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
Constant +12V
ECU power +14V (main relay)
T4-C2-4 Digital 1
T4-C1-5 PWM 1
T4-C1-10 Coil 1
T4-C1-18 Coil 2
T4-C2-14 Digital 4
T4-C2-15 Digital 5
T4-C2-2 Wheel 1
T4-C2-5 Analogue 3
OEM-1
Stock ECU being replaced
AConstant +12V
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)
NWide-open throttle switch
PPower steering pressure switch
QA/C request
VNeutral/clutch switch
GND
GND
0V sensor
0V sensor
T4-C2-12 Crank
F no data
T4-C2-22 Cam 1
T4-C1-4 PWM 2
5V ref
T4-C2-6 Analogue 4
T4-C2-1 Analogue 2
T4-C2-10 Analogue 1
T4-C2-25 Thermistor 2
T4-C2-7 Thermistor 1
T4-C1-9 Injector 1
T4-C1-17 Injector 2
T4-C1-34 Injector 3
T4-C1-25 Injector 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)
NO2 sensor
OAir flow meter (AFM)
PIntake air temperature (IAT)
QCoolant temperature (ECT)
UInjector 1 & 3 (batch)
VInjector 2 & 4 (batch)
YInjector 3 (California sequential)
ZInjector 4 (California sequential)
T4
T4-C1
T4
4PWM 2
5PWM 1
9Injector 1
10Coil 1
13Power Ground 1
14Power Ground 2
17Injector 2
18Coil 2
25Injector 4
31Ignition 12v In
34Injector 3
OEM-2-I Tachometer output
OEM-1-E Malfunction indicator lamp (MIL)
OEM-2-U Injector 1 & 3 (batch)
OEM-1-G Ignition 1 (coils 1+4, wasted spark)
GND
GND
OEM-2-V Injector 2 & 4 (batch)
OEM-1-H Ignition 2 (coils 2+3, wasted spark)
OEM-2-Z Injector 4 (California sequential)
Ignition 12v In
OEM-2-Y Injector 3 (California sequential)
T4-C2
T4
1Analogue 2
2Wheel 1
4Digital 1
5Analogue 3
6Analogue 4
7Thermistor 1
10Analogue 1
12Crank
14Digital 4
15Digital 5
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
33Sensor Ground
OEM-2-N O2 sensor
OEM-1-Q A/C request
OEM-1-C Start signal
OEM-1-V Neutral/clutch switch
OEM-2-L Idle switch (TPS)
OEM-2-Q Coolant temperature (ECT)
OEM-2-O Air flow meter (AFM)
OEM-2-E Crank position (CAS NE)
OEM-1-N Wide-open throttle switch
OEM-1-P Power steering pressure switch
0V sensor
OEM-2-G Cam position (CAS G)
5V ref
OEM-2-P Intake air temperature (IAT)
0V sensor
T4-C3
T4
26Permanent 12v
Permanent 12v
SP-14V · 3 pins
SP-GND · 5 pins
SP-0V · 5 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.