KIA Niro: 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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 Inlet Temperature Sensor

 Inlet Temperature Sensor #1 (Main High Voltage) Description The inlet temperature sensor is installed on top of the high voltage battery module, and it detects the air temperature inside the battery system assembly. The inlet temperatur

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Checking brake fluid level (Kia NIRO Hybrid) Checking brake fluid level (Kia Niro EV) Operation Clean the area around the reservoir cap. Periodically check that the fluid level in the brake fluid reservoir is between MIN and MAX

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