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

Kia Niro 2017 (DE HEV) Service Manual / Service Highlight / 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).

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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Kia Niro 2017 (DE HEV) Service Manual: 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, LD ...