KIA Niro: Safety Plug Description and operation

Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Service Highlight / Power Relay Assembly (PRA) / 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

Circuit Diagram

Harness Connector (Interlock)

Harness Connector (Interlock)

Safety Plug Repair procedures

Safety Plug 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 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

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.

Specification

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

Cooling Fan - Components and components location

Components Cooling Fan #1 BLDC Motor Main Connector Cooling Fan #2 BLDC Motor Main Connector Removal Warning Be sure to read and follow the "General Safety Information and Caution" before doing any work re

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System Operation Specification

Initial mode System initializing time PDW-F : 500ms after IGN1+ initial D Gear + below 10 Km/h PDW-R : 500ms after IGN1+ initial R Gear PDW recognizes LID and sets the sensor ID up during initialization. PDW activates each sensor

Limitations of Remote Smart Parking Assist

In the following circumstances, Remote Smart Parking Assist performance to park or exit the vehicle may be limited, there may be a risk of collision, or Remote Smart Parking Assist may turn off. Park or exit the vehicle manually if necessary.