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-C1-B4 GPO 1
MAXXECUPRO-C1-C4 GPO 2
MAXXECUPRO-C1-K4 DIN/VR 2
MAXXECUPRO-C1-A1 GPO 5
MAXXECUPRO-C1-D4 GPO 3
MAXXECUPRO-C3-A3 DIN 6 (SWITCH)
MAXXECUPRO-C3-A4 DIN 7 (SWITCH)
MAXXECUPRO-C1-K3 DIN/VR 1
MAXXECUPRO-C4-D3 DIN 8 (switch)
MAXXECUPRO-C1-E4 GPO 4
OEM-1
Stock ECU being replaced
ACooling fan relay (low-side)
BA/C condenser fan relay
CStarter input (12V while cranking)
ECheck engine light (MIL)
GA/C clutch relay
KA/C pressure switch (A/C request)
LClutch switch
MVehicle speed sensor (VSS)
QBrake switch
UFuel pump relay (low-side)
MAXXECUPRO-C1-J3 AIN 3 (0-5V)
MAXXECUPRO-C3-D1 ANALOG IN 6 (0-5V)
MAXXECUPRO-C3-D2 ANALOG IN 7 (0-5V)
MAXXECUPRO-C1-G2 TPS/AIN
MAXXECUPRO-C1-F1 CLT
MAXXECUPRO-C1-J4 AIN 4 (0-5V)
5V ref
MAXXECUPRO-C3-D3 ANALOG IN 8 (0-5V)
MAXXECUPRO-C1-F2 IAT
MAXXECUPRO-C4-D4 DIN 9 (switch)
MAXXECUPRO-C1-D1 WBO2 Heater-
MAXXECUPRO-C3-C3 ANALOG IN 5 (0-5V)
0V sensor
MAXXECUPRO-C4-E1 DIN 10 (switch)
OEM-3
Stock ECU being replaced
BMAF sensor input
CFront O2 sensor input
DRear O2 sensor input
FThrottle position (TPS)
GEngine coolant temp (CLT)
HEGR boost sensor
I+5V sensor reference
JEGR valve position sensor
KIntake air temp (IAT)
LIdle switch (closed throttle)
MFront O2 heater control
NEGR boost sensor (2nd channel)
OSensor ground
PPower steering pressure switch
GND
ECU power +12V (main relay)
GND
GND
MAXXECUPRO-C1-H3 TRIGGER
MAXXECUPRO-C1-H4 HOME
0V sensor
MAXXECUPRO-C1-B1 GPO 6
GND
MAXXECUPRO-C4-G3 GPO 25
MAXXECUPRO-C1-A2 IGN 1
MAXXECUPRO-C1-C1 GPO 7
MAXXECUPRO-C1-A4 GPO 8/TACHO
MAXXECUPRO-C4-G1 GPO 23
MAXXECUPRO-C1-A3 IGN 2
MAXXECUPRO-C4-G2 GPO 24
MAXXECUPRO-C1-K1 INJ 1
MAXXECUPRO-C1-K2 INJ 2
MAXXECUPRO-C1-M1 INJ 3
MAXXECUPRO-C1-M2 INJ 4
OEM-4
Stock ECU being replaced
AChassis ground
BECU power +12V (main relay)
CChassis ground
DChassis ground
ECrank position (CKP) sensor
GCAS SGC (cam sync)
HCrank pickup timing ground (CKP gnd)
JPRC solenoid (FPR control)
KChassis ground
LTachometer output
NIgnition coil trigger (cyl 1&4)
OEGR vent solenoid
PEGR vacuum solenoid
QIdle air control (IAC) valve
RIgnition coil trigger (cyl 2&3)
TEVAP purge solenoid
UInjector 1 (cyl 1)
VInjector 2 (cyl 2)
WInjector 3 (cyl 3)
XInjector 4 (cyl 4)
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
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-1-E Check engine light (MIL)
OEM-4-N Ignition coil trigger (cyl 1&4)
OEM-4-R Ignition coil trigger (cyl 2&3)
OEM-4-P EGR vacuum solenoid
OEM-4-J PRC solenoid (FPR control)
OEM-1-A Cooling fan relay (low-side)
OEM-4-O EGR vent solenoid
OEM-1-B A/C condenser fan relay
OEM-3-M Front O2 heater control
OEM-1-G A/C clutch relay
OEM-1-U Fuel pump relay (low-side)
OEM-3-G Engine coolant temp (CLT)
OEM-3-K Intake air temp (IAT)
5V ref
OEM-3-F Throttle position (TPS)
0V sensor
0V sensor
OEM-4-E Crank position (CKP) sensor
OEM-4-G CAS SGC (cam sync)
OEM-3-B MAF sensor input
OEM-3-H EGR boost sensor
OEM-4-U Injector 1 (cyl 1)
OEM-4-V Injector 2 (cyl 2)
OEM-1-M Vehicle speed sensor (VSS)
OEM-1-C Starter input (12V while cranking)
GND
OEM-4-W Injector 3 (cyl 3)
OEM-4-X Injector 4 (cyl 4)
+12V ECU power supply
MAXXECUPRO-C2
MAXXECUPRO
H1Engine ground 3
H2Engine ground 3
H3Engine ground 3
GND
GND
GND
MAXXECUPRO-C3
MAXXECUPRO
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)
J2SENSOR GND
J3SENSOR GND
L4ENGINE GROUND 2
M412V ECU 2
OEM-1-K A/C pressure switch (A/C request)
OEM-1-L Clutch switch
OEM-3-N EGR boost sensor (2nd channel)
OEM-3-C Front O2 sensor input
OEM-3-D Rear O2 sensor input
OEM-3-J EGR valve position sensor
0V sensor
0V sensor
GND
12V ECU 2
MAXXECUPRO-C4
MAXXECUPRO
D3DIN 8 (switch)
D4DIN 9 (switch)
E1DIN 10 (switch)
G1GPO 23
G2GPO 24
G3GPO 25
OEM-1-Q Brake switch
OEM-3-L Idle switch (closed throttle)
OEM-3-P Power steering pressure switch
OEM-4-Q Idle air control (IAC) valve
OEM-4-T EVAP purge solenoid
OEM-4-L Tachometer output
SP-0V · 7 pins
SP-GND · 10 pins
SP-14V · 4 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.
55 / 55 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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