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

MAXXECUSPORT-C1-K1 INJ 1

MAXXECUSPORT-C1-M3 INJ 5

MAXXECUSPORT-C1-M2 INJ 4

MAXXECUSPORT-C1-B1 GPO 5

MAXXECUSPORT-C1-A1 GPO 4

MAXXECUSPORT-C1-A4 GPO 8/TACHO

5V ref

MAXXECUSPORT-C1-J3 AIN 3 (0-5V)

MAXXECUSPORT-C1-G2 TPS/AIN

MAXXECUSPORT-C1-K2 INJ 2

5V ref

PCM power feed (VPWR, fused)

MAXXECUSPORT-C1-F3 WBO2 VREF

0V sensor

MAXXECUSPORT-C1-F2 IAT

MAXXECUSPORT-C1-K3 DIN 1

MAXXECUSPORT-C1-L3 INJ 6

5V ref

MAXXECUSPORT-C1-G3 WBO2 IP

MAXXECUSPORT-C1-E3 GND Shield (via SP-SHD)

0V sensor

MAXXECUSPORT-C1-J4 AIN 4 (0-5V)

MAXXECUSPORT-C1-C1 AIN 5 (0-5V)

MAXXECUSPORT-C1-M1 INJ 3

MAXXECUSPORT-C1-J1 AIN 1 (temperature)

MAXXECUSPORT-C1-K4 DIN 2

0V sensor

MAXXECUSPORT-C1-F4 WBO2 VS

0V sensor

MAXXECUSPORT-C1-H4 HOME

MAXXECUSPORT-C1-D2 AIN 6 (0-5V)

MAXXECUSPORT-C1-K1 INJ 1

MAXXECUSPORT-C1-K2 INJ 2

0V sensor

MAXXECUSPORT-C1-H3 TRIGGER

MAXXECUSPORT-C1-D1 WBO2 Heater-

MAXXECUSPORT-C1-B4 GPO 1

MAXXECUSPORT-C1-L2 GPO 12/MOTOR 1+

MAXXECUSPORT-C1-L1 GPO 11/Motor 1-

MAXXECUSPORT-C1-C4 GPO 2

MAXXECUSPORT-C1-D4 GPO 3

MAXXECUSPORT-C1-A2 IGN 1

MAXXECUSPORT-C1-A3 IGN 2

MAXXECUSPORT-C1-B2 IGN 3

MAXXECUSPORT-C1-B3 IGN 4

MAXXECUSPORT-C1-C2 IGN 5

MAXXECUSPORT-C1-C3 IGN 6

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)

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)

39Crankshaft sensor shield/drain

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)

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+)

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)

92Ignition coil on plug D (COP-D)

93Ignition coil on plug A (COP-A)

MAXXECUSPORT

MAXXECUSPORT-C1

MAXXECUSPORT

A1GPO 4

A2IGN 1

A3IGN 2

A4GPO 8/TACHO

B1GPO 5

B2IGN 3

B3IGN 4

B4GPO 1

C1AIN 5 (0-5V)

C2IGN 5

C3IGN 6

C4GPO 2

D1WBO2 Heater-

D2AIN 6 (0-5V)

D4GPO 3

E3GND Shield

F2IAT

F3WBO2 VREF

F4WBO2 VS

G1+5V sensor supply

G2TPS/AIN

G3WBO2 IP

H1Sensor GND

H2Trigger GND

H3TRIGGER

H4HOME

J1AIN 1 (temperature)

J3AIN 3 (0-5V)

J4AIN 4 (0-5V)

K1INJ 1

K2INJ 2

K3DIN 1

K4DIN 2

L1GPO 11/Motor 1-

L2GPO 12/MOTOR 1+

L3INJ 6

M1INJ 3

M2INJ 4

M3INJ 5

M4+12V ECU power supply

OEM-C175E-5 Variable camshaft timing valve 1 (VCT1)

OEM-C175E-87 Ignition coil on plug G (COP-G)

OEM-C175E-88 Ignition coil on plug F (COP-F)

OEM-C175E-7 Variable camshaft timing valve 3 (VCT3)

OEM-C175E-4 Variable camshaft timing valve 2 (VCT2)

OEM-C175E-89 Ignition coil on plug E (COP-E)

OEM-C175E-90 Ignition coil on plug H (COP-H)

OEM-C175E-79 Heater O2 pre-cat 1st (HTR11)

OEM-C175E-45 Intake port deactivation valve position

OEM-C175E-92 Ignition coil on plug D (COP-D)

OEM-C175E-93 Ignition coil on plug A (COP-A)

OEM-C175E-83 Heater O2 post-cat 2nd (HTR22)

OEM-C175E-78 Heater O2 post-cat 1st (HTR12)

OEM-C175E-57 Oil pressure switch (MTX)

OEM-C175E-84 Heater O2 pre-cat 2nd (HTR21)

OEM-C175E-39 Crankshaft sensor shield/drain (via SP-SHD)

OEM-C175E-27 Intake air temperature (IAT)

OEM-C175E-20 Universal HEGO 1st reference (UREF-11)

OEM-C175E-50 Universal HEGO 1st sense (UO2SN-11)

5V ref

OEM-C175E-10 Throttle position negative slope (TP1-NS)

OEM-C175E-35 Universal HEGO 1st pump current (UO2SIP-11)

0V sensor

OEM-C175E-70 Crankshaft position (CKP+)

OEM-C175E-55 Camshaft position bank 1 (CMP1)

OEM-C175E-47 Cylinder head temperature (CHT)

OEM-C175E-9 Throttle position positive slope (TP2-PS)

OEM-C175E-44 Intake manifold monitor (IMM)

Fuel injector driver 7 (INJ 7) · 2 pins

INJ 2 · 2 pins

OEM-C175E-30 Engine oil level switch (EOL)

OEM-C175E-48 Oil pressure switch

OEM-C175E-82 Throttle actuator control motor + (TACM+)

OEM-C175E-81 Throttle actuator control motor − (TACM−)

OEM-C175E-31 Fuel injector driver 6 (INJ 6)

OEM-C175E-46 Fuel injector driver 3 (INJ 3)

OEM-C175E-3 Fuel injector driver 4 (INJ 4)

OEM-C175E-2 Fuel injector driver 5 (INJ 5)

+12V ECU power supply

SP-5V1 · 5 pins

SP-SHD · 3 pins

SP-14V · 3 pins

SP-0V · 10 pins