Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.

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Stock ECU being replaced

MAXXECUPRO-C1-M1 INJ 3

MAXXECUPRO-C1-M2 INJ 4

MAXXECUPRO-C1-M3 INJ 5

MAXXECUPRO-C1-L3 INJ 6

MAXXECUPRO-C4-G4 GPO 26

GND

MAXXECUPRO-C1-H4 HOME

MAXXECUPRO-C1-A2 IGN 1

MAXXECUPRO-C1-A3 IGN 2

MAXXECUPRO-C1-B2 IGN 3

MAXXECUPRO-C4-G3 GPO 25

MAXXECUPRO-C1-B4 GPO 1

MAXXECUPRO-C1-C4 GPO 2

MAXXECUPRO-C1-D4 GPO 3

MAXXECUPRO-C1-E4 GPO 4

GND

0V sensor

MAXXECUPRO-C1-H3 TRIGGER

MAXXECUPRO-C3-F2 ANALOG IN 11 (0-5V)

MAXXECUPRO-C3-A2 DIN/VR 5

MAXXECUPRO-C4-F3 Knock 2

MAXXECUPRO-C4-F2 Knock 1

MAXXECUPRO-C3-C1 WBO2 2 Shield (via SP-SHD)

GND

OEM-B74

Stock ECU being replaced

1Injector 3 (#30)

2Injector 4 (#40)

3Injector 5 (#50)

4Injector 6 (#60)

5Intake air bypass VSV (VSV1)

9ETCS-i ground (ME01)

10Cam position (G2)

11Ignition 1 (IGT, cyl 1&6)

12Ignition 2 (IGT2, cyl 5&2)

13Ignition 3 (IGT3, cyl 3&4)

15Wastegate VSV (PMC)

17VVT-i OCV - (OCV-)

18VVT-i OCV + (OCV+)

19ETCS-i clutch - (CL-)

20ETCS-i clutch + (CL+)

21Power ground (E01)

22Crank/cam sensor return (NE-)

23Crank position (NE+)

24Neutral/park switch (NSW)

25Igniter verification (IGF)

27Knock sensor 2 (KNK2, rear)

28Knock sensor 1 (KNK1, front)

30ETCS-i motor shield (GEO1)

31Power ground (E02)

5V ref

MAXXECUPRO-C4-H1 GPO 27

MAXXECUPRO-C1-D1 WBO2 Heater-

MAXXECUPRO-C1-K1 INJ 1

MAXXECUPRO-C1-K2 INJ 2

MAXXECUPRO-C4-H2 GPO 28

MAXXECUPRO-C3-F3 ANALOG IN 12 (0-5V)

MAXXECUPRO-C1-J3 AIN 3 (0-5V)

MAXXECUPRO-C3-D2 ANALOG IN 7 (0-5V)

MAXXECUPRO-C3-D3 ANALOG IN 8 (0-5V)

MAXXECUPRO-C1-F1 CLT

MAXXECUPRO-C1-G2 TPS/AIN

MAXXECUPRO-C3-C3 ANALOG IN 5 (0-5V)

GND

0V sensor

MAXXECUPRO-C3-E3 ANALOG IN 10 (0-5V)

MAXXECUPRO-C3-E2 ANALOG IN 9 (0-5V)

MAXXECUPRO-C1-F2 IAT

MAXXECUPRO-C1-J4 AIN 4 (0-5V)

MAXXECUPRO-C3-D1 ANALOG IN 6 (0-5V)

OEM-B75

Stock ECU being replaced

2Sensor power (VC)

3Exhaust gas control VSV (VSV2)

4O2 sensor heater (HT)

5Injector 1 (#10)

6Injector 2 (#20)

7EVAP purge VSV (PRG)

8Main oil pressure switch (MOPS)

9Manifold pressure (PIM)

10Mass air flow (VG)

12O2 sensor (OX)

14Coolant temperature (THW)

15Accelerator pedal 1 (VPA)

16Accelerator pedal 2 (VPA2)

17Power ground (E1)

18Sensor ground (E2)

19MAF ground (EVG)

20A/T 2nd-gear indicator (2)

21A/T 1st-gear indicator (L)

22Intake air temperature (THA)

23Throttle position 1 (VTA)

24Throttle position 2 (VTA2)

MAXXECUPRO-C1-C1 GPO 7

MAXXECUPRO-C1-A4 GPO 8/TACHO

MAXXECUPRO-C4-G1 GPO 23

MAXXECUPRO-C3-A4 DIN 7 (SWITCH)

MAXXECUPRO-C3-A1 DIN/VR 4

MAXXECUPRO-C4-G2 GPO 24

MAXXECUPRO-C3-K2 INJECTOR OUT 9

MAXXECUPRO-C3-K1 INJECTOR OUT 10

MAXXECUPRO-C3-L1 INJECTOR OUT 11

MAXXECUPRO-C3-A3 DIN 6 (SWITCH)

MAXXECUPRO-C1-K4 DIN/VR 2

MAXXECUPRO-C4-H3 GPO 29

MAXXECUPRO-C4-H4 GPO 30

MAXXECUPRO-C3-E1 GPO 10/WBO2 2 HTR

MAXXECUPRO-C1-L2 INJ 7

MAXXECUPRO-C1-L1 INJ 8

MAXXECUPRO-C1-J1 AIN 1 (temperature)

OEM-B76

Stock ECU being replaced

1A/T shift solenoid 1 (S1)

2A/T shift solenoid 2 (S2)

3A/T shift solenoid 3 (S3)

4OD direct-clutch speed (NCO+)

5No.2 speed sensor (SP2+)

6A/T shift solenoid 4 (S4)

7A/T lock-up solenoid + (SLU+)

8A/T accumulator solenoid + (SLN+)

9A/T line-pressure solenoid + (SLT+)

10OD direct-clutch speed (NCO-)

11No.2 speed sensor return (SP2-)

12Exhaust bypass VSV (VSV3)

13A/T lock-up solenoid - (SLU-)

14A/T accumulator solenoid - (SLN-)

15A/T line-pressure solenoid - (SLT-)

16Fuel pressure-up VSV (FPU)

17A/T oil temperature (OIL)

MAXXECUPRO-C4-C2 AIN 13 (0-5V)

MAXXECUPRO-C4-B3 AIN 16 (0-5V)

MAXXECUPRO-C1-A1 GPO 5

MAXXECUPRO-C4-C1 AIN 14 (0-5V)

MAXXECUPRO-C4-B4 AIN 15 (0-5V)

MAXXECUPRO-C4-D3 DIN 8 (switch)

MAXXECUPRO-C4-D4 DIN 9 (switch)

MAXXECUPRO-C4-B2 AIN 17 (0-5V)

MAXXECUPRO-C1-K3 DIN/VR 1

MAXXECUPRO-C4-B1 AIN 18 (0-5V)

MAXXECUPRO-C4-E1 DIN 10 (switch)

OEM-B77

Stock ECU being replaced

1A/C request (AC)

2Starter signal (STA)

13A/C clutch relay (ACMG)

14A/T shift down (SFTD)

16A/T reverse indicator (R)

18Rear right wheel speed (RRO)

19Rear left wheel speed (RLO)

21ABS active (ABS)

25No.1 speed sensor (SPD)

26Electrical load sense (ELS)

27Road speed (RSPD)

MAXXECUPRO-C3-M1 INJECTOR OUT 12

MAXXECUPRO-C4-E2 DIN 11 (switch)

MAXXECUPRO-C3-H1 INJECTOR OUT 13

MAXXECUPRO-C3-G1 INJECTOR OUT 14

ETCS-i power (+BM)

EFI main relay power (+B2)

MAXXECUPRO-C3-K3 KEY IN 12V

MAXXECUPRO-C1-B1 GPO 6

EFI main relay power (+B)

0V sensor

OEM-B78

Stock ECU being replaced

2TRAC snow-mode light (SNOW)

4Fuel pump diagnostic (DI)

5Fuel pump control (FPC)

6Check-engine light (W)

7ETCS-i power (+BM)

8EFI main relay power (+B2)

9Ignition switch (IGSW)

10EFI main relay control (M-REL)

16EFI main relay power (+B)

22Switch ground (EC)

MAXXECUPRO-C3-F1 INJECTOR OUT 15

MAXXECUPRO-C3-J1 INJECTOR OUT 16

OEM-B79

Stock ECU being replaced

1TRAC enable light (IND)

14TRAC active light (CIND)

MAXXECUPRO

MAXXECUPRO-C1

MAXXECUPRO

A1GPO 5

A2IGN 1

A3IGN 2

A4GPO 8/TACHO

B1GPO 6

B2IGN 3

B4GPO 1

C1GPO 7

C4GPO 2

D1WBO2 Heater-

D4GPO 3

E4GPO 4

F1CLT

F2IAT

G1+5V sensor supply

G2TPS/AIN

H1Sensor GND

H2Trigger GND

H3TRIGGER

H4HOME

J1AIN 1 (temperature)

J3AIN 3 (0-5V)

J4AIN 4 (0-5V)

K1INJ 1

K2INJ 2

K3DIN/VR 1

K4DIN/VR 2

L1INJ 8

L2INJ 7

L3INJ 6

L4Engine GND

M1INJ 3

M2INJ 4

M3INJ 5

M4+12V ECU power supply

OEM-B77-13 A/C clutch relay (ACMG)

OEM-B74-11 Ignition 1 (IGT, cyl 1&6)

OEM-B74-12 Ignition 2 (IGT2, cyl 5&2)

OEM-B76-2 A/T shift solenoid 2 (S2)

OEM-B78-10 EFI main relay control (M-REL)

OEM-B74-13 Ignition 3 (IGT3, cyl 3&4)

OEM-B74-17 VVT-i OCV - (OCV-)

OEM-B76-1 A/T shift solenoid 1 (S1)

OEM-B74-18 VVT-i OCV + (OCV+)

OEM-B75-4 O2 sensor heater (HT)

OEM-B74-19 ETCS-i clutch - (CL-)

OEM-B74-20 ETCS-i clutch + (CL+)

OEM-B75-14 Coolant temperature (THW)

OEM-B75-22 Intake air temperature (THA)

5V ref

OEM-B75-15 Accelerator pedal 1 (VPA)

0V sensor

OEM-B74-23 Crank position (NE+)

OEM-B74-10 Cam position (G2)

OEM-B76-17 A/T oil temperature (OIL)

OEM-B75-9 Manifold pressure (PIM)

OEM-B75-23 Throttle position 1 (VTA)

OEM-B75-5 Injector 1 (#10)

OEM-B75-6 Injector 2 (#20)

OEM-B77-25 No.1 speed sensor (SPD)

OEM-B76-11 No.2 speed sensor return (SP2-)

OEM-B76-16 Fuel pressure-up VSV (FPU)

OEM-B76-15 A/T line-pressure solenoid - (SLT-)

OEM-B74-4 Injector 6 (#60)

GND

OEM-B74-1 Injector 3 (#30)

OEM-B74-2 Injector 4 (#40)

OEM-B74-3 Injector 5 (#50)

+12V ECU power supply

MAXXECUPRO-C2

MAXXECUPRO

H1Engine ground 3

H2Engine ground 3

H3Engine ground 3

GND

MAXXECUPRO-C3

MAXXECUPRO

A1DIN/VR 4

A2DIN/VR 5

A3DIN 6 (SWITCH)

A4DIN 7 (SWITCH)

C1WBO2 2 Shield

C3ANALOG IN 5 (0-5V)

D1ANALOG IN 6 (0-5V)

D2ANALOG IN 7 (0-5V)

D3ANALOG IN 8 (0-5V)

E1GPO 10/WBO2 2 HTR

E2ANALOG IN 9 (0-5V)

E3ANALOG IN 10 (0-5V)

F1INJECTOR OUT 15

F2ANALOG IN 11 (0-5V)

F3ANALOG IN 12 (0-5V)

G1INJECTOR OUT 14

H1INJECTOR OUT 13

J1INJECTOR OUT 16

J2SENSOR GND

J3SENSOR GND

K1INJECTOR OUT 10

K2INJECTOR OUT 9

K3KEY IN 12V

L1INJECTOR OUT 11

L4ENGINE GROUND 2

M1INJECTOR OUT 12

M412V ECU 2

OEM-B76-5 No.2 speed sensor (SP2+)

OEM-B74-25 Igniter verification (IGF)

OEM-B76-10 OD direct-clutch speed (NCO-)

OEM-B76-4 OD direct-clutch speed (NCO+)

OEM-B74-30 ETCS-i motor shield (GEO1) (via SP-SHD)

OEM-B75-16 Accelerator pedal 2 (VPA2)

OEM-B75-24 Throttle position 2 (VTA2)

OEM-B75-10 Mass air flow (VG)

OEM-B75-12 O2 sensor (OX)

OEM-B76-14 A/T accumulator solenoid - (SLN-)

OEM-B75-21 A/T 1st-gear indicator (L)

OEM-B75-20 A/T 2nd-gear indicator (2)

OEM-B79-1 TRAC enable light (IND)

OEM-B74-24 Neutral/park switch (NSW)

OEM-B75-8 Main oil pressure switch (MOPS)

OEM-B78-6 Check-engine light (W)

OEM-B78-5 Fuel pump control (FPC)

OEM-B79-14 TRAC active light (CIND)

0V sensor

OEM-B76-8 A/T accumulator solenoid + (SLN+)

OEM-B76-7 A/T lock-up solenoid + (SLU+)

OEM-B78-9 Ignition switch (IGSW)

OEM-B76-9 A/T line-pressure solenoid + (SLT+)

GND

OEM-B78-2 TRAC snow-mode light (SNOW)

12V ECU 2

MAXXECUPRO-C4

MAXXECUPRO

B1AIN 18 (0-5V)

B2AIN 17 (0-5V)

B3AIN 16 (0-5V)

B4AIN 15 (0-5V)

C1AIN 14 (0-5V)

C2AIN 13 (0-5V)

D3DIN 8 (switch)

D4DIN 9 (switch)

E1DIN 10 (switch)

E2DIN 11 (switch)

F2Knock 1

F3Knock 2

G1GPO 23

G2GPO 24

G3GPO 25

G4GPO 26

H1GPO 27

H2GPO 28

H3GPO 29

H4GPO 30

OEM-B77-26 Electrical load sense (ELS)

OEM-B77-21 ABS active (ABS)

OEM-B77-2 Starter signal (STA)

OEM-B77-16 A/T reverse indicator (R)

OEM-B77-14 A/T shift down (SFTD)

OEM-B77-1 A/C request (AC)

OEM-B77-18 Rear right wheel speed (RRO)

OEM-B77-19 Rear left wheel speed (RLO)

OEM-B77-27 Road speed (RSPD)

OEM-B78-4 Fuel pump diagnostic (DI)

OEM-B74-28 Knock sensor 1 (KNK1, front)

OEM-B74-27 Knock sensor 2 (KNK2, rear)

OEM-B76-3 A/T shift solenoid 3 (S3)

OEM-B76-6 A/T shift solenoid 4 (S4)

OEM-B74-15 Wastegate VSV (PMC)

OEM-B74-5 Intake air bypass VSV (VSV1)

OEM-B75-3 Exhaust gas control VSV (VSV2)

OEM-B75-7 EVAP purge VSV (PRG)

OEM-B76-12 Exhaust bypass VSV (VSV3)

OEM-B76-13 A/T lock-up solenoid - (SLU-)

SP-GND · 10 pins

SP-SHD · 3 pins

SP-0V · 9 pins

SP-14V · 6 pins