Hyundai Ioniq (AE): Hybrid Control System / HCU (Hybrid Control Unit). Repair procedures

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Hybrid Control System / Hybrid Control System / HCU (Hybrid Control Unit). Repair procedures

Removal
   
•
Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
1.
Refer to "HPCU".
   
•
The HCU is integrated into the HPCU that can’t be disassembled. So refer to "HPCU" for the removal or installation procedure of the HCU.
Installation
   
•
Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
1.
Refer to "HPCU".
   
•
The HCU is integrated into the HPCU that can’t be disassembled. So refer to "HPCU" for the removal or installation procedure of the HCU.
2.
Perform the clutch pressure sensor calibration.
(Refer to "Clutch Pressure Sensor")

    HCU Terminal and Input / Output SignalTerminal FunctionConnector [C133-S] Pin No Description Connected to 1HCU GroundChassis ground2HCU GroundChassis ground3HCU GroundChassis ground4Battery power (B+)Battery5Battery power (B+)Battery6Battery power (B+)Battery7-　8-　9-　10-　11-　12-　13-　14-　15Brake Switch 2 signal inputBrake Switch (NC, IG1)16Brake Switch 1 signal inputBrake Switch (NO, B+)17-　18-　19-　20-　21-　22-　23-　24-　25-　26-　27-　28-　29-　30-　31-32-33-34-　35-　36-　37-　38Start signal inputSmart Key Unit39-　40-　41-　42-　43-　44-　45-　46-　47-　48-　49-　50-　51-　52-　53-　54-　55-　56-　57-　58-　59-　60-　61-　62-　63-　64-　65-　66-　67-　68-　69-　70-　71-　72-　73IGN signal inputSmart Key Unit74-　75-　76-　77-　78Powertrain CAN [High] signal inputOther control modules79Powertrain CAN [Low] signal inputOther control modules80-　81Hybrid CAN [High] signal inputOther control modules82Hybrid CAN [Low] signal inputOther control modules83-　84-　85-　86-　87-　88-　89-　90-　91-　92-　93-　94-　Input/Output signalConnector [C133-S] Pin no Description Condition Type Level 1HCU GroundAlwaysDC VoltageMax.

    DescriptionThe Brake Switch is installed on the brake pedal and linked with the HCU and stop lamp. It sensors the status of the brake pedal (Release, Push) and transmits the signal to the HCU.

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Repair procedures

    Service Point Target Auto Calibration (SPTAC)When you need calibration :– Front view camera is removed and mounted– Replace front view camera with a new one – Windshield glass changed– Front view camera coupler of the windshield glass is deformedService Point T

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: General safety information and caution

    General Safety Information and CautionBe careful of the following precautions when driving the vehicle using the smart cruise control system.    â€¢ The smart cruise control system may have limits in detecting distance to the vehicle ahead due to road and traffic conditions.

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