KIA Niro: Main High/ Sub High Voltage Battery
Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Service Highlight / Power Relay Assembly (PRA) / Main High/ Sub High Voltage Battery
Main High Voltage Battery
Component Location
- Power Relay Assembly (PRA)
- Cell Monitoring Unit (CMU)
- Battery Temperature Sensor
- Runaway Arresting Device (RAD)
Warning
Main Relays (Positive, Negative), Pre-Charge Relay, Pre-Charge Resistor, and Battery Current Sensor are integrated into the PRA.
Sub High Voltage Battery
- BMS ECU
- Safety Plug
- Cell Monitoring Unit (CMU)
- Main Fuse
- Runaway Arresting Device (RAD)
- Battery Temperature Sensor
Warning
Main Relays (Positive, Negative), Pre-Charge Relay, Pre-Charge Resistor, and Battery Current Sensor are integrated into the PRA.
High Voltage Battery Control System / Schematic Diagrams
Schematic Diagram
Troubleshooting Flow
BMS ECU Terminal and Input/Output Signal
Terminal Funxtion
Connector (B11-1A)
Connector (B11-1B)
Connector (B11-2A)
Connector (B11-2B)
READ NEXT:
Sub High Voltage Battery - 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
injuries.
Safety Plug Description and operation
Description
Safety Plug is installed on the rear side of the high voltage battery and it
can mechanically shut the
high voltage circuit off when servicing the high voltage system. (i.e. High
Voltage Battery, Power
Relay Assembly, HPCU, BMS ECU
The Power Relay Assembly
Description
The Power Relay Assembly (PRA) consists of the positive and negative main
relays, pre-charge relay, pre-charge resistor and
battery current sensor. It is located inside the battery pack assembly and
controls the high voltage power c
SEE MORE:
Memory Power Seat Unit
Memory power seat unit Components and components location
Connector Pin Information
Memory power seat unit Repair procedures
Removal
Before removing the driver side seat assembly, pull it upward to the
maximum by pushing the fro
Cooling Fan Control Module (PWM) | Radiator
Disconnect the battery negative terminal.
Remove the air duct.
(Refer to Intake and Exhaust System - "Air Cleaner")
Disconnect the cooling fan control module (PWM) connector (A) and cooling fan motor
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