KIA Niro: High voltage battery system inspection guide

Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Service Highlight / High voltage battery system inspection guide

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.
  1. Carry out a visual inspection to determine whether the vehicle requires general repair or accident repair.
  2. For the general repair, perform the repair based on the repair process for that DTC code.
  3. For the car accident repair, determine the accident type before repair.

1) Electrical Accidents

  • Over-charge/discharge: Displays a battery over voltage (P1B71) code /low voltage (P1B70) code (Refer to the DTC diagnosis guide).
  • Short: Displays a high voltage short (P1B77, P1B25) codes (Refer to the DTC diagnosis guide).

2) Fire

3) Collision

3) Collision

4) Submersion

4) Submersion

Main Fuse Inspection

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 Main Fuse Inspection | Checking for Welding in the High Voltage Main Relay

Turn the ignition switch OFF and disconnect the auxiliary 12V battery negative (-) terminal. Shut off the high voltage. (Refer to Hybrid Control System - "High voltage Shut-off Procedures") Remove the center tra

 Measuring insulation resistance using an insulation tester

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

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 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

 Rheostat | Front Fog Lamps Repair procedures

Connector and Terminal Function Rheostat Repair procedures Removal Disconnect the negative (-) battery terminal. Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel") Remove the crash

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