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
ECU power +14V (main relay)
MAXXECUMINI-C1-B1 DIN 1 (Hall only)
MAXXECUMINI-C1-E1 GPO 3
MAXXECUMINI-C1-F1 IGN 1
MAXXECUMINI-C1-F2 IGN 2
MAXXECUMINI-C1-G2 GPO 1
MAXXECUMINI-C1-B2 DIN 2 (Hall only)
MAXXECUMINI-C1-G1 GPO 2
OEM-1
Stock ECU being replaced
BECU power +14V (main relay)
CStart signal
EMalfunction indicator lamp (MIL)
GIgnition 1 (coils 1+4, wasted spark)
HIgnition 2 (coils 2+3, wasted spark)
JA/C relay
NWide-open throttle switch
RA/C extra cooling fan relay
GND
GND
0V sensor
0V sensor
MAXXECUMINI-C1-A1 TRIGGER
F no data
5V ref
MAXXECUMINI-C1-D2 TPS
MAXXECUMINI-C1-C4 AIN 4 (0-5V)
MAXXECUMINI-C1-C3 AIN 3 (0-5V)
MAXXECUMINI-C1-C2 IAT
MAXXECUMINI-C1-C1 CLT
MAXXECUMINI-C1-G3 INJ 1
MAXXECUMINI-C1-H1 INJ 2
MAXXECUMINI-C1-D1 GPO 8/TACHO
MAXXECUMINI-C1-H2 INJ 3
MAXXECUMINI-C1-H3 INJ 4
OEM-2
Stock ECU being replaced
APower ground
BPower ground
CSensor ground (E2)
DSensor ground (E2)
ECrank position (CAS NE)
F no data
K+5V sensor supply
MTPS signal (A/T)
NO2 sensor
OAir flow meter (AFM)
PIntake air temperature (IAT)
QCoolant temperature (ECT)
UInjector 1 & 3 (batch)
VInjector 2 & 4 (batch)
WIdle speed control (ISC) valve
YInjector 3 (California sequential)
ZInjector 4 (California sequential)
MAXXECUMINI
MAXXECUMINI-C1
MAXXECUMINI
A1TRIGGER
A2TRIGGER GND
B1DIN 1 (Hall only)
B2DIN 2 (Hall only)
B3SENSOR GND
B4SENSOR GND
C1CLT
C2IAT
C3AIN 3 (0-5V)
C4AIN 4 (0-5V)
D1GPO 8/TACHO
D2TPS
D4SENSOR GND
E1GPO 3
E2+5V sensor supply
F1IGN 1
F2IGN 2
G1GPO 2
G2GPO 1
G3INJ 1
G4ENGINE GND
H1INJ 2
H2INJ 3
H3INJ 4
H4+12V (ECU power supply)
OEM-2-E Crank position (CAS NE)
0V sensor
OEM-1-C Start signal
OEM-1-N Wide-open throttle switch
0V sensor
0V sensor
OEM-2-Q Coolant temperature (ECT)
OEM-2-P Intake air temperature (IAT)
OEM-2-O Air flow meter (AFM)
OEM-2-N O2 sensor
OEM-2-W Idle speed control (ISC) valve
OEM-2-M TPS signal (A/T)
0V sensor
OEM-1-E Malfunction indicator lamp (MIL)
5V ref
OEM-1-G Ignition 1 (coils 1+4, wasted spark)
OEM-1-H Ignition 2 (coils 2+3, wasted spark)
OEM-1-R A/C extra cooling fan relay
OEM-1-J A/C relay
OEM-2-U Injector 1 & 3 (batch)
GND
OEM-2-V Injector 2 & 4 (batch)
OEM-2-Y Injector 3 (California sequential)
OEM-2-Z Injector 4 (California sequential)
+12V (ECU power supply)
SP-0V · 7 pins
SP-14V · 3 pins
SP-GND · 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.
30 / 30 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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