KIA Niro: 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
Circuit Diagram
Harness Connector and Terminal Function
Pre-Charge Resistor 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.
- Switch "OFF" the ignition and disconnect the negative (-) terminal of the auxiliary 12V battery.
- Shut off the high voltage circuit.
(Refer to Hybrid Control System - "High Voltage Shut-off Procedures")
- Remove the power relay assembly.
(Refer to High Voltage Battery System - "Power Relay Assembly")
- Insert a screwdriver or an awl (B) into the hole (A).
- Lift the pre-charge resistor (D) in the direction of arrow (C).
- Remove the pre-charge resistor (A).
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 in the reverse order of removal.
Inspection
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.
- Remove the pre-charge resistor.
(Refer to High Voltage Battery Control System - "Pre-Charge Resistor")
- Check for continuity between the terminals using an ohmmeter.
Specification : 40Ω (20ºC (68ºF))
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Battery Current Sensor
Specification
Battery Current Sensor
Specification
Description
Battery Current Sensor is integrated into the Power Relay Assembly (PRA) and
measures the current
of the high voltage battery during charging or discharging.
Installation
Battery Temperature Sensor
Specification
Air Inlet Temperature Sensor
Battery Temperature Sensor (Side of cell)
Description
Battery Temperature Sensor is installed inside the high voltage battery pack
assembly. It measures the temperature of t
Cell Monitoring Unit (CMU) Terminal And Input/Output
Signal
System Configuration
Connector Type
Terminal Function
Cell Monitoring Unit (CMU) #1 (Sub Voltage Battery Pack Assembly)
Connector (B01-A) (16Pin) : High Voltage Battery control
Connector (B01-C) (12Pin) : High Voltage Battery Cel
SEE MORE:
High Voltage Battery Module Balancing & Voltage Measurement
After removing the defective module from the HV battery pack make
carefully a visual check and then put back it into the
safety disposal box.
Warning
The cell quantity varies per module number. Check before
conducting procedure.
Starting the vehicle (Kia Niro EV)
Power button
Operation
OFF
Press the EV button in P to turn the
vehicle off.
ACC (Accessory)
Press the EV button once without
depressing the brake pedal.
The steering wheel is unlocked.
The electrical accessories ca
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