Hyundai Ioniq Inverter Pinouts

[FerrySteve]

Very much a work in progress but hopefully of use to other members

Ioniq Pinouts Main MCU & Layout.pdf

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Ioniq Pinouts IGBT gate Board.pdf

(8.63 MiB) Downloaded 525 times

Ioniq Pinouts Powertrai Periferals.pdf

(5.97 MiB) Downloaded 492 times

[projectgus]

Hi Steve,

Thanks for posting these! FWIW, you can sign up for a Hyundai Service portal account here https://service.hyundai-motor.com/ and if you pay them 15EUR for 24 hours then you can access a lot of service info including harness diagrams and module pinouts (under the "ETM" section). The site doesn't have anything inside the EPCU, it's a black box for external repairers, so no IGBT gate driver pinout. But they do have the main EPCU pinout of the big connector.

Did you make any progress with the Ioniq inverter? I just bought a wrecked Kona that looks like it has a very similar or identical EPCU stack in it. Currently working out what my plan is for that...

[Jack Bauer]

Thank you for this and for sharing your findings.

[projectgus]

Here's the pinout list for the external EPCU connector on the Kona. I think it's the same as the Ioniq, the internal photos look very similar as well:

Using the same numbering as your diagram - rows 1-4 and columns A-Q where P & Q are the fatter wires.

The plug is FCI (Aptiv) PPI0001500

• 1A Resolver - (B)
• 1B Resolver + (R)
• 1C Resolver S4 (B)
• 1D Resolver S3 (W)
• 1E
• 1F IGPM Wake Up Input (O)
• 1G
• 1H
• 1J P-CAN High (O)
• 1K P-CAN Low (G)
• 1L CCP-CAN High (Unused) (P)
• 1N CCP-CAN Low (Unused) (Y)
• 1N
• 1O IMMO (Br/O)
• 1P
• 1Q Ground (B)

• 2A Resolver Shield (B/O)
• 2B
• 2C Resolver S2 (R)
• 2D Resolver S1 (G)
• 2E
• 2F
• 2G Cooling Fan Control PWM (Br)
• 2H Shift Select (SBW) Gear Position PWM 5V (L)
• 2J
• 2K EV Ready Backup (P/B)
• 2L Status PWM Output (Gr/O)
• 2M P-CAN MCU (High) (O)
• 2N P-CAN MCU (Low) (G)
• 2O 12V Battery Sensor (Signal) (B/O)
• 2P Ground (B)
• 2Q Ground (B)

• 3A Motor Temp Shield (B/O)
• 3B Motor Temp Signal (W)
• 3C Accel Position Sensor Signal 2 (L/O)
• 3D Accel Position Sensor Power 2 (W)
• 3E Accel Position Sensor Power 1 (B)
• 3F Accel Position Sensor Signal 1 (G/O)
• 3G
• 3H Paddle Shift Up Switch (P)
• 3J Paddle Shift Down Switch (L/O)
• 3K IGPM Power via Fuse F25 (O)
• 3L Brake Light Switch (G)
• 3M Brake Light "Test" Switch (L/O)
• 3N SCU "P" Position - TX PWM
• 3O Power - Fuse F9 (R/O)
• 3P Power - Fuse F6 (Br)
• 3Q Power - Fuse F7 (R)

• 4A
• 4B Motor Temp Ground (G)
• 4C
• 4D Accel Position Sensor GND 2 (R)
• 4E Accel Position Sensor GND 1 (R/O)
• 4F HV Interlock Signal (BR)
• 4G
• 4H Shift Select (SBW) Button Signal 5V (G/B)
• 4J
• 4K
• 4L
• 4M
• 4N SCU "P" Position - RX PWM
• 4O
• 4P Power - Fuse F7 (R)
• 4Q Power - Fuse F7 (R)

[uhi22]

Some work-in-progress: Got an Ioniq EPCU on the desk and will document what I find out here: https://github.com/uhi22/Ioniq28Investi ... ontrolUnit
Conclusions for now:
- the pinout description above from FerrySteve has inconsistency at the pin numbers of the CAN bus.
- in contrast to the Kona pin description of projectgus above, the Ioniq does not have the third CAN populated.