Hyundai Ioniq: Hybrid Motor Control System / Resolver Sensor. Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Hybrid Motor System / Hybrid Motor Control System / Resolver Sensor. Repair procedures

Inspection

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".)

Removal

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

Resolver Sensor. Schematic diagrams

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