If the main fuse is blown, it must be removed as follows:
1. Turn off the engine.
2. Disconnect the negative battery cable.
3. Remove the nuts shown in the picture above.
4. Replace the fuse with a new one of the same rating.
5. Reinstall in the reverse order of removal
✽ NOTICE
The electronic system may not function correctly even when the engine room and internal fuse box's individual fuses are not disconnected. In such case the cause of the problem may be disconnection of the main fuse (BFT type), which is located inside the positive battery terminal (+) cap. Since the main fuse is designed more intricately than other parts, please visit the nearest Kia dealer and service center.
CAUTION
Visually inspect the battery cap for secure closing. If the battery cap is not securely latched, the electrical system may be damaged to due influx of moisture into the system.
Kia Niro 2017 (DE HEV) Service Manual: Hybrid Power Control Unit (HPCU) Specifications
Specification
Hybrid Power Control
Unit (HPCU)
Item
Specification
Operating Voltage (V)
204 - 275.2
Operating Frequency (Hz)
Max. 826
LDC Output Voltage (V) [Auxiliary 12V Battery] ...
Kia Niro 2017 (DE HEV) Service Manual: Heated Oxygen Sensor (HO2S) Specifications
Specification
HO2S [Bank 1/Sensor
1] (Linear)
Item
Specification
Heater Resistance (Ω)
2.5 - 4.0 [20°C(68°F)]
HO2S [Bank 1/Sensor
2] (Binary type)
Item
Specification
...