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
T8-C1-9 Injector 1
T8-C1-16 Injector 5
T8-C1-25 Injector 4
T8-C1-4 PWM 2
T8-C1-5 PWM 1
T8-C3-22 PWM 4
T8-C1-3 PWM 3
5V ref
T8-C2-1 Analogue 2
T8-C2-10 Analogue 1
T8-C1-23 Injector 8
5V ref
PCM power feed (VPWR, fused)
T8-C3-8 Lambda 1 VGND
T8-C3-2 Lambda 2 VGND
0V sensor
T8-C2-7 Thermistor 1
T8-C2-4 Digital 1
T8-C1-15 Injector 6
5V ref
T8-C3-7 Lambda 1 Pump Current
T8-C3-1 Lambda 2 Pump Current
0V sensor
T8-C2-2 Wheel 1
T8-C2-20 Wheel 2
T8-C3-17 Analogue 7
T8-C3-18 Analogue 8
T8-C1-34 Injector 3
T8-C2-25 Thermistor 2
T8-C2-8 Digital 2
0V sensor
T8-C3-12 Lambda 1 Nernst Voltage
T8-C3-6 Lambda 2 Nernst Voltage
0V sensor
T8-C3-31 Knock 1
0V sensor
T8-C2-22 Cam 1
T8-C2-29 Cam 2
T8-C2-11 Digital 3
T8-C1-24 Injector 7
T8-C1-17 Injector 2
0V sensor
T8-C3-32 Knock 2
0V sensor
T8-C2-12 Crank
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 2 (TP2-PS)
10Throttle position 1 (TP1-NS)
16Fuel injector driver 8 (INJ 8)
17Buffered power supply sensors (VBPWR)
18PCM power feed (VPWR, fused)
20Universal HEGO 1st reference (UREF-11)
21Universal HEGO 2nd reference (UREF-21)
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)
36Universal HEGO 2nd pump current (UO2SIP-21)
40VR sensor return (VRSRTN)
41Camshaft position bank 2 (CMP2)
42Camshaft position bank 2 exhaust (CMP2 EX)
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)
51Universal HEGO 2nd sense (UO2SN-21)
52Knock sensor 1 bank 1 return (KS1−)
53Knock sensor 1 bank 1 signal (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−)
68Knock sensor 2 bank 1 signal (KS2+)
69Crankshaft position return (CKP−)
70Crankshaft position (CKP+)
APP
APP-J
APP
GND1Pedal 1 low ref
GND2Pedal 2 low ref
SIG1Pedal position 1
SIG2Pedal position 2
VCC1Pedal 1 5V supply
VCC2Pedal 2 5V supply
0V sensor
0V sensor
T8-C2-5 Analogue 3
T8-C2-18 Analogue 5
Pedal 1 5V supply
Pedal 2 5V supply
T8
T8-C1
T8
3PWM 3
4PWM 2
5PWM 1
6Motor 1 +
7Motor 1 -
9Injector 1
13Power Ground 1
14Power Ground 2
15Injector 6
16Injector 5
17Injector 2
23Injector 8
24Injector 7
25Injector 4
31Ignition 12v In
34Injector 3
OEM-C175E-7 Variable camshaft timing valve 3 (VCT3)
OEM-C175E-4 Variable camshaft timing valve 2 (VCT2)
OEM-C175E-5 Variable camshaft timing valve 1 (VCT1)
TB-J-M+ Throttle motor +
TB-J-M- Throttle motor −
OEM-C175E-1 Fuel injector driver 1 (INJ 1)
GND
GND
OEM-C175E-31 Fuel injector driver 6 (INJ 6)
OEM-C175E-2 Fuel injector driver 5 (INJ 5)
OEM-C175E-62 Fuel injector driver 2 (INJ 2)
OEM-C175E-16 Fuel injector driver 8 (INJ 8)
OEM-C175E-61 Fuel injector driver 7 (INJ 7)
OEM-C175E-3 Fuel injector driver 4 (INJ 4)
Ignition 12v In
OEM-C175E-46 Fuel injector driver 3 (INJ 3)
T8-C2
T8
1Analogue 2
2Wheel 1
4Digital 1
5Analogue 3
6Analogue 4
7Thermistor 1
8Digital 2
95v Output
10Analogue 1
11Digital 3
12Crank
18Analogue 5
19Analogue 6
20Wheel 2
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
29Cam 2
33Sensor Ground
OEM-C175E-9 Throttle position 2 (TP2-PS)
OEM-C175E-41 Camshaft position bank 2 (CMP2)
OEM-C175E-30 Engine oil level switch (EOL)
APP-J-SIG1 Pedal position 1
TB-J-TPS1 Throttle position 1
OEM-C175E-27 Intake air temperature (IAT)
OEM-C175E-48 Oil pressure switch
5V ref
OEM-C175E-10 Throttle position 1 (TP1-NS)
OEM-C175E-57 Oil pressure switch (MTX)
OEM-C175E-70 Crankshaft position (CKP+)
APP-J-SIG2 Pedal position 2
TB-J-TPS2 Throttle position 2
OEM-C175E-42 Camshaft position bank 2 exhaust (CMP2 EX)
0V sensor
OEM-C175E-55 Camshaft position bank 1 (CMP1)
5V ref
OEM-C175E-47 Cylinder head temperature (CHT)
OEM-C175E-56 Camshaft position bank 1 exhaust (CMP1 EX)
0V sensor
T8-C3
T8
1Lambda 2 Pump Current
2Lambda 2 VGND
6Lambda 2 Nernst Voltage
7Lambda 1 Pump Current
8Lambda 1 VGND
12Lambda 1 Nernst Voltage
17Analogue 7
18Analogue 8
22PWM 4
26Permanent 12v
27Permanent 12v
31Knock 1
32Knock 2
OEM-C175E-36 Universal HEGO 2nd pump current (UO2SIP-21)
OEM-C175E-21 Universal HEGO 2nd reference (UREF-21)
OEM-C175E-51 Universal HEGO 2nd sense (UO2SN-21)
OEM-C175E-35 Universal HEGO 1st pump current (UO2SIP-11)
OEM-C175E-20 Universal HEGO 1st reference (UREF-11)
OEM-C175E-50 Universal HEGO 1st sense (UO2SN-11)
OEM-C175E-44 Intake manifold monitor (IMM)
OEM-C175E-45 Intake port deactivation valve position
OEM-C175E-6 Variable camshaft timing valve 4 (VCT4)
Permanent 12v
Permanent 12v
OEM-C175E-53 Knock sensor 1 bank 1 signal (KS1+)
OEM-C175E-68 Knock sensor 2 bank 1 signal (KS2+)
TB
TB-J
TB
M+Throttle motor +
M-Throttle motor −
GNDThrottle sensor ground
TPS1Throttle position 1
TPS2Throttle position 2
VCCThrottle 5V supply
T8-C1-6 Motor 1 +
T8-C1-7 Motor 1 -
0V sensor
T8-C2-6 Analogue 4
T8-C2-19 Analogue 6
Throttle 5V supply
SP-5V1 · 4 pins
SP-14V · 3 pins
SP-GND · 3 pins
SP-5V2 · 6 pins
SP-0V · 13 pins
◯New feed: NEW-BATT
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