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)
MAXXECUPRO-C3-K3 KEY IN 12V
MAXXECUPRO-C1-D4 GPO 3
MAXXECUPRO-C1-A2 IGN 1
MAXXECUPRO-C1-A3 IGN 2
MAXXECUPRO-C1-B4 GPO 1
MAXXECUPRO-C3-A3 DIN 6 (SWITCH)
MAXXECUPRO-C3-A4 DIN 7 (SWITCH)
MAXXECUPRO-C4-D3 DIN 8 (switch)
MAXXECUPRO-C4-D4 DIN 9 (switch)
MAXXECUPRO-C4-E1 DIN 10 (switch)
MAXXECUPRO-C1-C4 GPO 2
MAXXECUPRO-C4-E2 DIN 11 (switch)
MAXXECUPRO-C1-K3 DIN/VR 1
MAXXECUPRO-C1-K4 DIN/VR 2
OEM-1
Stock ECU being replaced
BECU power +14V (main relay)
CIgnition on (+12V)
EMalfunction indicator lamp (MIL)
GIgnition 1 (coils 1+4, wasted spark)
HIgnition 2 (coils 2+3, wasted spark)
JA/C relay
KDiagnostic mode switch (TEN)
NWide-open throttle switch
OStop light switch
PPower steering pressure switch
QA/C thermo switch
RA/C extra cooling fan relay
SHeater control switch (A/C request)
UTail fuse / TNS (parking lamp +12V)
VNeutral/clutch switch
GND
GND
0V sensor
0V sensor
MAXXECUPRO-C1-H3 TRIGGER
F no data
MAXXECUPRO-C1-H4 HOME
MAXXECUPRO-C1-B1 GPO 6
5V ref
MAXXECUPRO-C3-A1 DIN/VR 4
MAXXECUPRO-C1-G2 TPS/AIN
MAXXECUPRO-C1-J4 AIN 4 (0-5V)
MAXXECUPRO-C1-J3 AIN 3 (0-5V)
MAXXECUPRO-C1-F2 IAT
MAXXECUPRO-C1-F1 CLT
MAXXECUPRO-C1-K1 INJ 1
MAXXECUPRO-C1-K2 INJ 2
MAXXECUPRO-C1-E4 GPO 4
MAXXECUPRO-C1-A1 GPO 5
MAXXECUPRO-C1-M1 INJ 3
MAXXECUPRO-C1-M2 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
GCam position (CAS G)
ITachometer output
K+5V sensor supply
LIdle switch (TPS)
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
XPurge solenoid valve
YInjector 3 (California sequential)
ZInjector 4 (California sequential)
MAXXECUPRO
MAXXECUPRO-C1
MAXXECUPRO
A1GPO 5
A2IGN 1
A3IGN 2
B1GPO 6
B4GPO 1
C4GPO 2
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-2-X Purge solenoid valve
OEM-1-G Ignition 1 (coils 1+4, wasted spark)
OEM-1-H Ignition 2 (coils 2+3, wasted spark)
OEM-2-I Tachometer output
OEM-1-J A/C relay
OEM-1-R A/C extra cooling fan relay
OEM-1-E Malfunction indicator lamp (MIL)
OEM-2-W Idle speed control (ISC) valve
OEM-2-Q Coolant temperature (ECT)
OEM-2-P Intake air temperature (IAT)
5V ref
OEM-2-M TPS signal (A/T)
0V sensor
0V sensor
OEM-2-E Crank position (CAS NE)
OEM-2-G Cam position (CAS G)
OEM-2-O Air flow meter (AFM)
OEM-2-N O2 sensor
OEM-2-U Injector 1 & 3 (batch)
OEM-2-V Injector 2 & 4 (batch)
OEM-1-U Tail fuse / TNS (parking lamp +12V)
OEM-1-V Neutral/clutch switch
GND
OEM-2-Y Injector 3 (California sequential)
OEM-2-Z Injector 4 (California sequential)
+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
A3DIN 6 (SWITCH)
A4DIN 7 (SWITCH)
J2SENSOR GND
J3SENSOR GND
K3KEY IN 12V
L4ENGINE GROUND 2
M412V ECU 2
OEM-2-L Idle switch (TPS)
OEM-1-K Diagnostic mode switch (TEN)
OEM-1-N Wide-open throttle switch
0V sensor
0V sensor
OEM-1-C Ignition on (+12V)
GND
12V ECU 2
MAXXECUPRO-C4
MAXXECUPRO
D3DIN 8 (switch)
D4DIN 9 (switch)
E1DIN 10 (switch)
E2DIN 11 (switch)
OEM-1-O Stop light switch
OEM-1-P Power steering pressure switch
OEM-1-Q A/C thermo switch
OEM-1-S Heater control switch (A/C request)
SP-14V · 4 pins
SP-0V · 7 pins
SP-GND · 8 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.