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

GND

0V sensor

ME221-C1-39 LOW SIDE 6

ME221-C1-74 LOW SIDE 3

ME221-C1-4 INJECTOR 2

ME221-C1-63 INJECTOR 1

ME221-C1-3 INJECTOR 4

ME221-C1-33 INJECTOR 3

ME221-C1-4 INJECTOR 2

ME221-C1-63 INJECTOR 1

ME221-C1-7 DIG_IN 2

ME221-C1-23 CAM A VR-

ME221-C1-22 CAM A VR+

ME221-C1-80 CRANK VR+

ME221-C1-42 LOW SIDE RELAY 12

ME221-C1-37 LOW SIDE RELAY 11

ME221-C1-69 LOW SIDE 5

ME221-C1-44 LOW SIDE 4

5V ref

ME221-C1-56 ANA VOLT 2

ME221-C1-86 ANA TEMP 1

ME221-C1-17 ANA VOLT 3

ME221-C1-18 ANA VOLT 4

ME221-C1-53 KNOCK 1 SIGNAL

ME221-C1-32 COIL 1

ME221-C1-26 ANA VOLT 1

0V sensor

GND

OEM-E9

Stock ECU being replaced

4Power ground (E11)

7Distributor ground (G-)

9A/T shift solenoid 2 (S2)

10A/T shift solenoid 1 (S1)

15Injector 6 (#60, rear)

16Injector 5 (#50)

17Injector 4 (#40)

18Injector 3 (#30)

19Injector 2 (#20)

20Injector 1 (#10, front)

23No.2 speed sensor (SP2+)

25Cam position 2 (G2)

26Cam position 1 (G1)

27Crank position (NE)

32ISC stepper coil 4 (ISC4)

33ISC stepper coil 3 (ISC3)

34ISC stepper coil 2 (ISC2)

35ISC stepper coil 1 (ISC1)

41Sensor supply +5V (VCC)

43Throttle position (VTA1)

44Coolant temperature (THW)

47O2 sensor 2 (OX2, rear bank)

48O2 sensor 1 (OX1, front bank)

50Knock sensor 1 (KNK1, front)

57Igniter trigger (IGT)

62Manifold pressure (PIM)

65Sensor ground (E2)

69Power ground (E1)

79Power ground (E02)

80Power ground (E01)

ME221-C1-6 DIG_IN 1

ME221-C1-43 LOW SIDE RELAY 14

ME221-C1-16 LSU HEATER -VE

ME221-C1-72 LOW SIDE RELAY 13

ME221-C1-73 LOW SIDE 1

ME221-C1-12 LOW SIDE 2

ME221-C1-57 ANA TEMP 2

EFI main relay power (+B)

EFI main relay power (+B1)

OEM-E10

Stock ECU being replaced

2No.1 speed sensor (SP1)

5Cat-temp warning light (EGW)

6Check-engine light (W)

22Fuel pump control (FPC)

23A/C clutch relay (ACMG)

24EFI main relay control (M-REL)

29Cat temperature sensor (CCO)

31EFI main relay power (+B)

32EFI main relay power (+B1)

ME221

ME221-C1

ME221

3INJECTOR 4

4INJECTOR 2

6DIG_IN 1

7DIG_IN 2

10GROUND CHASSIS

12LOW SIDE 2

15IGN +12V

16LSU HEATER -VE

17ANA VOLT 3

18ANA VOLT 4

22CAM A VR+

23CAM A VR-

26ANA VOLT 1

32COIL 1

33INJECTOR 3

37LOW SIDE RELAY 11

39LOW SIDE 6

42LOW SIDE RELAY 12

43LOW SIDE RELAY 14

44LOW SIDE 4

455V REF

52SENSORS GROUND

53KNOCK 1 SIGNAL

56ANA VOLT 2

57ANA TEMP 2

61GROUND

63INJECTOR 1

64VBAT

69LOW SIDE 5

72LOW SIDE RELAY 13

73LOW SIDE 1

74LOW SIDE 3

80CRANK VR+

84Sensor Ground

86ANA TEMP 1

89GROUND

90GROUND

OEM-E9-17 Injector 4 (#40)

Injector 2 (#20) · 2 pins

OEM-E10-2 No.1 speed sensor (SP1)

OEM-E9-23 No.2 speed sensor (SP2+)

GND

OEM-E10-24 EFI main relay control (M-REL)

IGN +12V

OEM-E10-6 Check-engine light (W)

OEM-E9-47 O2 sensor 2 (OX2, rear bank)

OEM-E9-48 O2 sensor 1 (OX1, front bank)

OEM-E9-26 Cam position 1 (G1)

OEM-E9-25 Cam position 2 (G2)

OEM-E9-62 Manifold pressure (PIM)

OEM-E9-57 Igniter trigger (IGT)

OEM-E9-18 Injector 3 (#30)

OEM-E9-33 ISC stepper coil 3 (ISC3)

OEM-E9-9 A/T shift solenoid 2 (S2)

OEM-E9-32 ISC stepper coil 4 (ISC4)

OEM-E10-5 Cat-temp warning light (EGW)

OEM-E9-35 ISC stepper coil 1 (ISC1)

5V ref

0V sensor

OEM-E9-50 Knock sensor 1 (KNK1, front)

OEM-E9-43 Throttle position (VTA1)

OEM-E10-29 Cat temperature sensor (CCO)

GND

Injector 1 (#10, front) · 2 pins

VBAT

OEM-E9-34 ISC stepper coil 2 (ISC2)

OEM-E10-22 Fuel pump control (FPC)

OEM-E10-23 A/C clutch relay (ACMG)

OEM-E9-10 A/T shift solenoid 1 (S1)

OEM-E9-27 Crank position (NE)

0V sensor

OEM-E9-44 Coolant temperature (THW)

GND

SP-0V · 5 pins

SP-GND · 9 pins

SP-14V · 5 pins