Hyundai Ioniq (AE): High Voltage Battery System / Inspection

Inspection
[Battery Pack Assembly Troubleshooting Chart]

   
•
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
Symptom
Warning Lamp
Follow-up
MIL
Service
Fuel

•
Normal
-
-
-
 
10 - 15%
•
Motor torque limite
(Acceleration delay)
-
-
ON
•
Refuel and check the SOC again
ON
-
-
•
Repair the MIL or Service Lamp related system
•
Charge the battery by starting the engine
•
Refuel if necessary
ON
ON
-
-
ON
-
On
ON
ON
5 - 10%
•
EV Mode inhibited
•
FATC Inhibited
•
LDC Inhibited
-
-
ON
•
Refuel and check the SOC again
ON
-
-
•
Repair the MIL or Service Lamp related system
•
Charge the battery by starting the engine
•
Refuel if necessary
ON
ON
-
-
ON
-
ON
ON
ON
0 - 5%
•
Impossible to start
ON
-
-
•
Repair the MIL or Service Lamp related system
•
Start the engine with GDS to charge the battery
•
Refuel if necessary
ON
ON
-
-
ON
-
ON
ON
ON
0%
ON
-
-
•
Repair the MIL or Service Lamp related system
•
If necessary, Replace Battery Pack
•
Refuel if necessary

[SOC Inspection]
1.
Connect the GDS to the Data Link Connector (DLC).
2.
Turn the ignition switch ON.
3.
Check the SOC in GDS service data.
SOC : 20% - 90%

[Battery Voltage Inspection]
1.
Connect the GDS to the Data Link Connector (DLC).
2.
Turn the ignition switch ON.
3.
Check the cell and pack voltage in GDS service data.
Cell Voltage : 2.5 - 4.3V
Pack Voltage : 180 - 300V

[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

4.
Connect the harness connectors to the BMS ECU.
5.
For checking the short circuit to ground, measure resistance between the module harness connectors and chassis ground.
Specification : 1 MΩ or higher

[Isolation Resistance Inspection]
1.
Connect the GDS to the Data Link Connector (DLC).
2.
Turn the ignition switch ON.
3.
Check the isolation resistance in GDS service data.
Isolation Resistance : Around 1.0 MΩ

    SpecificationBattery Pack Assemblyâ–· Type : LiPB (Lithium ion Polymer Battery), Pouch typeâ–· Specification[General Specification] Item Specification Remarks Number of Cells 16 Cells x 4 Modules 1 Cells = 3.

    Removal    â€¢ Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system.

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