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:

A/C Pressure Transducer Replacement
1. Disconnect the negative (-) battery terminal. 2. Recover the refrigerant with a recovery/charging station. 3. ...

Cooling Fan Disassembly
1. Remove the cooling fan (A) after loosening the screws (B) from the cooling assembly. Tightening torque: 2.7 ~ 3.2 N.m (0.28 ~ 0.3 ...

Intake Manifold Components
1. Intake manifold assembly 2. Electronic throttle body 3. Intake manifold stay 4. Intake manifold gasket ...