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-1 Injector 1
SPEEDUINO-A-1 Injector 1
SPEEDUINO-A-5 Injector 4
SPEEDUINO-A-36 Idle 2 (3-wire idle)
SPEEDUINO-A-15 Proto area 2 (fan)
SPEEDUINO-A-37 PWM idle
SPEEDUINO-A-35 Boost
5V ref
SPEEDUINO-A-22 TPS input
SPEEDUINO-A-5 Injector 4
5V ref
PCM power feed (VPWR, fused)
0V sensor
SPEEDUINO-A-20 Inlet air temp (IAT)
SPEEDUINO-A-18 Proto area 5 (clutch)
SPEEDUINO-A-2 Injector 2
5V ref
0V sensor
SPEEDUINO-A-14 Proto area 1 (flex fuel)
SPEEDUINO-A-11 MAP sensor (0-5V)
SPEEDUINO-A-3 Injector 3
SPEEDUINO-A-19 Coolant temp (CLT)
0V sensor
0V sensor
0V sensor
SPEEDUINO-A-24 Cam input / VR2+
SPEEDUINO-A-26 VR2-
SPEEDUINO-A-3 Injector 3
SPEEDUINO-A-2 Injector 2
0V sensor
0V sensor
SPEEDUINO-A-25 Crank input / VR1+
OEM-C175E
Stock ECU being replaced
1Fuel injector driver 1 (INJ 1)
2Fuel injector driver 5 (INJ 5)
3Fuel injector driver 4 (INJ 4)
4Variable camshaft timing valve 2 (VCT2)
5Variable camshaft timing valve 1 (VCT1)
6Variable camshaft timing valve 4 (VCT4)
7Variable camshaft timing valve 3 (VCT3)
8Electronic throttle control reference (ETCREF)
10Throttle position 1 (TP1-NS)
16Fuel injector driver 8 (INJ 8)
17Buffered power supply sensors (VBPWR)
18PCM power feed (VPWR, fused)
23Electronic throttle control return (ETCRTN)
27Intake air temperature (IAT)
30Engine oil level switch (EOL)
31Fuel injector driver 6 (INJ 6)
34Voltage reference engine (VREF)
40VR sensor return (VRSRTN)
41Camshaft position bank 2 (CMP2)
44Intake manifold monitor (IMM)
46Fuel injector driver 3 (INJ 3)
47Cylinder head temperature (CHT)
49Signal return engine #2
52Knock sensor 1 bank 1 return (KS1−)
54VR sensor return (VRSRTN)
55Camshaft position bank 1 (CMP1)
56Camshaft position bank 1 exhaust (CMP1 EX)
61Fuel injector driver 7 (INJ 7)
62Fuel injector driver 2 (INJ 2)
67Knock sensor 2 bank 1 return (KS2−)
69Crankshaft position return (CKP−)
70Crankshaft position (CKP+)
APP
APP-J
APP
GND1Pedal 1 low ref
GND2Pedal 2 low ref
VCC1Pedal 1 5V supply
VCC2Pedal 2 5V supply
0V sensor
0V sensor
Pedal 1 5V supply
Pedal 2 5V supply
MAIN
MAIN-R
MAIN
INRelay contact input (battery + via main fuse)
OUTRelay contact output (switched +12V bus)
COIL+Relay coil positive (ignition-switched +12V)
COIL-Relay coil negative (ECU low-side driver)
NEW-BATT
SPEEDUINO-PWR-12V Main power (+12 V switched)
Relay coil positive (ignition-switched +12V)
SP-GND · 2 pins
SPEEDUINO
SPEEDUINO-A
SPEEDUINO
1Injector 1
2Injector 2
3Injector 3
5Injector 4
9Ground
10Ground
11MAP sensor (0-5V)
12Ground
135V
14Proto area 1 (flex fuel)
15Proto area 2 (fan)
16Proto area 3 (fuel pump)
18Proto area 5 (clutch)
19Coolant temp (CLT)
20Inlet air temp (IAT)
22TPS input
23Ground
24Cam input / VR2+
25Crank input / VR1+
26VR2-
285V
31Idle stepper 1A
32Idle stepper 1B
35Boost
36Idle 2 (3-wire idle)
37PWM idle
Fuel injector driver 5 (INJ 5) · 2 pins
Fuel injector driver 2 (INJ 2) · 2 pins
Fuel injector driver 7 (INJ 7) · 2 pins
Fuel injector driver 4 (INJ 4) · 2 pins
GND
GND
OEM-C175E-44 Intake manifold monitor (IMM)
0V sensor
5V ref
OEM-C175E-41 Camshaft position bank 2 (CMP2)
OEM-C175E-5 Variable camshaft timing valve 1 (VCT1)
NEW-FUELPUMP
OEM-C175E-30 Engine oil level switch (EOL)
OEM-C175E-47 Cylinder head temperature (CHT)
OEM-C175E-27 Intake air temperature (IAT)
OEM-C175E-10 Throttle position 1 (TP1-NS)
0V sensor
OEM-C175E-55 Camshaft position bank 1 (CMP1)
OEM-C175E-70 Crankshaft position (CKP+)
OEM-C175E-56 Camshaft position bank 1 exhaust (CMP1 EX)
5V ref
TB-J-M+ Throttle motor +
TB-J-M- Throttle motor −
OEM-C175E-7 Variable camshaft timing valve 3 (VCT3)
OEM-C175E-4 Variable camshaft timing valve 2 (VCT2)
OEM-C175E-6 Variable camshaft timing valve 4 (VCT4)
SPEEDUINO-PWR
SPEEDUINO
12VMain power (+12 V switched)
Main power (+12 V switched)
TB
TB-J
TB
M+Throttle motor +
M-Throttle motor −
GNDThrottle sensor ground
VCCThrottle 5V supply
SPEEDUINO-A-31 Idle stepper 1A
SPEEDUINO-A-32 Idle stepper 1B
0V sensor
Throttle 5V supply
SP-14V · 2 pins
◯New feed: NEW-BATT
◯New feed: NEW-KEYON
SP-5V2 · 5 pins
SP-GND · 4 pins
SP-0V · 13 pins
SP-5V1 · 5 pins
◯New feed: NEW-FUELPUMP
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.
51 / 51 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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