Kia Rio: 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) 1.5 [20°C(68°F)] ...

Circuit Diagram

(M/T) (A/T) ...

See also:

Oil Pump Unit (OPU) Removal
1. Remove the negative (-) battery terminal. 2. Remove the crash pad lower panel. (Refer to “Crash pad� in BD group.) ...

Rain Sensor Installation
   • In case of the windshield with reflection layer which reflects the infrared rays in ...

Inspection
1. Check signal waveform of CKPS and CMPS using a GDS. Specification: Refer to “Waveform� ...