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
T4-C1-5 PWM 1
T4-C1-4 PWM 2
T4-C2-14 Digital 4
T4-C3-23 PWM 5
T4-C1-3 PWM 3
T4-C2-15 Digital 5
T4-C2-34 Analogue 9
T4-C2-4 Digital 1
T4-C2-3 Analogue 10
T4-C3-22 PWM 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)
T4-C2-10 Analogue 1
T4-C2-19 Analogue 6
T4-C3-17 Analogue 7
T4-C2-1 Analogue 2
T4-C2-7 Thermistor 1
T4-C2-5 Analogue 3
5V ref
T4-C3-18 Analogue 8
T4-C2-25 Thermistor 2
T4-C2-16 Analogue 11
T4-C3-9 Lambda 1 Heater Negative
T4-C2-6 Analogue 4
0V sensor
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
GND
ECU power +12V (main relay)
GND
GND
T4-C2-12 Crank
T4-C2-2 Wheel 1
T4-C2-22 Cam 1
0V sensor
Permanent +12V (battery)
T4-C3-24 PWM 6
GND
T4-C1-10 Coil 1
T4-C3-25 PWM 7
T4-C3-10 PWM 8
T4-C1-18 Coil 2
T4-C1-9 Injector 1
T4-C1-17 Injector 2
T4-C1-34 Injector 3
T4-C1-25 Injector 4
OEM-4
Stock ECU being replaced
AChassis ground
BECU power +12V (main relay)
CChassis ground
DChassis ground
ECrank position (CKP) sensor
FCAS SGT (cam trigger)
GCAS SGC (cam sync)
HCrank pickup timing ground (CKP gnd)
IPermanent +12V (battery)
JPRC solenoid (FPR control)
KChassis ground
NIgnition coil trigger (cyl 1&4)
OEGR vent solenoid
PEGR vacuum solenoid
RIgnition coil trigger (cyl 2&3)
UInjector 1 (cyl 1)
VInjector 2 (cyl 2)
WInjector 3 (cyl 3)
XInjector 4 (cyl 4)
T4
T4-C1
T4
3PWM 3
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-1-G A/C clutch relay
OEM-1-B A/C condenser fan relay
OEM-1-A Cooling fan relay (low-side)
OEM-4-U Injector 1 (cyl 1)
OEM-4-N Ignition coil trigger (cyl 1&4)
GND
GND
OEM-4-V Injector 2 (cyl 2)
OEM-4-R Ignition coil trigger (cyl 2&3)
OEM-4-X Injector 4 (cyl 4)
Ignition 12v In
OEM-4-W Injector 3 (cyl 3)
T4-C2
T4
1Analogue 2
2Wheel 1
3Analogue 10
4Digital 1
5Analogue 3
6Analogue 4
7Thermistor 1
10Analogue 1
12Crank
14Digital 4
15Digital 5
16Analogue 11
19Analogue 6
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
33Sensor Ground
34Analogue 9
OEM-3-F Throttle position (TPS)
OEM-4-F CAS SGT (cam trigger)
OEM-1-Q Brake switch
OEM-1-M Vehicle speed sensor (VSS)
OEM-3-H EGR boost sensor
OEM-3-N EGR boost sensor (2nd channel)
OEM-3-G Engine coolant temp (CLT)
OEM-3-B MAF sensor input
OEM-4-E Crank position (CKP) sensor
OEM-1-C Starter input (12V while cranking)
OEM-1-K A/C pressure switch (A/C request)
OEM-3-L Idle switch (closed throttle)
OEM-3-C Front O2 sensor input
0V sensor
OEM-4-G CAS SGC (cam sync)
5V ref
OEM-3-K Intake air temp (IAT)
0V sensor
OEM-1-L Clutch switch
T4-C3
T4
9Lambda 1 Heater Negative
10PWM 8
17Analogue 7
18Analogue 8
22PWM 4
23PWM 5
24PWM 6
25PWM 7
26Permanent 12v
OEM-3-M Front O2 heater control
OEM-4-P EGR vacuum solenoid
OEM-3-D Rear O2 sensor input
OEM-3-J EGR valve position sensor
OEM-1-U Fuel pump relay (low-side)
OEM-1-E Check engine light (MIL)
OEM-4-J PRC solenoid (FPR control)
OEM-4-O EGR vent solenoid
Permanent 12v
SP-14V · 3 pins
SP-GND · 7 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.