MaxxECU GEN2 RACE pinout
ecurecovery.com/pinouts/maxxecu/gen2-race · Every pin checked against 2 MaxxECU documents · data checked 2026-11-01
Pinout
MaxxECU GEN2 RACE pinout
Every pin of the 34-pin MX1, 34-pin MX2, 34-pin MX3, and 34-pin MX4 connectors, with the wire colours of MaxxECU's harness. Tap a pin to see what it does.
Every pin checked against 2 MaxxECU documentsPick any pin on the drawing or in the table to see its function, its wire colour and the documents it was checked in.
MaxxECU GEN2 RACE connector MX1 pinout (34-pin)
Mating connector: Superseal 1.0, key MX1
| Pin | Function | Wire | MaxxECU note |
|---|---|---|---|
| MX1-1 | IGNITION 1 | blue | |
| MX1-2 | IGNITION 2 | blue | |
| MX1-3 | IGNITION 3 | blue | |
| MX1-4 | IGNITION 4 | blue | |
| MX1-5 | GP OUT 1 (GND) | green | |
| MX1-6 | GP OUT 2 (GND) | green | |
| MX1-7 | GP OUT 3 (GND) | green | |
| MX1-8 | GP OUT 4 (GND) | green | |
| MX1-9 | ENGINE GND | brown | To engine cylinder head. |
| MX1-10 | DIGITAL/VR 1 (PULSE) SIGNAL + | white | |
| MX1-11 | DIGITAL/VR 1 (PULSE) SIGNAL - | brown | |
| MX1-12 | DIGITAL/VR 1 (PULSE) POWER SUPPLY | pink | |
| MX1-13 | DIGITAL/VR 1 (PULSE) SHIELD | black | |
| MX1-14 | SENSOR GND | brown | Must NOT be connected to engine GND |
| MX1-15 | CAN L | pink | |
| MX1-16 | CAN H | grey | |
| MX1-17 | GP OUT 5 / TACHO (GND) | green | |
| MX1-18 | DIGITAL/VR 2 (PULSE) SIGNAL + | white | |
| MX1-19 | DIGITAL/VR 2 (PULSE) SIGNAL - | brown | |
| MX1-20 | DIGITAL/VR 2 (PULSE) POWER SUPPLY | pink | |
| MX1-21 | DIGITAL/VR 2 (PULSE) SHIELD | black | |
| MX1-22 | 5V POWER SUPPLY | pink | |
| MX1-23 | DIGITAL/VR 3 (PULSE) SIGNAL + | purple | |
| MX1-24 | DIGITAL/VR 4 (PULSE) SIGNAL + | purple | |
| MX1-25 | 12V ECU SUPPLY 1 | red | Main ECU supply. |
| MX1-26 | AIN 1 | black | |
| MX1-27 | AIN 2 | black | |
| MX1-28 | AIN 3 | black | |
| MX1-29 | AIN 4 | black | |
| MX1-30 | AIN 5 | black | |
| MX1-31 | INJECTOR 1 | grey | |
| MX1-32 | INJECTOR 2 | grey | |
| MX1-33 | INJECTOR 3 | grey | |
| MX1-34 | INJECTOR 4 | grey |
MaxxECU GEN2 RACE connector MX2 pinout (34-pin)
Mating connector: Superseal 1.0, key MX2
| Pin | Function | Wire | MaxxECU note |
|---|---|---|---|
| MX2-1 | IGNITION 5 | blue | |
| MX2-2 | IGNITION 6 | blue | |
| MX2-3 | GP OUT 6 (GND) | green | |
| MX2-4 | AIN 6 | black | |
| MX2-5 | AIN 7 | black | |
| MX2-6 | AIN 8 | black | |
| MX2-7 | GP OUT 13 (H-BRIDGE 1) | white | |
| MX2-8 | GP OUT 14 (H-BRIDGE 1) | white | |
| MX2-9 | ENGINE GND | brown | To engine cylinder head. |
| MX2-10 | LAMBDA 1 VS | grey | |
| MX2-11 | LAMBDA 1 COM/VREF | yellow | |
| MX2-12 | LAMBDA 1 HEATER- / GP OUT 7 (GND) | green | |
| MX2-13 | AIN 9 | black | |
| MX2-14 | AIN 10 | black | |
| MX2-15 | AIN 11 | black | |
| MX2-16 | AIN 12 | black | |
| MX2-17 | AIN 13 | black | |
| MX2-18 | LAMBDA 1 RCAL | black | |
| MX2-19 | LAMBDA 1 IP | white | |
| MX2-20 | LAMBDA 1 HEATER+ (12V) | red | |
| MX2-21 | LAMBDA 1 SHIELD | black | |
| MX2-22 | AIN 14 | black | |
| MX2-23 | AIN 15 | black | |
| MX2-24 | 12V ECU SUPPLY 3 | red | Used for ignition key or to power the internal RTC |
| MX2-25 | 12V ECU SUPPLY 2 | red | Must be wired if 12V driving output exceeds 10A |
| MX2-26 | KNOCK 1 SHIELD | black | |
| MX2-27 | KNOCK 1- | brown | |
| MX2-28 | KNOCK 1+ | white | |
| MX2-29 | KNOCK 2 SHIELD | black | |
| MX2-30 | KNOCK 2- | brown | |
| MX2-31 | KNOCK 2+ | white | |
| MX2-32 | AIN 16 | black | |
| MX2-33 | INJECTOR 5 | grey | |
| MX2-34 | INJECTOR 6 | grey |
MaxxECU GEN2 RACE connector MX3 pinout (34-pin)
Mating connector: Superseal 1.0, key MX3
| Pin | Function | Wire | MaxxECU note |
|---|---|---|---|
| MX3-1 | GP OUT 15 (H-BRIDGE 2) | white | |
| MX3-2 | GP OUT 16 (H-BRIDGE 2) | white | |
| MX3-3 | IGNITION 7 | blue | |
| MX3-4 | IGNITION 8 | blue | |
| MX3-5 | IGNITION 9 | blue | |
| MX3-6 | IGNITION 10 | blue | |
| MX3-7 | IGNITION 11 | blue | |
| MX3-8 | IGNITION 12 | blue | |
| MX3-9 | ENGINE GND | brown | To engine cylinder head. |
| MX3-10 | LAMBDA 2 VS | grey | |
| MX3-11 | LAMBDA 2 VREF | yellow | |
| MX3-12 | LAMBDA 2 HEATER- / GP OUT 8 (GND) | green | |
| MX3-13 | LAMBDA 2 SHIELD | - | |
| MX3-14 | GP OUT 9 (12V) | white | |
| MX3-15 | GP OUT 10 (12V) | white | |
| MX3-16 | GP OUT 11 (12V) | white | |
| MX3-17 | GP OUT 12 (12V) | white | |
| MX3-18 | LAMBDA RCAL | black | |
| MX3-19 | LAMBDA 2 IP | white | |
| MX3-20 | LAMBDA 2 HEATER+ (12V) | red | |
| MX3-21 | AIN 17 | black | |
| MX3-22 | AIN 18 | black | |
| MX3-23 | AIN 19 | black | |
| MX3-24 | AIN 20 | black | |
| MX3-25 | AIN 21 | black | |
| MX3-26 | AIN 22 | black | |
| MX3-27 | AIN 23 | black | |
| MX3-28 | AIN 24 | black | |
| MX3-29 | INJECTOR 7 | grey | |
| MX3-30 | INJECTOR 8 | grey | |
| MX3-31 | INJECTOR 9 | grey | |
| MX3-32 | INJECTOR 10 | grey | |
| MX3-33 | INJECTOR 11 | grey | |
| MX3-34 | INJECTOR 12 | grey |
MaxxECU GEN2 RACE connector MX4 pinout (34-pin)
Mating connector: Superseal 1.0, key MX4
| Pin | Function | Wire | MaxxECU note |
|---|---|---|---|
| MX4-1 | DIGITAL/VR 5 (PULSE) SHIELD | - | |
| MX4-2 | DIGITAL/VR 5 (PULSE) SIGNAL - | brown | |
| MX4-3 | DIGITAL/VR 5 (PULSE) SIGNAL + | white | |
| MX4-4 | DIGITAL/VR 6 (PULSE) SHIELD | - | |
| MX4-5 | DIGITAL/VR 6 (PULSE) SIGNAL - | brown | |
| MX4-6 | DIGITAL/VR 6 (PULSE) SIGNAL + | white | |
| MX4-7 | DIGITAL/VR 7 (PULSE) SHIELD | - | |
| MX4-8 | DIGITAL/VR 7 (PULSE) SIGNAL - | brown | |
| MX4-9 | DIGITAL/VR 7 (PULSE) SIGNAL + | white | |
| MX4-10 | EGT 1 + | yellow | (yellow) |
| MX4-11 | EGT 2 + | yellow | (yellow) |
| MX4-12 | EGT 3 + | yellow | (yellow) |
| MX4-13 | EGT 4 + | yellow | (yellow) |
| MX4-14 | EGT 5 + | yellow | (yellow) |
| MX4-15 | EGT 6 + | yellow | (yellow) |
| MX4-16 | EGT 7 + | yellow | (yellow) |
| MX4-17 | EGT 8 + | yellow | (yellow) |
| MX4-18 | EGT 1 - | red | (red) |
| MX4-19 | EGT 2 - | red | (red) |
| MX4-20 | EGT 3 - | red | (red) |
| MX4-21 | EGT 4 - | red | (red) |
| MX4-22 | EGT 5 - | red | (red) |
| MX4-23 | EGT 6 - | red | (red) |
| MX4-24 | EGT 7- | red | (red) |
| MX4-25 | EGT 8 - | red | (red) |
| MX4-26 | DIGITAL/VR 8 (PULSE) SHIELD | - | |
| MX4-27 | DIGITAL/VR 8 (PULSE) SIGNAL - | brown | |
| MX4-28 | DIGITAL/VR 8 (PULSE) SIGNAL + | white | |
| MX4-29 | CAN 2 L | white | |
| MX4-30 | CAN 2 H | grey | |
| MX4-31 | INJECTOR 13 | grey | |
| MX4-32 | INJECTOR 14 | grey | |
| MX4-33 | INJECTOR 15 | grey | |
| MX4-34 | INJECTOR 16 | grey |
MaxxECU GEN2 RACE pins at a glance
- Which pins are CAN on the MaxxECU GEN2 RACE?
- CAN L: pin MX1-15 (pink). CAN H: pin MX1-16 (grey). CAN 2 L: pin MX4-29 (white). CAN 2 H: pin MX4-30 (grey).
- Which pins are the crank and cam inputs on the MaxxECU GEN2 RACE?
- DIGITAL/VR 1 (PULSE) SIGNAL +: pin MX1-10 (white). DIGITAL/VR 1 (PULSE) SIGNAL -: pin MX1-11 (brown). DIGITAL/VR 2 (PULSE) SIGNAL +: pin MX1-18 (white). DIGITAL/VR 2 (PULSE) SIGNAL -: pin MX1-19 (brown). DIGITAL/VR 3 (PULSE) SIGNAL +: pin MX1-23 (purple). DIGITAL/VR 4 (PULSE) SIGNAL +: pin MX1-24 (purple). DIGITAL/VR 5 (PULSE) SIGNAL -: pin MX4-2 (brown). DIGITAL/VR 5 (PULSE) SIGNAL +: pin MX4-3 (white). DIGITAL/VR 6 (PULSE) SIGNAL -: pin MX4-5 (brown). DIGITAL/VR 6 (PULSE) SIGNAL +: pin MX4-6 (white). DIGITAL/VR 7 (PULSE) SIGNAL -: pin MX4-8 (brown). DIGITAL/VR 7 (PULSE) SIGNAL +: pin MX4-9 (white). DIGITAL/VR 8 (PULSE) SIGNAL -: pin MX4-27 (brown). DIGITAL/VR 8 (PULSE) SIGNAL +: pin MX4-28 (white).
- Which pins are the injector outputs on the MaxxECU GEN2 RACE?
- INJECTOR 1: pin MX1-31 (grey). INJECTOR 2: pin MX1-32 (grey). INJECTOR 3: pin MX1-33 (grey). INJECTOR 4: pin MX1-34 (grey). INJECTOR 5: pin MX2-33 (grey). INJECTOR 6: pin MX2-34 (grey). INJECTOR 7: pin MX3-29 (grey). INJECTOR 8: pin MX3-30 (grey). INJECTOR 9: pin MX3-31 (grey). INJECTOR 10: pin MX3-32 (grey). INJECTOR 11: pin MX3-33 (grey). INJECTOR 12: pin MX3-34 (grey). INJECTOR 13: pin MX4-31 (grey). INJECTOR 14: pin MX4-32 (grey). INJECTOR 15: pin MX4-33 (grey). INJECTOR 16: pin MX4-34 (grey).
- Which pins are the ignition outputs on the MaxxECU GEN2 RACE?
- IGNITION 1: pin MX1-1 (blue). IGNITION 2: pin MX1-2 (blue). IGNITION 3: pin MX1-3 (blue). IGNITION 4: pin MX1-4 (blue). IGNITION 5: pin MX2-1 (blue). IGNITION 6: pin MX2-2 (blue). IGNITION 7: pin MX3-3 (blue). IGNITION 8: pin MX3-4 (blue). IGNITION 9: pin MX3-5 (blue). IGNITION 10: pin MX3-6 (blue). IGNITION 11: pin MX3-7 (blue). IGNITION 12: pin MX3-8 (blue).
- Which pins are ground on the MaxxECU GEN2 RACE?
- ENGINE GND: pins MX1-9, MX2-9, MX3-9 (brown). SENSOR GND: pin MX1-14 (brown).
- Which pins power the MaxxECU GEN2 RACE?
- 12V ECU SUPPLY 1: pin MX1-25 (red). 12V ECU SUPPLY 3: pin MX2-24 (red). 12V ECU SUPPLY 2: pin MX2-25 (red).
- Which pins are the sensor supplies on the MaxxECU GEN2 RACE?
- 5V POWER SUPPLY: pin MX1-22 (pink).
- Which pins are the wideband sensor connections on the MaxxECU GEN2 RACE?
- LAMBDA 1 VS: pin MX2-10 (grey). LAMBDA 1 COM/VREF: pin MX2-11 (yellow). LAMBDA 1 RCAL: pin MX2-18 (black). LAMBDA 1 IP: pin MX2-19 (white). LAMBDA 1 HEATER+ (12V): pin MX2-20 (red). LAMBDA 2 VS: pin MX3-10 (grey). LAMBDA 2 VREF: pin MX3-11 (yellow). LAMBDA RCAL: pin MX3-18 (black). LAMBDA 2 IP: pin MX3-19 (white). LAMBDA 2 HEATER+ (12V): pin MX3-20 (red).
MaxxECU GEN2 RACE pinout sheet
A printable sheet with the connector drawings and every pin, made from the checked data on this page.
Where this comes from
Only MaxxECU's own documents. Pin names and notes are written exactly as MaxxECU writes them.
MaxxECU's GEN2 pinout table (online manual)
MaxxECU GEN2 RACE quick guide and wiring (REV2)
MaxxECU GEN2 RACE quick guide and wiring (first edition)
How we checked it
- We start from MaxxECU's pinout table for this ECU.
- We read every pin again from a second MaxxECU document, the wiring diagram or the quick start guide. A script compares the two, pin by pin.
- A pin is only shown when its function and its wire colour match in both. Where a diagram has no text to read, we read the pins off the drawing itself.
- The notes are MaxxECU's own words from its pinout table.
ECU Recovery is not affiliated with MaxxECU. MaxxECU and its product names are trademarks of MaxxECU. If your harness came with its own diagram, check your wiring against it.
More MaxxECU pinouts
- MaxxECU GEN2 TRACK pinout
- MaxxECU MINI pinout
- MaxxECU STREET pinout
- MaxxECU SPORT pinout
- MaxxECU RACE pinout
- MaxxECU PRO pinout
- MaxxECU V1 pinout
- All MaxxECU pinouts →
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