Sunday 2 July 2023

BMW Bosch DME Motronic 1.3 Connector / Plug Pinout Diagram


 

Pin Connection

  1. 1  ignition coil: t1

  2. 2  earth, ignition driver

  3. 3  pump relay driver: t85

  4. 4  ISCV switching: t1

  5. 5  CFSV switching: t1

  6. 6  tachometer

  7. 7  AFS signal: t2

  8. 8  CID signal: t2

  9. 9  unused

  10. 10  OS return: t4

  11. 11  unused

  12. 12  AFS supply: t3

  13. 13  diagnostic socket : t15

  14. 14  earth, injector driver

  15. 15  warning lamp (US only)

  16. 16  injector pulse, cyls 2 and 4

    (model year 89: cyls 1 and 3)

  17. 17  injector pulse, cyls 1 and 3 (model year 89: cyls 2 and 4)

  18. 18  battery supply: t30

  19. 19  earth, main ECM and shield

  1. 20  unused

  2. 21  unused

  3. 22  unused

  4. 23  OS relay driver : t85

  5. 24  earth, output drivers other

    than injector & ignition

  6. 25  unused

  7. 26  AFS return: t5

  8. 27  ignition switch: t15

  9. 28  OS signal: t3

  10. 29  VSS

  11. 30  unused

  12. 31  CID return: t1

  13. 32  fuel consumption meter

  14. 33  kick down prevent, AT

  15. 34  unused

  16. 35  unused

  17. 36  main relay driver: t85

  18. 37  nbv supply from main relay: t87

  19. 38  anti-theft system

  20. 39  diagnostic socket : t18

  21. 40  A/C pressure switch

  22. 41  A/C motor switch

  23. 42  AT drive selector

  24. 43  CO pot (AFS : t3)

  25. 44  ATS (AFS : t4)

  26. 45  CTS signal: t2

  27. 46  unused

  28. 47  CAS: t1

  29. 48  CAS return: t2

  30. 49  unused

  31. 50  unused

  32. 51  Ignition timing intervention (Electronic transmission control)

           Note: temporarily switched on during AT downshifts

  1. 52  TPS idle contact : t1

  2. 53  TPS full-load contact : t3

  3. 54  unused

  4. 55  diagnostic socket : t20