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
MAXXECUPRO-C3-K3 KEY IN 12V
MAXXECUPRO-C4-D3 DIN 8 (switch)
MAXXECUPRO-C1-G2 TPS/AIN
MAXXECUPRO-C1-F1 CLT
MAXXECUPRO-C1-J4 AIN 4 (0-5V)
MAXXECUPRO-C1-J1 AIN 1 (temperature)
MAXXECUPRO-C3-A2 DIN/VR 5
5V ref
EFI main relay (B+)
EFI main relay (B1+)
MAXXECUPRO-C3-A4 DIN 7 (SWITCH)
MAXXECUPRO-C1-F2 IAT
MAXXECUPRO-C1-J3 AIN 3 (0-5V)
0V sensor
MAXXECUPRO-C3-A1 DIN/VR 4
MAXXECUPRO-C3-A3 DIN 6 (SWITCH)
GND
OEM-A
Stock ECU being replaced
1Ignition switch (IGSW)
2Starter signal (STA)
4Throttle position (VTA1)
5Coolant temperature (THW)
6O2 left front (OXL1)
7EGR temperature sensor
9Diagnostic test 1 (TE1)
11Sensor supply +5V (VC)
12EFI main relay (B+)
13EFI main relay (B1+)
14Neutral start switch (NSW)
16Intake air temperature (THA)
17O2 right front (OXR1)
18Sensor ground (E2)
19Vehicle speed (SPD)
20Diagnostic test 2 (TE2)
22Power ground (E1)
MAXXECUPRO-C1-B4 GPO 1
MAXXECUPRO-C4-G1 GPO 23
MAXXECUPRO-C1-C4 GPO 2
MAXXECUPRO-C1-D4 GPO 3
MAXXECUPRO-C4-G2 GPO 24
MAXXECUPRO-C3-C3 ANALOG IN 5 (0-5V)
MAXXECUPRO-C4-D4 DIN 9 (switch)
MAXXECUPRO-C4-E1 DIN 10 (switch)
MAXXECUPRO-C4-E2 DIN 11 (switch)
MAXXECUPRO-C3-D1 ANALOG IN 6 (0-5V)
OEM-B
Stock ECU being replaced
4EFI main relay control (MREL)
5Check-engine lamp (W)
6Fuel pump relay (FPR)
7A/C clutch relay (ACMG)
8Fuel pump control (FC)
11O2 right rear (OXR2)
19Stop light switch (BK)
20A/T kickdown switch (KD)
23A/C request (AC)
24O2 left rear (OXL2)
MAXXECUPRO-C3-D2 ANALOG IN 7 (0-5V)
MAXXECUPRO-C1-K3 DIN/VR 1
MAXXECUPRO-C4-F2 Knock 1
MAXXECUPRO-C4-A3 0-5V out 1
MAXXECUPRO-C1-A2 IGN 1
MAXXECUPRO-C1-H4 HOME
MAXXECUPRO-C1-H3 TRIGGER
MAXXECUPRO-C1-K4 DIN/VR 2
MAXXECUPRO-C4-F3 Knock 2
MAXXECUPRO-C4-A4 0-5V out 2
MAXXECUPRO-C1-A3 IGN 2
0V sensor
0V sensor
OEM-C
Stock ECU being replaced
1TPS idle switch (IDL)
2Igniter 1 feedback (IGF1)
3Knock sensor 1 (KNK1)
4Check connector VF1
5Ignition 1 (IGT1)
7Cam sensor 1 + (G1+)
8Crank sensor + (NE+)
10Igniter 2 feedback (IGF2)
11Knock sensor 2 (KNK2)
12Check connector VF2
13Ignition 2 (IGT2)
15Cam sensor ground (G-)
16Crank sensor - (NE-)
MAXXECUPRO-C4-H1 GPO 27
MAXXECUPRO-C1-A4 GPO 8/TACHO
MAXXECUPRO-C1-C1 GPO 7
MAXXECUPRO-C1-B1 GPO 6
MAXXECUPRO-C1-A1 GPO 5
MAXXECUPRO-C1-K2 INJ 2
MAXXECUPRO-C1-K1 INJ 1
GND
MAXXECUPRO-C1-E4 GPO 4
MAXXECUPRO-C1-D1 WBO2 Heater-
MAXXECUPRO-C3-E1 GPO 10/WBO2 2 HTR
MAXXECUPRO-C4-G3 GPO 25
MAXXECUPRO-C4-G4 GPO 26
MAXXECUPRO-C1-M1 INJ 3
MAXXECUPRO-C1-M2 INJ 4
GND
OEM-D
Stock ECU being replaced
4Cold start injector (STJ)
5ISC stepper coil 4 (ISC4)
6ISC stepper coil 3 (ISC3)
7ISC stepper coil 2 (ISC2)
8ISC stepper coil 1 (ISC1)
11Injector 2&8 (#20)
12Injector 1&7 (#10)
13Power ground (E01)
17Cold start injector 1 (STJ1)
19O2 heater 2 (HT2)
20O2 heater 1 (HT1)
21EGR solenoid
22Fuel pressure-up VSV (PR)
24Injector 3&5 (#40)
25Injector 4&6 (#30)
26Power ground (E02)
MAXXECUPRO
MAXXECUPRO-C1
MAXXECUPRO
A1GPO 5
A2IGN 1
A3IGN 2
A4GPO 8/TACHO
B1GPO 6
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
L4Engine GND
M1INJ 3
M2INJ 4
M4+12V ECU power supply
OEM-D-8 ISC stepper coil 1 (ISC1)
OEM-C-5 Ignition 1 (IGT1)
OEM-C-13 Ignition 2 (IGT2)
OEM-D-5 ISC stepper coil 4 (ISC4)
OEM-D-7 ISC stepper coil 2 (ISC2)
OEM-B-4 EFI main relay control (MREL)
OEM-D-6 ISC stepper coil 3 (ISC3)
OEM-B-6 Fuel pump relay (FPR)
OEM-D-19 O2 heater 2 (HT2)
OEM-B-7 A/C clutch relay (ACMG)
OEM-D-17 Cold start injector 1 (STJ1)
OEM-A-5 Coolant temperature (THW)
OEM-A-16 Intake air temperature (THA)
5V ref
OEM-A-4 Throttle position (VTA1)
0V sensor
0V sensor
OEM-C-8 Crank sensor + (NE+)
OEM-C-7 Cam sensor 1 + (G1+)
OEM-A-7 EGR temperature sensor
OEM-A-17 O2 right front (OXR1)
OEM-A-6 O2 left front (OXL1)
OEM-D-12 Injector 1&7 (#10)
OEM-D-11 Injector 2&8 (#20)
OEM-C-2 Igniter 1 feedback (IGF1)
OEM-C-10 Igniter 2 feedback (IGF2)
GND
OEM-D-24 Injector 3&5 (#40)
OEM-D-25 Injector 4&6 (#30)
+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)
E1GPO 10/WBO2 2 HTR
J2SENSOR GND
J3SENSOR GND
K3KEY IN 12V
L4ENGINE GROUND 2
M412V ECU 2
OEM-A-19 Vehicle speed (SPD)
OEM-A-9 Diagnostic test 1 (TE1)
OEM-A-20 Diagnostic test 2 (TE2)
OEM-A-14 Neutral start switch (NSW)
OEM-B-11 O2 right rear (OXR2)
OEM-B-24 O2 left rear (OXL2)
OEM-C-1 TPS idle switch (IDL)
OEM-D-20 O2 heater 1 (HT1)
0V sensor
0V sensor
OEM-A-1 Ignition switch (IGSW)
GND
12V ECU 2
MAXXECUPRO-C4
MAXXECUPRO
A30-5V out 1
A40-5V out 2
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-C-4 Check connector VF1
OEM-C-12 Check connector VF2
OEM-A-2 Starter signal (STA)
OEM-B-19 Stop light switch (BK)
OEM-B-20 A/T kickdown switch (KD)
OEM-B-23 A/C request (AC)
OEM-C-3 Knock sensor 1 (KNK1)
OEM-C-11 Knock sensor 2 (KNK2)
OEM-B-5 Check-engine lamp (W)
OEM-B-8 Fuel pump control (FC)
OEM-D-21 EGR solenoid
OEM-D-22 Fuel pressure-up VSV (PR)
OEM-D-4 Cold start injector (STJ)
SP-14V · 5 pins
SP-0V · 8 pins
SP-GND · 9 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.
67 / 67 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
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