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.
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Stock ECU being replaced
T4-C1-9 Injector 1
T4-C1-9 Injector 1
T4-C1-25 Injector 4
T4-C3-23 PWM 5
T4-C3-22 PWM 4
T4-C3-25 PWM 7
T4-C3-24 PWM 6
5V ref
T4-C2-1 Analogue 2
T4-C2-10 Analogue 1
T4-C1-25 Injector 4
5V ref
PCM power feed (VPWR, fused)
T4-C3-8 Lambda 1 VGND
0V sensor
T4-C2-7 Thermistor 1
T4-C2-4 Digital 1
T4-C1-17 Injector 2
5V ref
T4-C3-7 Lambda 1 Pump Current
0V sensor
T4-C2-5 Analogue 3
T4-C2-6 Analogue 4
T4-C1-34 Injector 3
T4-C2-25 Thermistor 2
T4-C2-14 Digital 4
0V sensor
T4-C3-12 Lambda 1 Nernst Voltage
0V sensor
0V sensor
T4-C2-22 Cam 1
T4-C2-2 Wheel 1
T4-C2-15 Digital 5
T4-C1-34 Injector 3
T4-C1-17 Injector 2
0V sensor
0V sensor
T4-C2-12 Crank
T4-C3-10 PWM 8
T4-C3-9 Lambda 1 Heater Negative
T4-C1-5 PWM 1
T4-C1-7 Motor 1 -
T4-C1-6 Motor 1 +
T4-C1-4 PWM 2
T4-C1-3 PWM 3
T4-C1-10 Coil 1
T4-C1-18 Coil 2
T4-C1-1 Coil 3
T4-C1-26 Coil 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)
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)
9Throttle position positive slope (TP2-PS)
10Throttle position negative slope (TP1-NS)
16Fuel injector driver 8 (INJ 8)
17Buffered power supply sensors (VBPWR)
18PCM power feed (VPWR, fused)
20Universal HEGO 1st reference (UREF-11)
23Electronic throttle control return (ETCRTN)
27Intake air temperature (IAT)
30Engine oil level switch (EOL)
31Fuel injector driver 6 (INJ 6)
34Voltage reference engine (VREF)
35Universal HEGO 1st pump current (UO2SIP-11)
40VR sensor return (VRSRTN)
44Intake manifold monitor (IMM)
45Intake port deactivation valve position
46Fuel injector driver 3 (INJ 3)
47Cylinder head temperature (CHT)
48Oil pressure switch
49Signal return engine #2
50Universal HEGO 1st sense (UO2SN-11)
52Knock sensor 1 bank 1 return (KS1−)
54VR sensor return (VRSRTN)
55Camshaft position bank 1 (CMP1)
56Camshaft position bank 1 exhaust (CMP1 EX)
57Oil pressure switch (MTX)
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+)
71Canister purge valve (CANP)
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)
T4
T4-C1
T4
1Coil 3
3PWM 3
4PWM 2
5PWM 1
6Motor 1 +
7Motor 1 -
9Injector 1
10Coil 1
17Injector 2
18Coil 2
25Injector 4
26Coil 4
31Ignition 12v In
34Injector 3
OEM-C175E-89 Ignition coil on plug E (COP-E)
OEM-C175E-84 Heater O2 pre-cat 2nd (HTR21)
OEM-C175E-83 Heater O2 post-cat 2nd (HTR22)
OEM-C175E-79 Heater O2 pre-cat 1st (HTR11)
OEM-C175E-82 Throttle actuator control motor + (TACM+)
OEM-C175E-81 Throttle actuator control motor − (TACM−)
Fuel injector driver 1 (INJ 1) · 2 pins
OEM-C175E-87 Ignition coil on plug G (COP-G)
Injector 2 · 2 pins
OEM-C175E-88 Ignition coil on plug F (COP-F)
Fuel injector driver 4 (INJ 4) · 2 pins
OEM-C175E-90 Ignition coil on plug H (COP-H)
Ignition 12v In
Fuel injector driver 7 (INJ 7) · 2 pins
T4-C2
T4
1Analogue 2
2Wheel 1
4Digital 1
5Analogue 3
6Analogue 4
7Thermistor 1
10Analogue 1
12Crank
14Digital 4
15Digital 5
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
33Sensor Ground
OEM-C175E-9 Throttle position positive slope (TP2-PS)
OEM-C175E-56 Camshaft position bank 1 exhaust (CMP1 EX)
OEM-C175E-30 Engine oil level switch (EOL)
OEM-C175E-44 Intake manifold monitor (IMM)
OEM-C175E-45 Intake port deactivation valve position
OEM-C175E-27 Intake air temperature (IAT)
OEM-C175E-10 Throttle position negative slope (TP1-NS)
OEM-C175E-70 Crankshaft position (CKP+)
OEM-C175E-48 Oil pressure switch
OEM-C175E-57 Oil pressure switch (MTX)
0V sensor
OEM-C175E-55 Camshaft position bank 1 (CMP1)
5V ref
OEM-C175E-47 Cylinder head temperature (CHT)
0V sensor
T4-C3
T4
7Lambda 1 Pump Current
8Lambda 1 VGND
9Lambda 1 Heater Negative
10PWM 8
12Lambda 1 Nernst Voltage
22PWM 4
23PWM 5
24PWM 6
25PWM 7
OEM-C175E-35 Universal HEGO 1st pump current (UO2SIP-11)
OEM-C175E-20 Universal HEGO 1st reference (UREF-11)
OEM-C175E-78 Heater O2 post-cat 1st (HTR12)
OEM-C175E-71 Canister purge valve (CANP)
OEM-C175E-50 Universal HEGO 1st sense (UO2SN-11)
OEM-C175E-5 Variable camshaft timing valve 1 (VCT1)
OEM-C175E-4 Variable camshaft timing valve 2 (VCT2)
OEM-C175E-7 Variable camshaft timing valve 3 (VCT3)
OEM-C175E-6 Variable camshaft timing valve 4 (VCT4)
SP-14V · 3 pins
SP-5V1 · 5 pins
SP-0V · 10 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.