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
5V ref
MS3PROMINI-A-35 Digital frequency in 2 (Hall)
MS3PROMINI-A-30 CKP+
0V sensor
MS3PROMINI-A-28 TPS in
MS3PROMINI-A-13 Analog in 1
MS3PROMINI-A-29 Digital switched in 1 / Flex fuel
MS3PROMINI-A-32 CMP+
0V sensor
MS3PROMINI-A-14 Analog in 2
MS3PROMINI-A-15 Analog in 3
MS3PROMINI-A-27 IAT in
MS3PROMINI-A-33 CMP-
0V sensor
MS3PROMINI-A-26 CLT in
0V sensor
OEM-C84
Stock ECU being replaced
1Sensor supply +5V (VCC)
4No.2 speed sensor (SP2-)
5Crank position (NE)
6Crank sensor return (NE-)
7Throttle position (VTA1)
8Manifold pressure (PIM)
9No.2 speed sensor (SP2+)
10Cam position 1 (G1)
11Cam 1 return (G1-)
12TRAC throttle position (VTA2)
13O2 sensor (OX1)
14Intake air temperature (THA)
16Cam position 2 (G2)
17Cam 2 return (G2-)
20Coolant temperature (THW)
22Sensor ground (E2)
MS3PROMINI-A-4 Fuel pump out
GND
OEM-C85
Stock ECU being replaced
2EFI main relay control (M-REL)
16Power ground (E1)
MS3PROMINI-A-3 PWM out 1 / Idle
MS3PROMINI-A-34 Digital frequency in 1 (Hall)
MS3PROMINI-A-16 Analog in 4
EFI main relay power (+B)
EFI main relay power (+B1)
OEM-C86
Stock ECU being replaced
5A/C clutch relay (ACMG)
12No.1 speed sensor (SP1)
13Cat temperature sensor (CCO)
22EFI main relay power (+B)
23EFI main relay power (+B1)
MS3PROMINI-A-5 Injector out A
MS3PROMINI-A-12 Injector out H
MS3PROMINI-A-11 Injector out G
MS3PROMINI-A-10 Injector out F
MS3PROMINI-A-6 Injector out B
MS3PROMINI-A-19 Spark out C
MS3PROMINI-A-18 Spark out B
MS3PROMINI-A-8 Injector out D
MS3PROMINI-A-9 Injector out E
MS3PROMINI-A-7 Injector out C
MS3PROMINI-A-17 Spark out A
MS3PROMINI-A-20 Spark out D
GND
GND
GND
OEM-C88
Stock ECU being replaced
3O2 heater (HT)
8Injector 3 (#30, cyl 2&6)
9Injector 2 (#20, cyl 3&5)
10Injector 1 (#10, cyl 1&4)
11A/T shift solenoid 1 (S1)
15Ignition 3 (IGT3)
16Ignition 2 (IGT2)
17A/T shift solenoid 2 (S2)
22ISC stepper coil 2 (ISCV2)
23ISC stepper coil 1 (ISCV1)
24Ignition 1 (IGT1)
26Ignition 4 (IGT4)
28Power ground (E11)
33Power ground (E02)
34Power ground (E01)
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+
32CMP+
33CMP-
34Digital frequency in 1 (Hall)
35Digital frequency in 2 (Hall)
12V+ switched power in
5V ref
OEM-C86-5 A/C clutch relay (ACMG)
OEM-C85-2 EFI main relay control (M-REL)
OEM-C88-3 O2 heater (HT)
OEM-C88-11 A/T shift solenoid 1 (S1)
OEM-C88-23 ISC stepper coil 1 (ISCV1)
OEM-C88-17 A/T shift solenoid 2 (S2)
OEM-C88-22 ISC stepper coil 2 (ISCV2)
OEM-C88-10 Injector 1 (#10, cyl 1&4)
OEM-C88-9 Injector 2 (#20, cyl 3&5)
OEM-C88-8 Injector 3 (#30, cyl 2&6)
OEM-C84-8 Manifold pressure (PIM)
OEM-C84-12 TRAC throttle position (VTA2)
OEM-C84-13 O2 sensor (OX1)
OEM-C86-13 Cat temperature sensor (CCO)
OEM-C88-24 Ignition 1 (IGT1)
OEM-C88-16 Ignition 2 (IGT2)
OEM-C88-15 Ignition 3 (IGT3)
OEM-C88-26 Ignition 4 (IGT4)
0V sensor
GND
GND
OEM-C84-20 Coolant temperature (THW)
OEM-C84-14 Intake air temperature (THA)
OEM-C84-7 Throttle position (VTA1)
OEM-C84-9 No.2 speed sensor (SP2+)
OEM-C84-5 Crank position (NE)
OEM-C84-10 Cam position 1 (G1)
OEM-C84-16 Cam position 2 (G2)
OEM-C86-12 No.1 speed sensor (SP1)
OEM-C84-4 No.2 speed sensor (SP2-)
SP-0V · 6 pins
SP-14V · 4 pins
SP-GND · 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.
42 / 42 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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