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
MS3PROEVOHC-B-19 Digital switched 12V in
MS3PROEVOHC-C-11 Digital switched in 4
MS3PROEVOHC-A-9 TPS in
MS3PROEVOHC-A-11 CLT in
MS3PROEVOHC-A-19 Analog in 1
MS3PROEVOHC-A-22 Analog In 4
MS3PROEVOHC-A-32 Digital switched in 1
5V ref
EFI main relay (B+)
EFI main relay (B1+)
MS3PROEVOHC-B-29 Digital switched in 3
MS3PROEVOHC-A-10 MAT in
MS3PROEVOHC-A-25 O2 in
0V sensor
MS3PROEVOHC-B-21 Digital frequency in 3 (unconditioned)
MS3PROEVOHC-B-20 Digital switched in 2
GND
OEM-A
Stock ECU being replaced
1Ignition switch (IGSW)
2Starter signal (STA)
4Throttle position (VTA1)
5Coolant temperature (THW)
6O2 left front (OXL1)
7EGR temperature sensor
9Diagnostic test 1 (TE1)
11Sensor supply +5V (VC)
12EFI main relay (B+)
13EFI main relay (B1+)
14Neutral start switch (NSW)
16Intake air temperature (THA)
17O2 right front (OXR1)
18Sensor ground (E2)
19Vehicle speed (SPD)
20Diagnostic test 2 (TE2)
22Power ground (E1)
MS3PROEVOHC-A-28 Fuel pump relay out
MS3PROEVOHC-A-5 High current out 3
MS3PROEVOHC-A-14 PWM / Idle Out 1
MS3PROEVOHC-C-4 Digital out 1
MS3PROEVOHC-B-11 Injector out G
MS3PROEVOHC-A-20 Analog in 2
MS3PROEVOHC-C-10 Digital switched in 5
MS3PROEVOHC-B-22 Digital Frequency in 3 (VR+)
MS3PROEVOHC-B-23 Digital Frequency In 3 (VR−)
MS3PROEVOHC-A-21 Analog in 3
OEM-B
Stock ECU being replaced
4EFI main relay control (MREL)
5Check-engine lamp (W)
6Fuel pump relay (FPR)
7A/C clutch relay (ACMG)
8Fuel pump control (FC)
11O2 right rear (OXR2)
19Stop light switch (BK)
20A/T kickdown switch (KD)
23A/C request (AC)
24O2 left rear (OXL2)
MS3PROEVOHC-A-23 Analog In 5
MS3PROEVOHC-B-28 Digital frequency in 1 (unconditioned)
MS3PROEVOHC-A-31 Knock in 1
MS3PROEVOHC-B-13 Spark out G
MS3PROEVOHC-B-34 Digital Frequency in 1 (VR+)
MS3PROEVOHC-A-26 CMP+
MS3PROEVOHC-A-6 CKP+
MS3PROEVOHC-B-17 Digital frequency in 2 (Hall)
MS3PROEVOHC-A-7 Knock In 2
MS3PROEVOHC-B-14 Spark out E
0V sensor
0V sensor
OEM-C
Stock ECU being replaced
1TPS idle switch (IDL)
2Igniter 1 feedback (IGF1)
3Knock sensor 1 (KNK1)
5Ignition 1 (IGT1)
6Cam sensor 2 + (G2+)
7Cam sensor 1 + (G1+)
8Crank sensor + (NE+)
10Igniter 2 feedback (IGF2)
11Knock sensor 2 (KNK2)
13Ignition 2 (IGT2)
15Cam sensor ground (G-)
16Crank sensor - (NE-)
MS3PROEVOHC-B-4 Injector out C
MS3PROEVOHC-A-2 High current out 2
MS3PROEVOHC-A-1 High current out 1
MS3PROEVOHC-C-1 PWM out 5
MS3PROEVOHC-C-2 PWM out 4
MS3PROEVOHC-A-4 Injector out I
MS3PROEVOHC-A-3 Injector out J
GND
MS3PROEVOHC-A-30 PWM out 3
MS3PROEVOHC-A-29 PWM out 2
MS3PROEVOHC-C-3 Digital out 2
MS3PROEVOHC-B-12 Injector out H
MS3PROEVOHC-B-2 Injector out B
MS3PROEVOHC-B-1 Injector out A
MS3PROEVOHC-B-10 Injector out F
GND
OEM-D
Stock ECU being replaced
4Cold start injector (STJ)
5ISC stepper coil 4 (ISC4)
6ISC stepper coil 3 (ISC3)
7ISC stepper coil 2 (ISC2)
8ISC stepper coil 1 (ISC1)
11Injector 2&8 (#20)
12Injector 1&7 (#10)
13Power ground (E01)
17Cold start injector 1 (STJ1)
19O2 heater 2 (HT2)
20O2 heater 1 (HT1)
21EGR solenoid
22Fuel pressure-up VSV (PR)
24Injector 3&5 (#40)
25Injector 4&6 (#30)
26Power ground (E02)
MS3PROEVOHC
MS3PROEVOHC-A
MS3PROEVOHC
1High current out 1
2High current out 2
3Injector out J
4Injector out I
5High current out 3
6CKP+
7Knock In 2
85V+ VREF out
9TPS in
10MAT in
11CLT in
13Logic Ground
14PWM / Idle Out 1
15CKP−
18Sensor return
19Analog in 1
20Analog in 2
21Analog in 3
22Analog In 4
23Analog In 5
25O2 in
26CMP+
27CMP−
28Fuel pump relay out
29PWM out 2
30PWM out 3
31Knock in 1
32Digital switched in 1
3512V+ switched power in
OEM-D-6 ISC stepper coil 3 (ISC3)
OEM-D-5 ISC stepper coil 4 (ISC4)
OEM-D-12 Injector 1&7 (#10)
OEM-D-11 Injector 2&8 (#20)
OEM-B-5 Check-engine lamp (W)
OEM-C-8 Crank sensor + (NE+)
OEM-C-11 Knock sensor 2 (KNK2)
5V ref
OEM-A-4 Throttle position (VTA1)
OEM-A-16 Intake air temperature (THA)
OEM-A-5 Coolant temperature (THW)
0V sensor
OEM-B-6 Fuel pump relay (FPR)
SP-0V · 3 pins
0V sensor
OEM-A-6 O2 left front (OXL1)
OEM-B-11 O2 right rear (OXR2)
OEM-B-24 O2 left rear (OXL2)
OEM-A-7 EGR temperature sensor
OEM-C-1 TPS idle switch (IDL)
OEM-A-17 O2 right front (OXR1)
OEM-C-7 Cam sensor 1 + (G1+)
SP-0V · 3 pins
OEM-B-4 EFI main relay control (MREL)
OEM-D-19 O2 heater 2 (HT2)
OEM-D-17 Cold start injector 1 (STJ1)
OEM-C-3 Knock sensor 1 (KNK1)
OEM-A-9 Diagnostic test 1 (TE1)
12V+ switched power in
MS3PROEVOHC-B
MS3PROEVOHC
1Injector out A
2Injector out B
3Ground
4Injector out C
5Ground
7Ground
9Ground
10Injector out F
11Injector out G
12Injector out H
13Spark out G
14Spark out E
17Digital frequency in 2 (Hall)
19Digital switched 12V in
20Digital switched in 2
21Digital frequency in 3 (unconditioned)
22Digital Frequency in 3 (VR+)
23Digital Frequency In 3 (VR−)
28Digital frequency in 1 (unconditioned)
29Digital switched in 3
34Digital Frequency in 1 (VR+)
35Digital Frequency in 1 (VR−)
OEM-D-24 Injector 3&5 (#40)
OEM-D-22 Fuel pressure-up VSV (PR)
GND
OEM-D-4 Cold start injector (STJ)
GND
GND
GND
OEM-D-25 Injector 4&6 (#30)
OEM-B-8 Fuel pump control (FC)
OEM-D-21 EGR solenoid
OEM-C-5 Ignition 1 (IGT1)
OEM-C-13 Ignition 2 (IGT2)
OEM-C-10 Igniter 2 feedback (IGF2)
OEM-A-1 Ignition switch (IGSW)
OEM-A-20 Diagnostic test 2 (TE2)
OEM-A-19 Vehicle speed (SPD)
OEM-B-20 A/T kickdown switch (KD)
OEM-B-23 A/C request (AC)
OEM-C-2 Igniter 1 feedback (IGF1)
OEM-A-14 Neutral start switch (NSW)
OEM-C-6 Cam sensor 2 + (G2+)
SP-0V · 3 pins
MS3PROEVOHC-C
MS3PROEVOHC
1PWM out 5
2PWM out 4
3Digital out 2
4Digital out 1
10Digital switched in 5
11Digital switched in 4
17Sensor return
18Sensor return
19Sensor return
20Sensor return
21Sensor return
OEM-D-7 ISC stepper coil 2 (ISC2)
OEM-D-8 ISC stepper coil 1 (ISC1)
OEM-D-20 O2 heater 1 (HT1)
OEM-B-7 A/C clutch relay (ACMG)
OEM-B-19 Stop light switch (BK)
OEM-A-2 Starter signal (STA)
0V sensor
0V sensor
0V sensor
0V sensor
0V sensor
SP-14V · 4 pins
SP-GND · 8 pins
SP-0V · 14 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.
70 / 70 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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