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-63 Peak Hold Injector 3
GND
M170-A-33 Peak Hold Injector 1
M170-A-43 Low Side Injector 1
0V sensor
M170-A-50 Peak Hold Injector 2
0V sensor
M170-A-51 Low Side Injector 2
GND
GND
OEM-A
Stock ECU being replaced
1HCooling fan relay (low speed)
1LPower ground
1QInjector 1 (front primary)
1UInjector 2 (rear primary)
1XSensor ground
1YInjector 3 (front secondary)
1ABSensor ground
1ACInjector 4 (rear secondary)
1AFPower ground
1AJPower ground
OEM-B
Stock ECU being replaced
5V ref
M170-A-6 Analogue Voltage Input 3
M170-A-7 Analogue Voltage Input 4
M170-A-18 Analogue Voltage Input 2
M170-A-29 Knock Input 1
M170-A-49 Universal Digital Input 1
0V sensor
M170-A-38 Analogue Temperature Input 2
M170-A-56 Universal Digital Input 2
M170-A-30 Analogue Temperature Input 3
M170-A-28 Analogue Temperature Input 1
0V sensor
OEM-C
Stock ECU being replaced
3A+5V sensor supply
3DO2 sensor (narrowband)
3HOMP position sensor
3IThrottle position (TPS, full range)
3OKnock sensor
3RCrank position (CAS NE)
3SSensor ground (CAS)
3TIntake air temperature (IAT)
3UHome position (CAS G)
3VFuel temperature
3WCoolant temperature (ECT)
3ABSensor ground
ECU main power (+12V via main relay/ECR)
Battery constant (+12V)
M170-A-52 Universal Digital Input 5
M170-A-66 Peak Hold Injector 4
ECU main power (+12V via main relay/ECR)
M170-A-24 Peak Hold Injector 5
M170-A-42 Peak Hold Injector 6
M170-A-57 Peak Hold Injector 7
M170-A-62 Peak Hold Injector 8
M170-A-46 Universal Digital Input 3
M170-A-53 Universal Digital Input 6
M170-A-13 Universal Digital Input 7
M170-A-22 Universal Digital Input 8
M170-A-45 Universal Digital Input 4
M170-A-1 Low Side Ignition 1
M170-A-26 Analogue Voltage Input 1
M170-A-5 Low Side Ignition 2
M170-A-4 Low Side Ignition 3
OEM-D
Stock ECU being replaced
4AECU main power (+12V via main relay/ECR)
4BBattery constant (+12V)
4CStart signal (STA)
4DAir pump clutch relay
4EECU main power (+12V via main relay/ECR)
4FFuel pump speed relay
4GFuel pump relay
4IA/C relay
4KCooling fan relay (low speed)
4QVehicle speed sensor
4SClutch switch
4VA/C request
4WPower steering pressure switch
4AABrake pedal switch
4AFIgnition front trailing
4AHMAP sensor (PIM)
4AJIgnition rear trailing
4ANIgnition leading (wasted spark)
M170
M170-A
M170
1Low Side Ignition 1
4Low Side Ignition 3
5Low Side Ignition 2
6Analogue Voltage Input 3
7Analogue Voltage Input 4
11Sensor 0V A
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
30Analogue Temperature Input 3
32Battery Positive
33Peak Hold Injector 1
38Analogue Temperature Input 2
41Battery Positive
42Peak Hold Injector 6
43Low Side Injector 1
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
62Peak Hold Injector 8
63Peak Hold Injector 3
66Peak Hold Injector 4
OEM-D-4AF Ignition front trailing
OEM-D-4AN Ignition leading (wasted spark)
OEM-D-4AJ Ignition rear trailing
OEM-C-3D O2 sensor (narrowband)
OEM-C-3H OMP position sensor
0V sensor
OEM-D-4V A/C request
GND
GND
5V ref
OEM-C-3I Throttle position (TPS, full range)
GND
GND
GND
OEM-D-4W Power steering pressure switch
Battery Positive
OEM-D-4F Fuel pump speed relay
OEM-D-4AH MAP sensor (PIM)
0V sensor
OEM-C-3W Coolant temperature (ECT)
OEM-C-3O Knock sensor
OEM-C-3V Fuel temperature
Battery Positive
OEM-A-1Q Injector 1 (front primary)
OEM-C-3T Intake air temperature (IAT)
Battery Positive
OEM-D-4G Fuel pump relay
OEM-A-1U Injector 2 (rear primary)
OEM-D-4AA Brake pedal switch
OEM-D-4Q Vehicle speed sensor
OEM-C-3R Crank position (CAS NE)
OEM-A-1Y Injector 3 (front secondary)
OEM-A-1AC Injector 4 (rear secondary)
OEM-D-4C Start signal (STA)
OEM-D-4S Clutch switch
Battery Backup
OEM-C-3U Home position (CAS G)
OEM-D-4I A/C relay
OEM-D-4K Cooling fan relay (low speed)
OEM-A-1H Cooling fan relay (low speed)
OEM-D-4D Air pump clutch relay
MAIN
MAIN-R
MAIN
INRelay contact input (battery + via main fuse)
OUTRelay contact output (switched +12V bus)
COIL+Relay coil positive (ignition-switched +12V)
COIL-Relay coil negative (ECU low-side driver)
NEW-BATT
Battery Positive · 3 pins
Relay coil positive (ignition-switched +12V)
SP-GND · 8 pins
SP-GND · 10 pins
SP-0V · 7 pins
SP-14V · 3 pins
◯New feed: NEW-BATT
◯New feed: NEW-KEYON
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.
53 / 53 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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