ~ 1.31 [20°C(68°F)] ...

Circuit Diagram

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See also:

ATF Warmer Removal
1. Drain the coolant. (Refer to Engine Mechanical System - "Coolant") 2. Remove the air cleaner assembly and air duct. ...

Troubleshooting
Symptom Suspect Area Remedy (Refer to page) Water leaks from panorama sunroof Deteriorated roof lid weatherstrip Replace Excessive roof lid ...

Engine compartment
1. Engine coolant reservoir 2. Engine oil filler cap 3. Brake/clutch fluid reservoir 4. Air cleaner 5. Fuse box 6. Negative battery terminal 7. Positive battery terminal 8. Radiator cap 9. E ...