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

C..

Motor Temperature Sensor. Description and operation

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

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: Seat Heater Switch. Schematic diagrams

C..

Hyundai Ioniq (AE) 2017-2025 Service Manual: Main Crash Pad Assembly. Repair procedures

Replacement • When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components. • Use a plastic panel removal tool to remove interior trim pieces without marring the surface...