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.
100%
Stock ECU being replaced
5V ref
MAXXECUPRO-C3-A3 DIN 6 (SWITCH)
MAXXECUPRO-C1-K4 DIN/VR 2
MAXXECUPRO-C1-H3 TRIGGER
0V sensor
MAXXECUPRO-C1-G2 TPS/AIN
MAXXECUPRO-C1-J3 AIN 3 (0-5V)
MAXXECUPRO-C3-A1 DIN/VR 4
MAXXECUPRO-C1-H4 HOME
0V sensor
MAXXECUPRO-C1-J4 AIN 4 (0-5V)
MAXXECUPRO-C3-C3 ANALOG IN 5 (0-5V)
MAXXECUPRO-C1-F2 IAT
MAXXECUPRO-C3-A2 DIN/VR 5
0V sensor
MAXXECUPRO-C1-F1 CLT
0V sensor
OEM-C84
Stock ECU being replaced
1Sensor supply +5V (VCC)
3OD direct-clutch speed sensor (NCO-)
4No.2 speed sensor (SP2-)
5Crank position (NE)
6Crank sensor return (NE-)
7Throttle position (VTA1)
8Manifold pressure (PIM)
9No.2 speed sensor (SP2+)
10Cam position 1 (G1)
11Cam 1 return (G1-)
12TRAC throttle position (VTA2)
13O2 sensor (OX1)
14Intake air temperature (THA)
15OD direct-clutch speed sensor (NCO+)
17Cam 2 return (G2-)
20Coolant temperature (THW)
22Sensor ground (E2)
MAXXECUPRO-C3-A4 DIN 7 (SWITCH)
MAXXECUPRO-C1-B4 GPO 1
MAXXECUPRO-C4-G1 GPO 23
MAXXECUPRO-C4-G2 GPO 24
MAXXECUPRO-C4-E1 DIN 10 (switch)
MAXXECUPRO-C3-E3 ANALOG IN 10 (0-5V)
MAXXECUPRO-C4-A4 0-5V out 2
MAXXECUPRO-C4-D3 DIN 8 (switch)
MAXXECUPRO-C4-A3 0-5V out 1
MAXXECUPRO-C3-E2 ANALOG IN 9 (0-5V)
GND
OEM-C85
Stock ECU being replaced
1Slave engine speed (NEO)
2EFI main relay control (M-REL)
3Check-engine lamp (W)
4Fuel pump control (FPC)
5Diagnostic test 1 (TE1)
6Timing retard (TR)
7Slave throttle position (VTO1)
10Fuel pump diagnostic (DI)
11Slave TRAC throttle position (VTO2)
14ABS active (MT only)
16Power ground (E1)
MAXXECUPRO-C3-F2 ANALOG IN 11 (0-5V)
MAXXECUPRO-C4-B4 AIN 15 (0-5V)
MAXXECUPRO-C1-C4 GPO 2
MAXXECUPRO-C3-D3 ANALOG IN 8 (0-5V)
MAXXECUPRO-C4-E2 DIN 11 (switch)
MAXXECUPRO-C4-G3 GPO 25
MAXXECUPRO-C3-K3 KEY IN 12V
MAXXECUPRO-C3-D1 ANALOG IN 6 (0-5V)
MAXXECUPRO-C3-D2 ANALOG IN 7 (0-5V)
MAXXECUPRO-C1-K3 DIN/VR 1
MAXXECUPRO-C1-J1 AIN 1 (temperature)
MAXXECUPRO-C3-F3 ANALOG IN 12 (0-5V)
MAXXECUPRO-C4-C2 AIN 13 (0-5V)
MAXXECUPRO-C4-C1 AIN 14 (0-5V)
MAXXECUPRO-C4-B3 AIN 16 (0-5V)
EFI main relay power (+B)
EFI main relay power (+B1)
MAXXECUPRO-C4-B2 AIN 17 (0-5V)
MAXXECUPRO-C4-B1 AIN 18 (0-5V)
OEM-C86
Stock ECU being replaced
1Diagnostic test terminal (TT)
2A/T low-gear indicator (L)
5A/C clutch relay (ACMG)
6A/T overdrive disable 2 (OD2)
7A/T overdrive disable 1 (OD1)
8Cat temp warning light (EGW)
9Ignition switch (IGSW)
10A/T 2nd-gear indicator (2)
11Diagnostic test 2 (TE2)
12No.1 speed sensor (SP1)
13Cat temperature sensor (CCO)
17A/T throttle position (L3)
18A/T throttle position (L2)
19A/T throttle position (L1)
20A/C request (A/C)
22EFI main relay power (+B)
23EFI main relay power (+B1)
25Stop light switch (STP)
28Electrical load sense (ELS)
MAXXECUPRO-C1-D1 WBO2 Heater-
MAXXECUPRO-C4-F3 Knock 2
MAXXECUPRO-C4-F2 Knock 1
MAXXECUPRO-C4-H1 GPO 27
MAXXECUPRO-C1-M1 INJ 3
MAXXECUPRO-C1-K2 INJ 2
MAXXECUPRO-C1-K1 INJ 1
MAXXECUPRO-C1-D4 GPO 3
MAXXECUPRO-C4-D4 DIN 9 (switch)
MAXXECUPRO-C1-B2 IGN 3
MAXXECUPRO-C1-A3 IGN 2
MAXXECUPRO-C1-A1 GPO 5
MAXXECUPRO-C1-A4 GPO 8/TACHO
MAXXECUPRO-C1-C1 GPO 7
MAXXECUPRO-C1-B1 GPO 6
MAXXECUPRO-C1-E4 GPO 4
MAXXECUPRO-C1-A2 IGN 1
MAXXECUPRO-C1-B3 IGN 4
MAXXECUPRO-C4-G4 GPO 26
GND
MAXXECUPRO-C1-C3 IGN 6
MAXXECUPRO-C1-C2 IGN 5
GND
GND
OEM-C88
Stock ECU being replaced
3O2 heater (HT)
4Knock sensor 2 (KNK2, rear)
5Knock sensor 1 (KNK1, front)
7EVAP purge VSV
8Injector 3 (#30, cyl 2&6)
9Injector 2 (#20, cyl 3&5)
10Injector 1 (#10, cyl 1&4)
11A/T shift solenoid 1 (S1)
12Igniter feedback (IGF)
15Ignition 3 (IGT3)
16Ignition 2 (IGT2)
17A/T shift solenoid 2 (S2)
20ISC stepper coil 4 (ISCV4)
21ISC stepper coil 3 (ISCV3)
22ISC stepper coil 2 (ISCV2)
23ISC stepper coil 1 (ISCV1)
24Ignition 1 (IGT1)
26Ignition 4 (IGT4)
27A/T lock-up solenoid (S3)
28Power ground (E11)
29Ignition 6 (IGT6)
30Ignition 5 (IGT5)
33Power ground (E02)
34Power ground (E01)
MAXXECUPRO
MAXXECUPRO-C1
MAXXECUPRO
A1GPO 5
A2IGN 1
A3IGN 2
A4GPO 8/TACHO
B1GPO 6
B2IGN 3
B3IGN 4
B4GPO 1
C1GPO 7
C2IGN 5
C3IGN 6
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
L4Engine GND
M1INJ 3
M4+12V ECU power supply
OEM-C88-17 A/T shift solenoid 2 (S2)
OEM-C88-24 Ignition 1 (IGT1)
OEM-C88-16 Ignition 2 (IGT2)
OEM-C88-20 ISC stepper coil 4 (ISCV4)
OEM-C88-22 ISC stepper coil 2 (ISCV2)
OEM-C88-15 Ignition 3 (IGT3)
OEM-C88-26 Ignition 4 (IGT4)
OEM-C85-2 EFI main relay control (M-REL)
OEM-C88-21 ISC stepper coil 3 (ISCV3)
OEM-C88-30 Ignition 5 (IGT5)
OEM-C88-29 Ignition 6 (IGT6)
OEM-C86-5 A/C clutch relay (ACMG)
OEM-C88-3 O2 heater (HT)
OEM-C88-11 A/T shift solenoid 1 (S1)
OEM-C88-23 ISC stepper coil 1 (ISCV1)
OEM-C84-20 Coolant temperature (THW)
OEM-C84-14 Intake air temperature (THA)
5V ref
OEM-C84-7 Throttle position (VTA1)
0V sensor
0V sensor
OEM-C84-5 Crank position (NE)
OEM-C84-10 Cam position 1 (G1)
OEM-C86-13 Cat temperature sensor (CCO)
OEM-C84-8 Manifold pressure (PIM)
OEM-C84-12 TRAC throttle position (VTA2)
OEM-C88-10 Injector 1 (#10, cyl 1&4)
OEM-C88-9 Injector 2 (#20, cyl 3&5)
OEM-C86-12 No.1 speed sensor (SP1)
OEM-C84-4 No.2 speed sensor (SP2-)
GND
OEM-C88-8 Injector 3 (#30, cyl 2&6)
+12V ECU power supply
MAXXECUPRO-C2
MAXXECUPRO
H1Engine ground 3
H2Engine ground 3
H3Engine ground 3
GND
GND
GND
MAXXECUPRO-C3
MAXXECUPRO
A1DIN/VR 4
A2DIN/VR 5
A3DIN 6 (SWITCH)
A4DIN 7 (SWITCH)
C3ANALOG IN 5 (0-5V)
D1ANALOG IN 6 (0-5V)
D2ANALOG IN 7 (0-5V)
D3ANALOG IN 8 (0-5V)
E2ANALOG IN 9 (0-5V)
E3ANALOG IN 10 (0-5V)
F2ANALOG IN 11 (0-5V)
F3ANALOG IN 12 (0-5V)
J2SENSOR GND
J3SENSOR GND
K3KEY IN 12V
L4ENGINE GROUND 2
M412V ECU 2
OEM-C84-9 No.2 speed sensor (SP2+)
OEM-C84-15 OD direct-clutch speed sensor (NCO+)
OEM-C84-3 OD direct-clutch speed sensor (NCO-)
OEM-C85-1 Slave engine speed (NEO)
OEM-C84-13 O2 sensor (OX1)
OEM-C86-10 A/T 2nd-gear indicator (2)
OEM-C86-11 Diagnostic test 2 (TE2)
OEM-C86-6 A/T overdrive disable 2 (OD2)
OEM-C85-14 ABS active (MT only)
OEM-C85-6 Timing retard (TR)
OEM-C86-1 Diagnostic test terminal (TT)
OEM-C86-17 A/T throttle position (L3)
0V sensor
0V sensor
OEM-C86-9 Ignition switch (IGSW)
GND
12V ECU 2
MAXXECUPRO-C4
MAXXECUPRO
A30-5V out 1
A40-5V out 2
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
OEM-C85-11 Slave TRAC throttle position (VTO2)
OEM-C85-7 Slave throttle position (VTO1)
OEM-C86-28 Electrical load sense (ELS)
OEM-C86-25 Stop light switch (STP)
OEM-C86-20 A/C request (A/C)
OEM-C86-2 A/T low-gear indicator (L)
OEM-C86-19 A/T throttle position (L1)
OEM-C86-18 A/T throttle position (L2)
OEM-C85-10 Fuel pump diagnostic (DI)
OEM-C88-12 Igniter feedback (IGF)
OEM-C85-5 Diagnostic test 1 (TE1)
OEM-C86-7 A/T overdrive disable 1 (OD1)
OEM-C88-5 Knock sensor 1 (KNK1, front)
OEM-C88-4 Knock sensor 2 (KNK2, rear)
OEM-C85-3 Check-engine lamp (W)
OEM-C85-4 Fuel pump control (FPC)
OEM-C86-8 Cat temp warning light (EGW)
OEM-C88-27 A/T lock-up solenoid (S3)
OEM-C88-7 EVAP purge VSV
SP-0V · 9 pins
SP-14V · 5 pins
SP-GND · 10 pins
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.