KIA Niro: Sub High Voltage Battery - Removal
Kia Niro - First generation - (2017-2022) - Service and Repair Manual / Service Highlight / Power Relay Assembly (PRA) / 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.
- Be sure to read and follow the "High Voltage Shut-off Procedures" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
- Turn ignition switch OFF and disconnect the negative (-) battery terminal.
- Shut off the high voltage circuit.
(Refer to Hybrid Control System - "High Voltage Shut-off Procedures")
- Remove the sub high voltage battery rear cover (A) after loosening the mounting bolts.
High Voltage Battery Rear Cover mounting bolt : 7.8 - 11.8 N*m (0.8 - 1.2 kgf*m, 5.8 - 8.7 lb*ft)
- Remove the sub high voltage battery cover (A) after loosening the mounting bolts.
High Voltage Battery Cover mounting bolt : 7.8 - 11.8 N*m (0.8 - 1.2 kgf*m, 5.8 - 8.7 lb*ft)
- Disconnect the BMS connector (A).
- Remove the BMS ECU after loosening the mounting nuts (B).
BMS ECU mounting nut : 7.8 - 11.8 N*m (0.8 - 1.2 kgf*m, 5.8 - 8.7 lb*ft)
Installation
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.
- Be sure to read and follow the "High Voltage Shut-off Procedures" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
- Install the BMS ECU in the reverse order of removal.
READ NEXT:
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
High Voltage Battery Cooling
Component
Location
Cooling Fan #1
Cooling Fan #2
Main High Voltage Battery Cooling Duct (Inlet)
Main High Voltage Battery Cooling Duct (Outlet)
Sub High Voltage Battery Cooling Duct (Inlet)
Sub High Voltage Battery Cooling Duct (Ou
SEE MORE:
Washers (Kia NIRO Hybrid)
Controlling washers
Type A
Type B
Type C
Operation
Move the wiper speed control switch
to /
position.
Pull/push the lever to spray washer
fluid on the windshield.
The wipers run several times.
WARNING
Do not use the washe
Crankshaft
Check the crankshaft bearing oil clearance.
(1) To check main bearing-to-journal oil clearance, remove the lower
crankcase and lower bearings.
(2) Clean each main journal and bearing with a clean shop towel.
(3) Place one strip of plastigag
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