KIA Niro: Battery Pack Assembly Troubleshooting Chart

Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Service Highlight / High Voltage Battery System / Battery Pack Assembly Troubleshooting Chart

Inspection

Warning

Warning

  • For SOC check, refer to "SOC Inspection"
  • For voltage check, refer to "Battery Voltage Inspection"
  • For battery voltage sensing circuit, refer to "Voltage Sensing Circuit Inspection"
  • For isolation resistance check, refer to "Isolation Resistance Inspection"

SOC Level and Follow-up

SOC Inspection

SOC Inspection

  1. Connect the KDS to the Data Link Connector (DLC).
  2. Turn the ignition switch ON.
  3. Check the SOC in KDS service data.

SOC : Above 5%

Battery Voltage Inspection

Battery Voltage Inspection

  1. Connect the KDS to the Data Link Connector (DLC).
  2. Turn the ignition switch ON.
  3. Check the cell and pack voltage in KDS service data.

Cell Voltage : 2.5 - 4.2V

Pack Voltage : Above 360V

Cell volage deviation : 40 mV or less

Voltage Sensing Circuit Inspection

Voltage Sensing Circuit Inspection

  1. Shut off the high voltage circuit.

    (Refer to "High Voltage Shutoff Precedure")

  2. Remove the battery temperature sensor.

    (Refer to "Battery Temperature Sensor")

  3. Check the continuity of the wiring between the harness connectors of the module and BMS ECU.

Specification : below 1Ω

  1. Connect the harness connectors to the BMS ECU.
  2. For checking the short circuit to ground, measure resistance between the module harness connectors and chassis ground.

Specification : 1MΩ or higher

Isolation Resistance Inspection

Isolation Resistance Inspection

  1. Connect the KDS to the Data Link Connector (DLC).
  2. Turn the ignition switch ON.
  3. Check the isolation resistance in KDS service data.

Isolation Resistance : Around 1.0 MΩ

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