KIA Niro: Hybrid Control System / Description And Operation
The Hybrid Electric Vehicle (HEV) uses hybrid power source (Engine, Electric motor), so its fuel efficiency is relatively high and exhaust emission is very small compared to the traditional vehicle which uses only engine as power source. It consists of the engine, motor, high voltage battery and control modules.
In Electric Vehicle (EV) mode, the HEV is driven by only the electric motor, but engine supports the motor in case the vehicle needs more power (HEV Mode).
The electric motor not only drives the vehicle but also generates electric energy during regenerative braking for charging the high voltage battery.
HEV Operation Mode and Power Flow
Driver Mode
Warning Lamp
Items
- MIL Lamp
Description
- Lamp ON : Engine Management System (EMS) fault
Items
- Service Lamp
Description
- Lamp ON : Hybrid related system fault
Items
- READY Lamp
Description
After ignition START
- Lamp ON : HEV in normal condition is ready to drive (Engine may or may not start)
- Lamp OFF : HEV is not ready to drive
During driving
- Lamp ON : HEV is ready to drive
- Lamp Blinking : HEV in faulty condition (HEV in limited operating mode)
- Lamp OFF : HEV is not ready to drive
Related Control Module
HPCU (HCU)
Items
- EV MODE Lamp
Description
- Lamp ON : EV mode (Electric motor only)
- Lamp OFF : HEV mode (Engine running)
Related Control Module
HPCU (HCU)
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Hybrid Control System / Components And Components Location
HPCU (Hybrid Power Control Unit)
On-Board Charger (OBC)
Charge Port
Power Cable (HPCU↔HSG,Electronic A/C
Compressor)
Power Cable (HPCU↔Main High Voltage Battery System)
Power Cable (Main High Voltage Battery System ↔ Sub High
Hybrid Power Control Unit (HPCU) connector and high voltage cable
Hybrid Power Control Unit (HPCU) terminal And Input/Output signal
HPCU Terminal Function
Connector (C133-S) (94Pin) : HPCU signal input and control
High Voltage Cable (C133-P) (2 Pin) : HPCU↔Power Relay Assembly
Hybrid Power Control Unit (HPCU)/ Repair procedures
Removal
Warning
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 instructions may result in serious
electrical inju
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Disarmed stage
Operation
The hazard warning lights will blink
twice after the doors are unlocked.
After pressing the door unlock button,
if any door (or tailgate) is not opened
within 30 seconds, the system will be
rearmed.
Operating condition(s)
Accelerator Position Sensor (APS)
Specification
Accelerator Position Sensor (APS) Description and operation
Description
Installed on the accelerator pedal module, the Accelerator Position Sensor (APS)
detects the rotation
angle of the accelerator pedal. The APS is one o
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- KIA Niro EV, Hybrid - Second generation - (SG2) (2021-2024) - Owner's manual
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