Pinout

MaxxECU RACE pinout

Every pin of the 48-pin C1 and 32-pin C2 connectors, with the wire colours of MaxxECU's harness. Tap a pin to see what it does.

Every pin checked against 2 MaxxECU documents
Connector C1 · 48-pinLooking into the plug's mating face, cavity letters as Molex (the plug's maker) prints them
A1A2A3A4B1B2B3B4C1C2C3C4D1D2D3D4E1E2E3E4F1F2F3F4G1G2G3G4H1H2H3H4J1J2J3J4K1K2K3K4L1L2L3L4M1M2M3M4
Connector C2 · 32-pinLooking into the plug's mating face, cavity letters as Molex (the plug's maker) prints them
A1A2A3A4B1B2B3B4C1C2C3C4D1D2D3D4E1E2E3E4F1F2F3F4G1G2G3G4H1H2H3H4

Pick any pin on the drawing or in the table to see its function, its wire colour and the documents it was checked in.

MaxxECU RACE connector C1 pinout (48-pin)

Mating connector: Molex 643203311

PinFunctionWireMaxxECU note
C1-A1GP OUT 5green
C1-A2IGNITION CYL 1blue
C1-A3IGNITION CYL 2blue
C1-A4TACH/GP OUT 8green660ohm pullup
C1-B1GP OUT 6green
C1-B2IGNITION CYL 3blue
C1-B3IGNITION CYL 4blue
C1-B4GP OUT 1green
C1-C1GP OUT 7green
C1-C2IGNITION CYL 5blue
C1-C3IGNITION CYL 6blue
C1-C4GP OUT 2green
C1-D1WBO2 HTR PIN4-
C1-D2IGNITION CYL 7blue
C1-D3IGNITION CYL 8blue
C1-D4GP OUT 3green
C1-E1CAN Hgrey
C1-E2CAN Lpink
C1-E3SHIELD GNDblack/white
C1-E4GP OUT 4green
C1-F1COOLANT SENSORblack
C1-F2AIR TEMP SENSORblack
C1-F3WBO2 COMyellow
C1-F4WBO2 VS/02 INbrown
C1-G15V SENSOR SUPPLYred(peak 0.5A, max 150mA)
C1-G2THROTTLE SENSORblack
C1-G3WBO2 IPwhite
C1-G4WBO2 RCALgreen
C1-H1SENSOR GNDbrown
C1-H2VR GNDbrown
C1-H3TRIGGERwhite
C1-H4HOME/CAMwhite
C1-J1ANALOG IN 1, TEMPblack
C1-J2ANALOG IN 2, TEMPblack
C1-J3ANALOG IN 3, 0-5Vblack
C1-J4ANALOG IN 4, 0-5Vblack
C1-K1INJECTOR CYL 1grey
C1-K2INJECTOR CYL 2grey
C1-K3DIGITAL IN 1black
C1-K4DIGITAL IN 2black
C1-L1INJECTOR CYL 8grey
C1-L2INJECTOR CYL 7grey
C1-L3INJECTOR CYL 6grey
C1-L4ENGINE GROUND-
C1-M1INJECTOR CYL 3grey
C1-M2INJECTOR CYL 4grey
C1-M3INJECTOR CYL 5grey
C1-M412V ECUred

MaxxECU RACE connector C2 pinout (32-pin)

Mating connector: Molex 0643193211

PinFunctionWireMaxxECU note
C2-A1EGT5+yellow
C2-A2EGT6+yellow
C2-A3EGT7+yellow
C2-A4EGT8+yellow
C2-B1EGT5-red
C2-B2EGT6-red
C2-B3EGT7-red
C2-B4EGT8-red
C2-C1EGT1+yellow
C2-C2EGT2+yellow
C2-C3EGT3+yellow
C2-C4EGT4+yellow
C2-D1EGT1-red
C2-D2EGT2-red
C2-D3EGT3-red
C2-D4EGT4-red
C2-E1KNOCK GNDbrown
C2-E2KNOCK 1white
C2-E3KNOCK 2white
C2-E4ANALOG IN 6 (0-5V)black
C2-F1ANALOG IN 7 (0-5V)black
C2-F2ANALOG IN 8 (0-5V)black
C2-F3DIGITAL/VR IN 4black
C2-F4DIGITAL/VR IN 5black
C2-G1GP OUT 15 (12V)-
C2-G2GP OUT 16 (12V)-
C2-G3ANALOG IN 5 (0-5V)black
C2-G4ENGINE GROUND 2brown
C2-H1MOTOR 2+red
C2-H2MOTOR 1-red
C2-H3MOTOR 2-red
C2-H4MOTOR 1+red

MaxxECU RACE pins at a glance

Which pins are CAN on the MaxxECU RACE?
CAN H: pin C1-E1 (grey). CAN L: pin C1-E2 (pink).
Which pins are the crank and cam inputs on the MaxxECU RACE?
VR GND: pin C1-H2 (brown). TRIGGER: pin C1-H3 (white). HOME/CAM: pin C1-H4 (white).
Which pins are the injector outputs on the MaxxECU RACE?
INJECTOR CYL 1: pin C1-K1 (grey). INJECTOR CYL 2: pin C1-K2 (grey). INJECTOR CYL 8: pin C1-L1 (grey). INJECTOR CYL 7: pin C1-L2 (grey). INJECTOR CYL 6: pin C1-L3 (grey). INJECTOR CYL 3: pin C1-M1 (grey). INJECTOR CYL 4: pin C1-M2 (grey). INJECTOR CYL 5: pin C1-M3 (grey).
Which pins are the ignition outputs on the MaxxECU RACE?
IGNITION CYL 1: pin C1-A2 (blue). IGNITION CYL 2: pin C1-A3 (blue). IGNITION CYL 3: pin C1-B2 (blue). IGNITION CYL 4: pin C1-B3 (blue). IGNITION CYL 5: pin C1-C2 (blue). IGNITION CYL 6: pin C1-C3 (blue). IGNITION CYL 7: pin C1-D2 (blue). IGNITION CYL 8: pin C1-D3 (blue).
Which pins are ground on the MaxxECU RACE?
SENSOR GND: pin C1-H1 (brown). ENGINE GROUND: pin C1-L4. KNOCK GND: pin C2-E1 (brown). ENGINE GROUND 2: pin C2-G4 (brown).
Which pins power the MaxxECU RACE?
12V ECU: pin C1-M4 (red).
Which pins are the sensor supplies on the MaxxECU RACE?
5V SENSOR SUPPLY: pin C1-G1 (red).
Which pins are the wideband sensor connections on the MaxxECU RACE?
WBO2 HTR PIN4: pin C1-D1. WBO2 COM: pin C1-F3 (yellow). WBO2 VS/02 IN: pin C1-F4 (brown). WBO2 IP: pin C1-G3 (white). WBO2 RCAL: pin C1-G4 (green).

MaxxECU RACE pinout sheet

A printable sheet with the connector drawings and every pin, made from the checked data on this page.

Download PDFDownload diagram (PNG)
MaxxECU RACE pinout diagram with wire colours

Where this comes from

Only MaxxECU's own documents. Pin names and notes are written exactly as MaxxECU writes them.

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.

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