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
SPEEDUINO-A-16 Proto area 3 (fuel pump)
SPEEDUINO-A-37 PWM idle
SPEEDUINO-A-1 Injector 1
SPEEDUINO-A-2 Injector 2
SPEEDUINO-A-5 Injector 4
GND
SPEEDUINO-A-31 Idle stepper 1A
SPEEDUINO-A-32 Idle stepper 1B
SPEEDUINO-A-21 O2 sensor
GND
SPEEDUINO-A-25 Crank input / VR1+
SPEEDUINO-A-24 Cam input / VR2+
SPEEDUINO-A-8 Ignition 4
SPEEDUINO-A-15 Proto area 2 (fan)
0V sensor
SPEEDUINO-A-35 Boost
SPEEDUINO-A-3 Injector 3
SPEEDUINO-A-2 Injector 2
SPEEDUINO-A-1 Injector 1
GND
SPEEDUINO-A-38 VVT
SPEEDUINO-A-36 Idle 2 (3-wire idle)
0V sensor
SPEEDUINO-A-14 Proto area 1 (flex fuel)
0V sensor
0V sensor
SPEEDUINO-A-17 Proto area 4 (tachometer)
SPEEDUINO-A-7 Ignition 1
SPEEDUINO-A-34 Ignition 2
SPEEDUINO-A-33 Ignition 3
GND
5V ref
0V sensor
SPEEDUINO-A-22 TPS input
SPEEDUINO-A-20 Inlet air temp (IAT)
SPEEDUINO-A-19 Coolant temp (CLT)
OEM-X
Stock ECU being replaced
1Fuel pump relay control
2Idle speed control valve (close winding)
3Injector cylinder 5
4Injector cylinder 6
5Injector cylinder 4
6Ground (injector output stages)
7VANOS intake camshaft solenoid
8Check engine light (MIL)
13O2 sensor signal
15Ground
16Crank position sensor (+)
17Camshaft position sensor (Hall)
23Ignition coil cylinder 4
27Main relay control
28Ground (electronics + sensor shielding)
29Idle speed control valve (open winding)
31Injector cylinder 3
32Injector cylinder 2
33Injector cylinder 1
34Ground (output stages)
36Evap purge solenoid
38O2 sensor heater relay control
40O2 sensor signal ground
42Vehicle speed signal
43Crank position sensor (-)
44Sensor ground (IAT/ECT/TPS)
47Tachometer output
50Ignition coil cylinder 1
51Ignition coil cylinder 2
52Ignition coil cylinder 3
55Ground (ignition)
59+5V sensor supply
71Knock sensor ground/shield
73Throttle position (TPS)
77Intake air temperature (IAT)
78Engine coolant temperature (ECT)
SPEEDUINO
SPEEDUINO-A
SPEEDUINO
1Injector 1
2Injector 2
3Injector 3
5Injector 4
7Ignition 1
8Ignition 4
9Ground
10Ground
12Ground
135V
14Proto area 1 (flex fuel)
15Proto area 2 (fan)
16Proto area 3 (fuel pump)
17Proto area 4 (tachometer)
19Coolant temp (CLT)
20Inlet air temp (IAT)
21O2 sensor
22TPS input
23Ground
24Cam input / VR2+
25Crank input / VR1+
31Idle stepper 1A
32Idle stepper 1B
33Ignition 3
34Ignition 2
35Boost
36Idle 2 (3-wire idle)
37PWM idle
38VVT
Injector cylinder 1 · 2 pins
Injector 2 · 2 pins
OEM-X-31 Injector cylinder 3
OEM-X-5 Injector cylinder 4
OEM-X-50 Ignition coil cylinder 1
OEM-X-23 Ignition coil cylinder 4
GND
GND
0V sensor
5V ref
OEM-X-42 Vehicle speed signal
OEM-X-27 Main relay control
OEM-X-1 Fuel pump relay control
OEM-X-47 Tachometer output
OEM-X-78 Engine coolant temperature (ECT)
OEM-X-77 Intake air temperature (IAT)
OEM-X-13 O2 sensor signal
OEM-X-73 Throttle position (TPS)
0V sensor
OEM-X-17 Camshaft position sensor (Hall)
OEM-X-16 Crank position sensor (+)
OEM-X-7 VANOS intake camshaft solenoid
OEM-X-8 Check engine light (MIL)
OEM-X-52 Ignition coil cylinder 3
OEM-X-51 Ignition coil cylinder 2
OEM-X-29 Idle speed control valve (open winding)
OEM-X-38 O2 sensor heater relay control
OEM-X-2 Idle speed control valve (close winding)
OEM-X-36 Evap purge solenoid
SP-GND · 7 pins
SP-0V · 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.
40 / 40 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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