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
MS3PROMINI-A-10 Injector out F
MS3PROMINI-A-11 Injector out G
MS3PROMINI-A-12 Injector out H
MS3PROMINI-A-4 Fuel pump out
MS3PROMINI-A-17 Spark out A
GND
ECM power source (IGP1)
MS3PROMINI-A-5 Injector out A
MS3PROMINI-A-6 Injector out B
MS3PROMINI-A-7 Injector out C
MS3PROMINI-A-18 Spark out B
GND
0V sensor
OEM-A
Stock ECU being replaced
1Injector 1 (INJ1)
2Injector 2 (INJ2)
3Injector 3 (INJ3)
5Fuel pump relay (FLR1)
11Ignition coil 1 (IGN COIL1)
12Power ground (PG1)
13ECM power source (IGP1)
14Injector 4 (INJ4)
15Injector 5 (INJ5)
16Injector 6 (INJ6)
24Ignition coil 2 (IGN COIL2)
25Power ground (PG2)
26Logic ground (LG1)
MS3PROMINI-A-33 CMP-
MS3PROMINI-A-32 CMP+
MS3PROMINI-A-31 CKP-
MS3PROMINI-A-30 CKP+
0V sensor
MS3PROMINI-A-20 Spark out D
MS3PROMINI-A-19 Spark out C
0V sensor
0V sensor
0V sensor
0V sensor
OEM-B
Stock ECU being replaced
5Cylinder position sensor 2 + (CYP 2P)
6Cylinder position sensor 1 + (CYP 1P)
7Crank position sensor 2 + (CKP 2P)
8Crank position sensor 1 + (CKP 1P)
9Logic ground (LG2)
11Ignition coil 4 (IGN COIL4)
12Ignition coil 3 (IGN COIL3)
13Cylinder position sensor 2 return (CYP 2M)
14Cylinder position sensor 1 return (CYP 1M)
15Crank position sensor 2 return (CKP 2M)
16Crank position sensor 1 return (CKP 1M)
ECM power source (IGP2)
MS3PROMINI-A-34 Digital frequency in 1 (Hall)
OEM-C
Stock ECU being replaced
1ECM power source (IGP2)
7Vehicle speed sensor (VSS)
MS3PROMINI-A-26 CLT in
MS3PROMINI-A-27 IAT in
MS3PROMINI-A-13 Analog in 1
5V ref
0V sensor
MS3PROMINI-A-15 Analog in 3
MS3PROMINI-A-16 Analog in 4
OEM-D
Stock ECU being replaced
7Engine coolant temperature (ECT)
8Intake air temperature (IAT)
9MAP sensor
10Sensor 5V supply (VCC2)
11Sensor ground (SG2)
12Throttle position sensor (TPS)
16Front secondary O2 signal (O2S FS)
5V ref
0V sensor
MS3PROMINI-A-9 Injector out E
MS3PROMINI-A-35 Digital frequency in 2 (Hall)
MS3PROMINI-A-14 Analog in 2
MS3PROMINI-A-28 TPS in
5V ref
0V sensor
MS3PROMINI-A-29 Digital switched in 1 / Flex fuel
MS3PROMINI-A-3 PWM out 1 / Idle
MS3PROMINI-A-8 Injector out D
OEM-F
Stock ECU being replaced
1Sensor 5V supply (VCC1)
2Sensor ground (SG1)
4Fuel pump relay 2 (FLR2)
6Brake switch 2 (BKSW2)
12Accelerator pedal position 2 (AP2)
13Accelerator pedal position 1 (AP1)
14Accelerator pedal 5V supply (VCC3)
15Accelerator pedal ground (SG3)
16Brake switch 1 (BKSW1)
19VTEC solenoid front (VT SOLF)
20VTEC solenoid rear (VT SOLR)
Throttle motor power source 1 (IGM1)
Throttle motor power source 2 (IGM2)
GND
GND
Throttle motor common power phases 1&3 (COM1)
Throttle motor common power phases 2&4 (COM2)
OEM-G
Stock ECU being replaced
2Throttle motor power source 1 (IGM1)
3Throttle motor power source 2 (IGM2)
7Throttle motor ground 1 (PGM1)
8Throttle motor ground 2 (PGM2)
9Throttle motor common power phases 1&3 (COM1)
10Throttle motor common power phases 2&4 (COM2)
MS3PROMINI
MS3PROMINI-A
MS3PROMINI
112V+ switched power in
2+5V VREF out
3PWM out 1 / Idle
4Fuel pump out
5Injector out A
6Injector out B
7Injector out C
8Injector out D
9Injector out E
10Injector out F
11Injector out G
12Injector out H
13Analog in 1
14Analog in 2
15Analog in 3
16Analog in 4
17Spark out A
18Spark out B
19Spark out C
20Spark out D
21Sensor ground
22Power ground
23Power ground
26CLT in
27IAT in
28TPS in
29Digital switched in 1 / Flex fuel
30CKP+
31CKP-
32CMP+
33CMP-
34Digital frequency in 1 (Hall)
35Digital frequency in 2 (Hall)
12V+ switched power in
5V ref
OEM-F-19 VTEC solenoid front (VT SOLF)
OEM-A-5 Fuel pump relay (FLR1)
OEM-A-14 Injector 4 (INJ4)
OEM-A-15 Injector 5 (INJ5)
OEM-A-16 Injector 6 (INJ6)
OEM-F-20 VTEC solenoid rear (VT SOLR)
OEM-F-4 Fuel pump relay 2 (FLR2)
OEM-A-1 Injector 1 (INJ1)
OEM-A-2 Injector 2 (INJ2)
OEM-A-3 Injector 3 (INJ3)
OEM-D-9 MAP sensor
OEM-F-12 Accelerator pedal position 2 (AP2)
OEM-D-12 Throttle position sensor (TPS)
OEM-D-16 Front secondary O2 signal (O2S FS)
OEM-A-11 Ignition coil 1 (IGN COIL1)
OEM-A-24 Ignition coil 2 (IGN COIL2)
OEM-B-12 Ignition coil 3 (IGN COIL3)
OEM-B-11 Ignition coil 4 (IGN COIL4)
0V sensor
GND
GND
OEM-D-7 Engine coolant temperature (ECT)
OEM-D-8 Intake air temperature (IAT)
OEM-F-13 Accelerator pedal position 1 (AP1)
OEM-F-16 Brake switch 1 (BKSW1)
OEM-B-8 Crank position sensor 1 + (CKP 1P)
OEM-B-7 Crank position sensor 2 + (CKP 2P)
OEM-B-6 Cylinder position sensor 1 + (CYP 1P)
OEM-B-5 Cylinder position sensor 2 + (CYP 2P)
OEM-C-7 Vehicle speed sensor (VSS)
OEM-F-6 Brake switch 2 (BKSW2)
SP-0V · 11 pins
SP-GND · 7 pins
SP-5V1 · 5 pins
SP-14V · 8 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.
55 / 55 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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