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:

Radiator Inspection
Radiator Cap Testing 1. Remove the radiator cap, wet its seal with engine coolant, and then install it on a pressure tester. 2. Ap ...

Inspection
1. Disconnect the ignition switch connector (B) and key warning switch connector (A) from under the steering column. 2. Che ...

Antenna Coil Removal
1. Disconnect the negative (-) battery terminal. 2. Remove the steering column upper and lower shrouds (A). 3. ...