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
T2-C1-8 Injector 1
T2-C1-1 PWM 1
T2-C1-10 PWM 2
T2-C1-9 Injector 2
T2-C1-8 Injector 1
T2-C1-9 Injector 2
T2-C1-18 PWM 3
L no data
T2-C1-26 PWM 4
ISC valve +14V feed
OEM-2
Stock ECU being replaced
AInjector 1
BCooling fan relay
CCondenser fan relay
DInjector 2
GInjector 3
JInjector 4
KA/C clutch relay
L no data
MFuel pump relay
PISC valve +14V feed
GND
GND
E no data
T2-C1-3 Coil 1
G no data
T2-C1-15 Lambda Heater Negative
T2-C1-6 Coil 2
L no data
N no data
R no data
T2-C1-30 Digital 2
T2-C1-11 Digital 1
T2-C1-12 Wheel 1
W–X no data
T2-C1-19 Crank
Z no data
OEM-3
Stock ECU being replaced
APower ground
BPower ground
E no data
FIgnition 1 (coils 1+4, wasted spark)
G no data
HMain relay
IIgnition 2 (coils 2+3, wasted spark)
L no data
N no data
R no data
SImmobiliser
TVehicle speed
VCam position (CMP)
W–X no data
YCrank position (CKP)
Z no data
GND
VVT oil-control solenoid +12V feed
G no data
K no data
5V ref
T2-C1-32 Thermistor 2
0V sensor
T2-C1-24 Thermistor 1
Q no data
U no data
T2-C1-22 Analogue 2
T2-C1-33 Analogue 5
T2-C1-20 Analogue 1
Y no data
T2-C1-25 Analogue 4
AB no data
T2-C1-34 Analogue 6
T2-C1-23 Analogue 3
ECU power +14V (main relay)
Constant +12V
OEM-4
Stock ECU being replaced
APower ground
DVVT oil-control solenoid +12V feed
G no data
K no data
L+5V sensor supply
NIntake air temperature (IAT)
OSignal ground
PCoolant temperature (ECT)
Q no data
U no data
VThrottle position (TPS)
WFront O2 signal
XMass air flow (MAF)
Y no data
AARear O2 signal
AB no data
ADFuel level
AEPressure sensor (Mazda: EGR boost sensor)
AFECU power +14V (main relay)
AGConstant +12V
T2
T2-C1
T2
1PWM 1
3Coil 1
6Coil 2
8Injector 1
9Injector 2
10PWM 2
11Digital 1
12Wheel 1
13Power Ground 1
14Power Ground 2
15Lambda Heater Negative
18PWM 3
19Crank
20Analogue 1
21Permanent 12v
22Analogue 2
23Analogue 3
24Thermistor 1
25Analogue 4
26PWM 4
275v Output
28Sensor Ground
29Sensor Ground
30Digital 2
31Ignition 12v In
32Thermistor 2
33Analogue 5
34Analogue 6
OEM-2-B Cooling fan relay
OEM-3-F Ignition 1 (coils 1+4, wasted spark)
OEM-3-I Ignition 2 (coils 2+3, wasted spark)
Injector 1 · 2 pins
Injector 4 · 2 pins
OEM-2-C Condenser fan relay
OEM-3-T Vehicle speed
OEM-3-V Cam position (CMP)
GND
GND
OEM-3-H Main relay
OEM-2-K A/C clutch relay
OEM-3-Y Crank position (CKP)
OEM-4-X Mass air flow (MAF)
Permanent 12v
OEM-4-V Throttle position (TPS)
OEM-4-AE Pressure sensor (Mazda: EGR boost sensor)
OEM-4-P Coolant temperature (ECT)
OEM-4-AA Rear O2 signal
OEM-2-M Fuel pump relay
5V ref
0V sensor
0V sensor
OEM-3-S Immobiliser
Ignition 12v In
OEM-4-N Intake air temperature (IAT)
OEM-4-W Front O2 signal
OEM-4-AD Fuel level
SP-GND · 6 pins
SP-0V · 4 pins
SP-14V · 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.
37 / 37 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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