Hyundai Ioniq: Hybrid Motor Control System / Motor Control Unit(MCU). Repair procedures
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| MCU is integrated with HPCU. Therefore, to install / remove the MCU, follow the procedure for installing / removing the HPCU. (Refer to Hybrid Control System - "HPCU (Hybrid Power Control Unit)".) |
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| You need to perform resolver compensation whenever the engine, HPCU, drive motor, or starter generator (HSG) is replaced, removed, or reinstalled. Perform compensation according to the GDS motor / HSG resolver compensation procedure shown below. |
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GDS Motor/HSG Resolver Compensation Procedure

Diagram System CircuitA high-capacity power module is applied to the two high-voltage motors.The power module consists of a high - speed switching circuit that is isolated from the IGBT and DIODE circuits...
Description•
To efficiently control the drive motor, you need to know the absolute location of a motor rotor (permanent magnet).•
Resolver detects the absolute location of the motor rotor...
Other information:
Special Service Tools
Tool Name / Number
Illustration
Description
LKA Compensator(09964-C1100)Used for compensating front view camera unitBCW Sensor Correction Tool Set(09958-3T500)Used to correct the blind-spot radar unit...
When the high voltage battery is discharged, when the 12-volt battery is discharged,
or when the fuel tank is empty, the hybrid system may not operate while driving.
When the Hybrid system does not operate, do the followings:
1. Gradually reduce the vehicle speed...
Categories
Adjust the steering wheel so it points toward your chest, not toward your face.
Make sure you can see the instrument cluster warning lights and gauges. After adjusting,
push the steering wheel both up and down to be certain it is locked in position.
Always adjust the position of the steering wheel before driving.
WARNING
NEVER adjust the steering wheel while driving. This may cause loss of vehicle
control resulting in an accident.

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