Kia Niro: 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 Repair procedures
Inspection 1. Switch "OFF" the ignition. 2. Disconnect the injector connector. 3. Measure resistance between t ...

Purge Control Solenoid Valve (PCSV) Specifications
Specification Item Specification Coil Resistance (Ω) 14.3 - 14.7 [20°C(68°F)] Rated Voltage (V) 13 ...

Other information:

Kia Niro (DE HEV) Owners Manual: Recognizing pedestrians
- The pedestrian is not fully captured by the camera sensor, or the pedestrian does not walk in the upright position. - The pedestrian moves very fast. - The pedestrian abruptly appears in front. - The pedestrian wears clothes in the color similar to the background. - The outside is too bright ...

Kia Niro 2017 (DE HEV) Service Manual: DC Fuse Repair procedures
Removal    • Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage system. Failure to follow the safety instr ...

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