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-C1-9 Injector 1
T4-C1-5 PWM 1
T4-C1-4 PWM 2
T4-C1-17 Injector 2
T4-C3-10 PWM 8
T4-C1-6 Motor 1 +
T4-C1-34 Injector 3
T4-C1-7 Motor 1 -
T4-C1-25 Injector 4
T4-C1-3 PWM 3
T4-C3-22 PWM 4
ISC valve +14V feed
T4-C3-25 PWM 7
OEM-2
Stock ECU being replaced
AInjector 1
BCooling fan relay
CCondenser fan relay
DInjector 2
EEGR valve
FEGR valve
GInjector 3
HEGR valve
JInjector 4
KA/C clutch relay
MFuel pump relay
PISC valve +14V feed
QISC valve low side
GND
GND
T4-C1-10 Coil 1
T4-C3-23 PWM 5
T4-C1-18 Coil 2
T4-C3-9 Lambda 1 Heater Negative
T4-C3-24 PWM 6
T4-C2-4 Digital 1
T4-C2-2 Wheel 1
T4-C2-22 Cam 1
T4-C2-12 Crank
OEM-3
Stock ECU being replaced
APower ground
BPower ground
FIgnition 1 (coils 1+4, wasted spark)
HMain relay
IIgnition 2 (coils 2+3, wasted spark)
JFront O2 heater
PRear O2 heater
SImmobiliser
TVehicle speed
VCam position (CMP)
YCrank position (CKP)
GND
T4-C2-14 Digital 4
T4-C2-15 Digital 5
VVT oil-control solenoid +12V feed
T4-C3-18 Analogue 8
T4-C2-34 Analogue 9
T4-C2-3 Analogue 10
T4-C2-16 Analogue 11
5V ref
T4-C2-25 Thermistor 2
0V sensor
T4-C2-7 Thermistor 1
T4-C2-5 Analogue 3
T4-C2-19 Analogue 6
T4-C2-10 Analogue 1
T4-C2-6 Analogue 4
T4-C3-17 Analogue 7
T4-C2-1 Analogue 2
ECU power +14V (main relay)
Constant +12V
OEM-4
Stock ECU being replaced
APower ground
BBrake switch
CPower steering pressure switch
DVVT oil-control solenoid +12V feed
FA/C request
HNeutral switch
IClutch switch
JVTCS vacuum switch
L+5V sensor supply
NIntake air temperature (IAT)
OSignal ground
PCoolant temperature (ECT)
VThrottle position (TPS)
WFront O2 signal
XMass air flow (MAF)
AARear O2 signal
ADFuel level
AEPressure sensor (Mazda: EGR boost sensor)
AFECU power +14V (main relay)
AGConstant +12V
T4
T4-C1
T4
3PWM 3
4PWM 2
5PWM 1
6Motor 1 +
7Motor 1 -
9Injector 1
10Coil 1
13Power Ground 1
14Power Ground 2
17Injector 2
18Coil 2
25Injector 4
31Ignition 12v In
34Injector 3
OEM-2-K A/C clutch relay
OEM-2-C Condenser fan relay
OEM-2-B Cooling fan relay
OEM-2-F EGR valve
OEM-2-H EGR valve
OEM-2-A Injector 1
OEM-3-F Ignition 1 (coils 1+4, wasted spark)
GND
GND
OEM-2-D Injector 2
OEM-3-I Ignition 2 (coils 2+3, wasted spark)
OEM-2-J Injector 4
Ignition 12v In
OEM-2-G Injector 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-4-AE Pressure sensor (Mazda: EGR boost sensor)
OEM-3-T Vehicle speed
OEM-4-I Clutch switch
OEM-3-S Immobiliser
OEM-4-V Throttle position (TPS)
OEM-4-AA Rear O2 signal
OEM-4-P Coolant temperature (ECT)
OEM-4-X Mass air flow (MAF)
OEM-3-Y Crank position (CKP)
OEM-4-B Brake switch
OEM-4-C Power steering pressure switch
OEM-4-J VTCS vacuum switch
OEM-4-W Front O2 signal
0V sensor
OEM-3-V Cam position (CMP)
5V ref
OEM-4-N Intake air temperature (IAT)
0V sensor
OEM-4-H Neutral 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-J Front O2 heater
OEM-2-E EGR valve
OEM-4-AD Fuel level
OEM-4-F A/C request
OEM-2-M Fuel pump relay
OEM-3-H Main relay
OEM-3-P Rear O2 heater
OEM-2-Q ISC valve low side
Permanent 12v
SP-GND · 6 pins
SP-14V · 5 pins
SP-0V · 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.
49 / 49 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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