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-38 VVT
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+
SPEEDUINO-A-15 Proto area 2 (fan)
SPEEDUINO-A-36 Idle 2 (3-wire idle)
SPEEDUINO-A-32 Idle stepper 1B
SPEEDUINO-A-31 Idle stepper 1A
SPEEDUINO-A-35 Boost
SPEEDUINO-A-37 PWM idle
SPEEDUINO-A-7 Ignition 1
SPEEDUINO-A-34 Ignition 2
SPEEDUINO-A-33 Ignition 3
SPEEDUINO-A-8 Ignition 4
OEM-C175E
Stock ECU being replaced
1Fuel injector driver 1 (INJ 1)
2Fuel injector driver 5 (INJ 5)
3Fuel injector driver 4 (INJ 4)
5Variable camshaft timing valve 1 (VCT1)
8Electronic throttle control reference (ETCREF)
10Throttle position negative slope (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+)
78Heater O2 post-cat 1st (HTR12)
79Heater O2 pre-cat 1st (HTR11)
81Throttle actuator control motor − (TACM−)
82Throttle actuator control motor + (TACM+)
83Heater O2 post-cat 2nd (HTR22)
84Heater O2 pre-cat 2nd (HTR21)
87Ignition coil on plug G (COP-G)
88Ignition coil on plug F (COP-F)
89Ignition coil on plug E (COP-E)
90Ignition coil on plug H (COP-H)
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
SPEEDUINO
SPEEDUINO-A
SPEEDUINO
1Injector 1
2Injector 2
3Injector 3
5Injector 4
7Ignition 1
8Ignition 4
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-
31Idle stepper 1A
32Idle stepper 1B
33Ignition 3
34Ignition 2
35Boost
36Idle 2 (3-wire idle)
37PWM idle
38VVT
Injector 1 · 2 pins
Fuel injector driver 6 (INJ 6) · 2 pins
Fuel injector driver 7 (INJ 7) · 2 pins
Injector 4 · 2 pins
OEM-C175E-87 Ignition coil on plug G (COP-G)
OEM-C175E-90 Ignition coil on plug H (COP-H)
OEM-C175E-44 Intake manifold monitor (IMM)
0V sensor
5V ref
OEM-C175E-41 Camshaft position bank 2 (CMP2)
OEM-C175E-78 Heater O2 post-cat 1st (HTR12)
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 negative slope (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)
OEM-C175E-82 Throttle actuator control motor + (TACM+)
OEM-C175E-81 Throttle actuator control motor − (TACM−)
OEM-C175E-89 Ignition coil on plug E (COP-E)
OEM-C175E-88 Ignition coil on plug F (COP-F)
OEM-C175E-83 Heater O2 post-cat 2nd (HTR22)
OEM-C175E-79 Heater O2 pre-cat 1st (HTR11)
OEM-C175E-84 Heater O2 pre-cat 2nd (HTR21)
OEM-C175E-5 Variable camshaft timing valve 1 (VCT1)
SPEEDUINO-PWR
SPEEDUINO
12VMain power (+12 V switched)
Main power (+12 V switched)
◯New feed: NEW-BATT
◯New feed: NEW-KEYON
SP-GND · 2 pins
SP-14V · 2 pins
SP-5V1 · 5 pins
SP-0V · 10 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.
47 / 47 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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