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.

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

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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Coolant Repair procedures

Warning Never remove the radiator cap when the engine is hot. Serious scalding could be caused by hot fluid under high pressure escaping from the radiator. Warning When pouring engine coolant, shut the relay box lid and be careful not to spil

Motor compartment fuse panel (Kia Niro EV)

Circuit (P/R Junction Block) Fuse Name/ Symbol/ Fuse Rating/ Circuit Protected MULTI FUSE-1 LDC// 150A/ Fuse (IEM, EOP, Inverter, Power Outlet) MDPS1// 80A/ MDPS Unit * MDPS is the same as EPS (Electric Power Steering)