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Ford KA MK2 / Fiat 500 IAW 5SF9 ECU Pinout

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Hiya,

I've been trying to find the pinout for the engine and vehicle side harnesses that go to the ECU for a while now as I'm building a Speeduino ECU and found Spanish documentation with sensor specs etc for the IAW 5SF9 ECU in the Ford KA MK2 (Same as fiat 500 1.2l) which I have translated to English with a pdf translator website, I've attached the English translated and Spanish documentation and a picture of the ECU with the pinout below.

Not sure who else this will help but enjoy 🙂

(A) CONNECTOR FOR VEHICLE SIDE WIRING
1. Not connected
2. Accelerator pedal sensor power 1
3. Supply of accelerator pedal sensor 2/air conditioning linear pressure switch
4. Not connected
5. Air conditioning linear pressure switch signal
6. Not connected
7. Not connected
8. Not connected
9. Not connected
10. K serial line
11. Not connected
12. Not connected
13. Not connected
14. Brake pedal switch
15. Ground accelerator pedal sensor 2 / linear air conditioning pressure switch
16. Start switch
17. Motor control system remote switch
18. Not connected
19. Not connected
20. Not connected
21. Not connected
22. Not connected
23. Air conditioning compressor control button
24. Not connected
25. Not connected
26. Not connected
27. Not connected
28. Not connected
29. Not connected
30. Not connected
31. Not connected
32. Not connected
33. Line C- CAN Low
34. C-CAN H line
35. Not connected
36. Not connected
37. Not connected
38. Potentiometer signal 2 accelerator pedal
39. Not connected
40. Not connected
41. Not connected
42. Not connected
43. Not connected
44. Not connected
45. Ground of potentiometer 1 accelerator pedal
46. Not connected
47. Fuse control unit (F17)
48. Fuse control unit (F17)
49. Not connected
50. Not connected
51. Potentiometer signal 1 accelerator pedal
52. Brake pedal switch
53. Not connected
54. Not connected
55. Engine oil pressure sensor
56. Fuel pump remote switch
57. Not connected
58. Not connected
59. High speed electric fan drive command
60. Not connected
61. Not connected
62. Main remote switch command
63. Low speed electric fan drive command
64. MIL - NQS

 

(B) CONNECTOR FOR ENGINE SIDE WIRING
1. Not connected
2. Not connected
3. Not connected
4. Not connected
5. Mass of engine block A
6. Mass of engine block A
7. Mass air pressure/temperature sensor and engine water temperature sensor
8. Not connected
9. Revolution sensor signal
10. Not connected
11. Not connected
12. Not connected
13. Air pressure/temperature sensor power supply (+5 V)
14. Not connected
15. Power supply for butterfly actuator and phase sensor
16. Not connected
17. Coil 1 command
18. Not connected
19. Coil 2 command
20. Not connected
21. Mass of engine block A
22. Mass of engine block A
23. Not connected
24. Phase sensor signal
25. Not connected
26. Not connected
27. Not connected
28. Not connected
29. Not connected
30. Motorized throttle sensor signal 2
31. Air pressure/temperature sensor signal
32. Front Lambda heater command
33. Cylinder 4 injector command
34. Cylinder 2 injector command
35. Motorized throttle sensor ground 1 and phase sensor ground
36. Revolution sensor ground
37. Not connected
38. Not connected
39. Not connected
40. Not connected
41. Positive knock sensor
42. Rear Lambda probe "+" signal
43. Previous Lambda probe "+" signal
44. Motorized throttle sensor signal 1
45. Water temperature signal
46. Not connected
47. Not connected
48. Negative knock sensor
49. Cylinder 3 injector command
50. Cylinder 1 injector command
51. Canister washing solenoid valve command
52. DBW (motorized throttle) motor negative command
53. Not connected
54. Not connected
55. Not connected
56. Not connected
57. DBW (motorized throttle) motor positive command
58. Previous Lambda probe signal (-)
59. Not connected
60. Previous Lambda probe signal (-)
61. Not connected
62. Not connected
63. Air temperature signal
64. Rear Lambda heater command

image_2024-01-20_184707933.png

Fiat IAW 5SF9 English Translated Documentation.pdf Fiat IAW 5SF9 Spanish Documentation.pdf



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