Hyundai Ioniq: Hybrid Motor Control System / Resolver Sensor. Repair procedures
1. | Check the resolver sensor resistance. [Hybrid drive motor] Measuring equipment: Multimeter
Category
| Inspection area
| Inspection criteria
| Remarks
| Resistance (Resolver sensor)
| Pin 1 - 5
| 11.7 Ω ± 10% (10.5 - 12.9 Ω)
| Based on ambient temperature (20°C)
| Pin 2 - 6
| 32 Ω ± 10% (28.8 - 35.2 Ω)
| Pin 3 - 7
| 32 Ω ± 10% (28.8 - 35.2 Ω)
|

[Hybrid starter generator (HSG)] Measuring equipment: Multimeter
Category
| Inspection area
| Inspection criteria
| Remarks
| Resistance (Resolver sensor)
| Pin 1 - 6
| 15.8 ± 2Ω
| Based on ambient temperature (23°C)
| Pin 2 - 7
| 28.2 ± 2Ω
| Pin 3 - 8
| 28.2 ± 2Ω
|

|
2. | If you need to replace the resolver sensor, replace the HSG assembly. (Refer to Hybrid Motor Assembly - "Hybrid Starter Generator".) |
You need to perform resolver compensation whenever the engine, HPCU (inverter), drive motor, or starter generator (HSG) is replaced, removed, or reinstalled. Perform compensation according to the GDS motor/HSG resolver compensation procedure shown below. |
GDS Motor / HSG Resolver Compensation Procedure

Description•
Motor temperature affects the motor power significantly.•
If the motor overheats, its main components, including permanent magnet, stator coil, etc...
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