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)
P8-C1-6 Shift Light
P8-C1-13 Map2/ALS/Ana1 On/Off
P8-C1-14 Traction Wet/Dry
P8-C1-41 Fuel Pump Relay
P8-C1-17 Injector 5
P8-C1-31 Launch Button
P8-C1-35 Injector 6
P8-C1-5 Aux Out 2
P8-C1-43 Aux Out 3
P8-C1-21 Turbo Pressure Valve
P8-C1-32 Traction On/Off
OEM-1
Stock ECU being replaced
BECU power +14V (main relay)
EMalfunction indicator lamp (MIL)
FBrake switch
GPower steering pressure switch
ICondenser fan relay
OAlternator control
PA/C request
QCharge lamp
RCooling fan relay
SA/C clutch relay
UFront O2 heater
VNeutral switch
P8-C1-44 Analogue Input 3
P8-C1-45 Air Temp
P8-C1-12 Lambda Signal
P8-C1-11 Undriven Wheel (must)
P8-C1-26 Water Temp
P8-C1-27 Cam Sensor
5V ref
P8-C1-8 Crank Sensor
P8-C1-24 Tacho
P8-C1-25 Analogue Input 1
P8-C1-53 Injector 7
P8-C1-16 Injector 8
OEM-2
Stock ECU being replaced
AFuel tank pressure
BIntake air temperature (IAT)
CFront O2 signal
DVehicle speed
ECoolant temperature (ECT)
HCam position (CMP)
I+5V sensor supply
JCrank position (CKP)
KTachometer output
LMass air flow (MAF)
MEGR valve
NEGR valve
GND
GND
GND
P8-C1-48 Throttle Wiper
0V sensor
P8-C1-1 Coil 1
P8-C1-38 Coil 2
P8-C1-33 Shift Cut
P8-C1-7 Analogue Input 2 Or Log Switch
ISC valve +14V feed
P8-C1-42 Cam Phase Valve/Aux Out 4
P8-C1-4 Idle Valve
P8-C1-30 Map
P8-C1-23 Turbo ALS Valve
P8-C1-37 Injector 1
P8-C1-18 Injector 2
P8-C1-54 Injector 3
P8-C1-36 Injector 4
OEM-3
Stock ECU being replaced
APower ground
BPower ground
CPower ground
EThrottle position (TPS)
FSignal ground
GIgnition 1 (coils 1+4, wasted spark)
HIgnition 2 (coils 2+3, wasted spark)
IClutch switch
JRear O2 signal
MISC valve +14V feed
NFuel pump relay
OISC valve low side
SPressure sensor (Mazda: EGR boost sensor)
VRear O2 heater
WInjector 1
XInjector 2
YInjector 3
ZInjector 4
P8
P8-C1
P8
1Coil 1
4Idle Valve
5Aux Out 2
6Shift Light
7Analogue Input 2 Or Log Switch
8Crank Sensor
105 Volts
11Undriven Wheel (must)
12Lambda Signal
13Map2/ALS/Ana1 On/Off
14Traction Wet/Dry
15Power Ground
16Injector 8
17Injector 5
18Injector 2
1912 Volts
21Turbo Pressure Valve
23Turbo ALS Valve
24Tacho
25Analogue Input 1
26Water Temp
27Cam Sensor
30Map
31Launch Button
32Traction On/Off
33Shift Cut
34Power Ground
35Injector 6
36Injector 4
37Injector 1
38Coil 2
41Fuel Pump Relay
42Cam Phase Valve/Aux Out 4
43Aux Out 3
44Analogue Input 3
45Air Temp
46Signal Ground
47Signal Ground
48Throttle Wiper
49Lambda Earth
51Signal Ground
53Injector 7
54Injector 3
55Power Ground
OEM-3-G Ignition 1 (coils 1+4, wasted spark)
OEM-3-O ISC valve low side
OEM-1-R Cooling fan relay
OEM-1-E Malfunction indicator lamp (MIL)
OEM-3-J Rear O2 signal
OEM-2-J Crank position (CKP)
5V ref
OEM-2-D Vehicle speed
OEM-2-C Front O2 signal
OEM-1-F Brake switch
OEM-1-G Power steering pressure switch
GND
OEM-2-N EGR valve
OEM-1-O Alternator control
OEM-3-X Injector 2
12 Volts
OEM-1-U Front O2 heater
OEM-3-V Rear O2 heater
OEM-2-K Tachometer output
OEM-2-L Mass air flow (MAF)
OEM-2-E Coolant temperature (ECT)
OEM-2-H Cam position (CMP)
OEM-3-S Pressure sensor (Mazda: EGR boost sensor)
OEM-1-P A/C request
OEM-1-V Neutral switch
OEM-3-I Clutch switch
GND
OEM-1-Q Charge lamp
OEM-3-Z Injector 4
OEM-3-W Injector 1
OEM-3-H Ignition 2 (coils 2+3, wasted spark)
OEM-1-I Condenser fan relay
OEM-3-N Fuel pump relay
OEM-1-S A/C clutch relay
OEM-2-A Fuel tank pressure
OEM-2-B Intake air temperature (IAT)
0V sensor
0V sensor
OEM-3-E Throttle position (TPS)
0V sensor
0V sensor
OEM-2-M EGR valve
OEM-3-Y Injector 3
GND
SP-14V · 4 pins
SP-GND · 7 pins
SP-0V · 6 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.