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

SL6-B-4 Ignition switch input

SL6-B-22 Analog input 9 (switchable 1k pull-up)

SL6-B-11 Analog input 1

SL6-B-12 Analog input 2

SL6-B-14 Analog input 4

SL6-B-21 Analog input 8 (switchable 1k pull-up)

SL6-A-23 Digital input 4

5V ref

EFI main relay (B+)

EFI main relay (B1+)

SL6-A-25 Digital input 6

SL6-B-20 Analog input 7 (switchable 1k pull-up)

SL6-B-13 Analog input 3

0V sensor

SL6-A-22 Digital input 3

SL6-A-24 Digital input 5

GND

OEM-A

Stock ECU being replaced

1Ignition switch (IGSW)

2Starter signal (STA)

4Throttle position (VTA1)

5Coolant temperature (THW)

6O2 left front (OXL1)

7EGR temperature sensor

9Diagnostic test 1 (TE1)

11Sensor supply +5V (VC)

12EFI main relay (B+)

13EFI main relay (B1+)

14Neutral start switch (NSW)

16Intake air temperature (THA)

17O2 right front (OXR1)

18Sensor ground (E2)

19Vehicle speed (SPD)

20Diagnostic test 2 (TE2)

22Power ground (E1)

SL6-B-3 EFI relay output (low side, 200 mA)

SL6-A-6 Injection channel 6

SL6-A-14 Auxiliary output 5

SL6-A-15 Auxiliary output 6

SL6-B-15 Analog input 5

SL6-B-23 Analog input 10 (switchable 1k pull-up)

SL6-B-19 Analog input 6

OEM-B

Stock ECU being replaced

4EFI main relay control (MREL)

5Check-engine lamp (W)

6Fuel pump relay (FPR)

7A/C clutch relay (ACMG)

11O2 right rear (OXR2)

19Stop light switch (BK)

24O2 left rear (OXL2)

SL6-A-20 Digital input 1

SL6-B-16 Knock 1 +

SL6-A-26 Ignition channel 1

SL6-B-7 Sync sensor +

SL6-B-5 Crank index sensor +

SL6-A-21 Digital input 2

SL6-B-24 Knock 2 +

SL6-A-27 Ignition channel 2

0V sensor

OEM-C

Stock ECU being replaced

2Igniter 1 feedback (IGF1)

3Knock sensor 1 (KNK1)

5Ignition 1 (IGT1)

7Cam sensor 1 + (G1+)

8Crank sensor + (NE+)

10Igniter 2 feedback (IGF2)

11Knock sensor 2 (KNK2)

13Ignition 2 (IGT2)

15Cam sensor ground (G-)

16Crank sensor - (NE-)

SL6-A-5 Injection channel 5

SL6-A-13 Auxiliary output 4

SL6-A-12 Auxiliary output 3

SL6-A-11 Auxiliary output 2

SL6-A-2 Injection channel 2

SL6-A-1 Injection channel 1

GND

SL6-A-10 Auxiliary output 1

SL6-A-16 Auxiliary output 7

SL6-A-17 Auxiliary output 8

SL6-A-3 Injection channel 3

SL6-A-4 Injection channel 4

GND

OEM-D

Stock ECU being replaced

5ISC stepper coil 4 (ISC4)

6ISC stepper coil 3 (ISC3)

7ISC stepper coil 2 (ISC2)

8ISC stepper coil 1 (ISC1)

11Injector 2&8 (#20)

12Injector 1&7 (#10)

13Power ground (E01)

17Cold start injector 1 (STJ1)

19O2 heater 2 (HT2)

20O2 heater 1 (HT1)

24Injector 3&5 (#40)

25Injector 4&6 (#30)

26Power ground (E02)

SL6

SL6-A

SL6

1Injection channel 1

2Injection channel 2

3Injection channel 3

4Injection channel 4

5Injection channel 5

6Injection channel 6

7–8 no data

10Auxiliary output 1

11Auxiliary output 2

12Auxiliary output 3

13Auxiliary output 4

14Auxiliary output 5

15Auxiliary output 6

16Auxiliary output 7

17Auxiliary output 8

20Digital input 1

21Digital input 2

22Digital input 3

23Digital input 4

24Digital input 5

25Digital input 6

26Ignition channel 1

27Ignition channel 2

32–33 no data

34Aux 9–10 14V supply

OEM-D-12 Injector 1&7 (#10)

OEM-D-11 Injector 2&8 (#20)

OEM-D-24 Injector 3&5 (#40)

OEM-D-25 Injector 4&6 (#30)

OEM-D-5 ISC stepper coil 4 (ISC4)

OEM-B-5 Check-engine lamp (W)

7–8 no data

OEM-D-17 Cold start injector 1 (STJ1)

OEM-D-8 ISC stepper coil 1 (ISC1)

OEM-D-7 ISC stepper coil 2 (ISC2)

OEM-D-6 ISC stepper coil 3 (ISC3)

OEM-B-6 Fuel pump relay (FPR)

OEM-B-7 A/C clutch relay (ACMG)

OEM-D-19 O2 heater 2 (HT2)

OEM-D-20 O2 heater 1 (HT1)

OEM-C-2 Igniter 1 feedback (IGF1)

OEM-C-10 Igniter 2 feedback (IGF2)

OEM-A-19 Vehicle speed (SPD)

OEM-A-9 Diagnostic test 1 (TE1)

OEM-A-20 Diagnostic test 2 (TE2)

OEM-A-14 Neutral start switch (NSW)

OEM-C-5 Ignition 1 (IGT1)

OEM-C-13 Ignition 2 (IGT2)

32–33 no data

Aux 9–10 14V supply

SL6-B

SL6

1ECU 14V supply

2Sensor supply Vref1 5.0V

3EFI relay output (low side, 200 mA)

4Ignition switch input

5Crank index sensor +

6Crank index sensor −

7Sync sensor +

8Sync sensor −

10Analog sensor 0V reference

11Analog input 1

12Analog input 2

13Analog input 3

14Analog input 4

15Analog input 5

16Knock 1 +

18ECU ground

19Analog input 6

20Analog input 7 (switchable 1k pull-up)

21Analog input 8 (switchable 1k pull-up)

22Analog input 9 (switchable 1k pull-up)

23Analog input 10 (switchable 1k pull-up)

24Knock 2 +

26ECU ground

29–30 no data

ECU 14V supply

5V ref

OEM-B-4 EFI main relay control (MREL)

OEM-A-1 Ignition switch (IGSW)

OEM-C-8 Crank sensor + (NE+)

SP-0V · 3 pins

OEM-C-7 Cam sensor 1 + (G1+)

SP-0V · 3 pins

0V sensor

OEM-A-4 Throttle position (VTA1)

OEM-A-5 Coolant temperature (THW)

OEM-A-17 O2 right front (OXR1)

OEM-A-6 O2 left front (OXL1)

OEM-B-11 O2 right rear (OXR2)

OEM-C-3 Knock sensor 1 (KNK1)

GND

OEM-B-24 O2 left rear (OXL2)

OEM-A-16 Intake air temperature (THA)

OEM-A-7 EGR temperature sensor

OEM-A-2 Starter signal (STA)

OEM-B-19 Stop light switch (BK)

OEM-C-11 Knock sensor 2 (KNK2)

GND

29–30 no data

SP-14V · 5 pins

SP-0V · 7 pins

SP-GND · 6 pins