KIA Niro: Safety Plug Description and operation
Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Hybrid Control System / Main/ Sub High Voltage Battery /  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, Hybrid Drive Motor, Inverter, HSG, LDC, Power 
Cable, etc.)
It includes a fuse in order to prevent the high voltage system from overcurrent

Circuit Diagram

Harness Connector (Interlock)

Safety Plug Repair procedures
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 the ignition switch OFF.
 - Remove the auxiliary 12V battery cover (A).
 

- Disconnect the auxiliary 12V battery negative (-) terminal.
 

- Remove the luggage board (A).
 

- Remove the safety plug cover (A) after loosening the mounting bolts.
 

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 Safety Plug in the reverse order of removal.
 
READ NEXT:
 The Power Relay Assembly
	
   Specification
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 h
   
   
 Pre-Charge Relay
	
   Specification
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 h
   
   
 Pre-Charge Resistor
	
   Specification
Description
Pre-Charge Resistor is integrated into the Power Relay Assembly (PRA). It 
protects the high voltage circuit by limiting the
current while the inverter capacitor is being charged.
PRA Operation Sequence
Cir
   
   SEE MORE:
 Heater Unit Repair procedures
	
   Replacement
Warning
When prying with a flat-tip screwdriver or a prying trim tool, wrap 
a protective tape around the related parts and the tool to
prevent damage.
	Disconnect the negative (-) battery terminal.
	Recover the refrigerant with a
   
   
 Oil Pan Repair procedures
	
   Oil Pan Components and components location
Components
	Oil pan
	Drain plug gasket
	Drain plug
	Oil screen
	Oil screen gasket
Oil Pan Repair procedures
Removal
	Remove the engine room under cover.
	(Refer to Engine and Transaxle 
   
   Categories
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