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
M170-A-33 Peak Hold Injector 1
M170-A-63 Peak Hold Injector 3
M170-A-66 Peak Hold Injector 4
M170-A-43 Low Side Injector 1
M170-A-65 Half Bridge Output 4
M170-A-58 Half Bridge Output 5
M170-A-50 Peak Hold Injector 2
M170-A-64 Half Bridge Output 6
M170-A-51 Low Side Injector 2
M170-A-24 Peak Hold Injector 5
L no data
M170-A-42 Peak Hold Injector 6
M170-A-62 Peak Hold Injector 8
ISC valve +14V feed
M170-A-59 Half Bridge Output 3
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
L no data
MFuel pump relay
OFuel pump relay (non-immobiliser)
PISC valve +14V feed
QISC valve low side
GND
GND
E no data
M170-A-1 Low Side Ignition 1
G no data
M170-A-57 Peak Hold Injector 7
M170-A-5 Low Side Ignition 2
M170-A-9 Half Bridge Output 1
L no data
N no data
M170-A-8 Half Bridge Output 2
R no data
M170-A-45 Universal Digital Input 4
M170-A-46 Universal Digital Input 3
M170-A-56 Universal Digital Input 2
W–X no data
M170-A-49 Universal Digital Input 1
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)
JFront O2 heater
L no data
N no data
PRear O2 heater
R no data
SImmobiliser
TVehicle speed
VCam position (CMP)
W–X no data
YCrank position (CKP)
Z no data
GND
M170-A-52 Universal Digital Input 5
M170-A-53 Universal Digital Input 6
VVT oil-control solenoid +12V feed
M170-A-13 Universal Digital Input 7
G no data
M170-A-22 Universal Digital Input 8
M170-A-35 Analogue Voltage Input 7
M170-A-44 Analogue Voltage Input 8
K no data
5V ref
M170-A-29 Knock Input 1
M170-A-38 Analogue Temperature Input 2
0V sensor
M170-A-28 Analogue Temperature Input 1
Q no data
U no data
M170-A-6 Analogue Voltage Input 3
M170-A-12 Analogue Voltage Input 5
M170-A-26 Analogue Voltage Input 1
Y no data
M170-A-7 Analogue Voltage Input 4
AB no data
M170-A-36 Analogue Voltage Input 6
M170-A-18 Analogue Voltage Input 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
G no data
HNeutral switch
IClutch switch
JVTCS vacuum switch
K no data
L+5V sensor supply
MKnock sensor
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
M170
M170-A
M170
1Low Side Ignition 1
5Low Side Ignition 2
6Analogue Voltage Input 3
7Analogue Voltage Input 4
8Half Bridge Output 2
9Half Bridge Output 1
11Sensor 0V A
12Analogue Voltage Input 5
13Universal Digital Input 7
14Battery Negative 1
15Battery Negative 2
16Sensor 5.0V A
18Analogue Voltage Input 2
19Battery Negative 3
20Battery Negative 4
21Battery Negative 5
22Universal Digital Input 8
23Battery Positive
24Peak Hold Injector 5
26Analogue Voltage Input 1
27Sensor 0V B
28Analogue Temperature Input 1
29Knock Input 1
32Battery Positive
33Peak Hold Injector 1
35Analogue Voltage Input 7
36Analogue Voltage Input 6
38Analogue Temperature Input 2
41Battery Positive
42Peak Hold Injector 6
43Low Side Injector 1
44Analogue Voltage Input 8
45Universal Digital Input 4
46Universal Digital Input 3
49Universal Digital Input 1
50Peak Hold Injector 2
51Low Side Injector 2
52Universal Digital Input 5
53Universal Digital Input 6
54Battery Backup
56Universal Digital Input 2
57Peak Hold Injector 7
58Half Bridge Output 5
59Half Bridge Output 3
62Peak Hold Injector 8
63Peak Hold Injector 3
64Half Bridge Output 6
65Half Bridge Output 4
66Peak Hold Injector 4
OEM-3-F Ignition 1 (coils 1+4, wasted spark)
OEM-3-I Ignition 2 (coils 2+3, wasted spark)
OEM-4-V Throttle position (TPS)
OEM-4-AA Rear O2 signal
OEM-3-P Rear O2 heater
OEM-3-J Front O2 heater
0V sensor
OEM-4-W Front O2 signal
OEM-4-F A/C request
GND
GND
5V ref
OEM-4-AE Pressure sensor (Mazda: EGR boost sensor)
GND
GND
GND
OEM-4-H Neutral switch
Battery Positive
OEM-2-K A/C clutch relay
OEM-4-X Mass air flow (MAF)
0V sensor
OEM-4-P Coolant temperature (ECT)
OEM-4-M Knock sensor
Battery Positive
OEM-2-A Injector 1
OEM-4-I Clutch switch
OEM-4-AD Fuel level
OEM-4-N Intake air temperature (IAT)
Battery Positive
OEM-2-M Fuel pump relay
OEM-2-D Injector 2
OEM-4-J VTCS vacuum switch
OEM-3-S Immobiliser
OEM-3-T Vehicle speed
OEM-3-Y Crank position (CKP)
OEM-2-G Injector 3
OEM-2-J Injector 4
OEM-4-B Brake switch
OEM-4-C Power steering pressure switch
Battery Backup
OEM-3-V Cam position (CMP)
OEM-3-H Main relay
OEM-2-F EGR valve
OEM-2-Q ISC valve low side
OEM-2-O Fuel pump relay (non-immobiliser)
OEM-2-B Cooling fan relay
OEM-2-H EGR valve
OEM-2-E EGR valve
OEM-2-C Condenser fan relay
SP-GND · 9 pins
SP-0V · 4 pins
SP-14V · 7 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.
56 / 56 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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