Kia Niro: High Voltage Battery System / Power Relay Assembly (PRA) Description and operation
| 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 circuit between the high voltage battery and inverter by the control signal of BMS ECU.
|
1. High Voltage Power Terminal (-) 2. High Voltage Power Terminal (+) 3. Battery Current Sensor 4. Inverter Power Terminal (-) 5. Inverter Power Terminal (+) 6. Pre-Charge Resistor |
7. Main Relay (+) 8. Pre-Charge Relay 9. Main Relay (-) 10. Power Relay Assembly Connector (Battery current sensor signal input) 11. Power Relay Assembly Connector (Main relay control) |
| [PRA Operation Sequence] |
Power Relay Assembly (PRA) Specifications
Specification
Power Relay Assembly
(PRA)
Item
Specification
Rated Voltage (V)
240
Rated Current (A)
...
Power Relay Assembly (PRA) Repair procedures
Removal
•
Be sure to read and follow the “General Safety Information and
Caution” ...
Other information:
Kia Niro 2017 (DE HEV) Service Manual: Hybrid Control Unit (HCU) Schematic diagrams
HCU Terminal And Input/Output
Signal
Terminal Function
Connector [C133-S]
Pin No.
Description
Connected to
1
HCU ground
Chassis ground
2
HCU ground
...
Kia Niro 2017 (DE HEV) Service Manual: Rear Washer Switch Repair procedures
Inspection
Multifunction Switch
Inspection
1.
Check for continuity between the terminals in each switch position as
shown below.
[Left Handle
Drive]
Switch
Switch position
Switch terminal
...
