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 2017 (DE HEV) Service Manual: High voltage shut-off procedures
High Voltage Shut-off Procedures
•
Be sure to read and follow the “General Safety Information and
Caution” before doing any work related with the high voltage system.
Failure t ...
Kia Niro 2017 (DE HEV) Service Manual: Cylinder Block Repair procedures
Disassembly
•
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 i ...