Kia Niro: High Voltage Battery Control System / BMS ECU Repair procedures

Removal
  

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 shut off the high voltage before doing any work related with the high voltage system(Refer to "High Voltage Shut-off Procedure"). Failure to follow the safety instructions may result in serious electrical injuries.

1.

Shut off the High Voltage circuit.

(Refer to Hybrid Control System - “High Voltage Shutoff Procedure”)

2.

Remove the high voltage front cover.

(Refer to High Voltage Battery System - "Case")

3.

Disconnect the BMS ECU Connector (A).

4.

Remove the BMS ECU (B) after loosening the mounting nuts.

BMS ECU mounting nut :

7.8 - 11.8 N·m (0.8 - 1.2 kgf·m, 5.8 - 8.7 lb·ft)

Installation
  

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 shut off the high voltage before doing any work related with the high voltage system(Refer to "High Voltage Shut-off Procedure"). Failure to follow the safety instructions may result in serious electrical injuries.

1.

Install the BMS ECU in the reverse order of removal.

BMS ECU Schematic diagrams
BMS ECU Terminal And Input/Output Signal Connector [B01-VC] (24pin) : High Voltage Battery Cell Voltage Check Connector Pin No. Descript ...

Safety Plug Specifications
Specification Item Specification Rated Voltage (V) 450 Rated Current (A) 80 Fuse Rat ...

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