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-A-32 Digital switched in 1
MS3PROEVOHC-A-25 O2 in
MS3PROEVOHC-A-28 Fuel pump relay out
MS3PROEVOHC-A-31 Knock in 1
0V sensor
0V sensor
MS3PROEVOHC-A-16 Ground Shield Drain (via SP-SHD)
MS3PROEVOHC-A-10 MAT in
MS3PROEVOHC-A-11 CLT in
MS3PROEVOHC-B-20 Digital switched in 2
MS3PROEVOHC-A-3 Injector out J
GND
ECU power (control-unit relay)
MS3PROEVOHC-B-29 Digital switched in 3
5V ref
MS3PROEVOHC-A-26 CMP+
GND
MS3PROEVOHC-A-19 Analog in 1
MS3PROEVOHC-A-14 PWM / Idle Out 1
MS3PROEVOHC-C-4 Digital out 1
MS3PROEVOHC-B-13 Spark out G
OEM-A
Stock ECU being replaced
1Starter signal (term 50)
2Oxygen (lambda) sensor signal
3Fuel pump relay control
4Knock sensor signal
5Knock sensor return
6Sensor ground (CTS/Hall/AFM/throttle)
7Knock sensor shield
9Intake air temperature sensor
10Coolant temperature sensor
11Idle/WOT throttle switch
12Injector driver (batch, all 4)
13Ground
14ECU power (control-unit relay)
16A/C compressor signal
17AFM potentiometer supply
18Hall sender signal (engine speed)
19Ground
21AFM signal
22Idle stabilizer valve coil 1
23Idle stabilizer valve coil 2
25Ignition timing signal to TCI
MS3PROEVOHC
MS3PROEVOHC-A
MS3PROEVOHC
3Injector out J
85V+ VREF out
10MAT in
11CLT in
13Logic Ground
14PWM / Idle Out 1
16Ground Shield Drain
18Sensor return
19Analog in 1
25O2 in
26CMP+
27CMP−
28Fuel pump relay out
31Knock in 1
32Digital switched in 1
3512V+ switched power in
OEM-A-12 Injector driver (batch, all 4)
5V ref
OEM-A-9 Intake air temperature sensor
OEM-A-10 Coolant temperature sensor
0V sensor
OEM-A-22 Idle stabilizer valve coil 1
OEM-A-7 Knock sensor shield (via SP-SHD)
0V sensor
OEM-A-21 AFM signal
OEM-A-2 Oxygen (lambda) sensor signal
OEM-A-18 Hall sender signal (engine speed)
SP-0V · 2 pins
OEM-A-3 Fuel pump relay control
OEM-A-4 Knock sensor signal
OEM-A-1 Starter signal (term 50)
12V+ switched power in
MS3PROEVOHC-B
MS3PROEVOHC
3Ground
5Ground
7Ground
9Ground
13Spark out G
20Digital switched in 2
29Digital switched in 3
GND
GND
GND
GND
OEM-A-25 Ignition timing signal to TCI
OEM-A-11 Idle/WOT throttle switch
OEM-A-16 A/C compressor signal
MS3PROEVOHC-C
MS3PROEVOHC
4Digital out 1
17Sensor return
18Sensor return
19Sensor return
20Sensor return
21Sensor return
OEM-A-23 Idle stabilizer valve coil 2
0V sensor
0V sensor
0V sensor
0V sensor
0V sensor
SP-SHD · 3 pins
SP-14V · 3 pins
SP-GND · 7 pins
SP-0V · 11 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.
35 / 35 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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