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Electronic Transmission Control: Overview BMW 3 series E36

Automatic Trans ~233 words

ELECTRONIC CONTROL SYSTEM IDENTIFICATION

TransmissionEGS System
A4S 310R (THM-R1)4.XX
A4S 270Z (THM-R1)4.XX

ELECTRONIC CONTROL SYSTEM IDENTIFICATION

ABBREVIATIONS

  1. A - Output.
  2. EGS - Electronic transmission control.
  3. AG - Automatic transmission.
  4. Brs - Brake signal.
  5. OK - Throttle valve.
  6. DKT - Signal line for throttle angle and engine temperature.
  7. DME - Digital motor electronics.
  8. DR - Pressure regulator.
  9. DZF - Output speed sensor.
  10. E - Economy.
  11. E - Input.
  12. KD - Kick-down.
  13. Lx - Conductor x.
  14. M - Manual.
  15. ME - Engine intervention/ignition angle intervention.
  16. MF - Microfiche.
  17. MV - Solenoid valve.
  18. MV-B - Solenoid valve brake band.
  19. n-ab - Output speed.
  20. n-Mot - Engine speed.
  21. PWM - Pulse width-modulated.
  22. R-Sperre - Reverse lock-out.
  23. RxD - Diagnostic link initiation.
  24. S - Sports.
  25. SG - Control unit.
  26. TD - Ignition measuring signal (speed diagnosis).
  27. ti - Injection signal (time injection).
  28. TR - Crankshaft reference (once per revolution - tacho rotation).
  29. TxD - Diagnostic link telegram.
  30. U-Batt - Battery voltage.
  31. U-Vers - Supply voltage.
  32. WK - Torque converter clutch.

FUNCTIONAL DESCRIPTION

The transmission control unit communicates with the following components

  1. Gear selector lever switch: Conductors L1 to L4.
  2. Program switch: S, E, M.
  3. Instrument cluster.
  4. Kick-down switch.
  5. Brake light switch (with PIN shift-lock only).
  6. Brake light test switch (with PIN shift-lock only).
  7. Lifting solenoid PIN shift-lock (with PIN shift-lock only).
  8. Solenoid valves: MV 1, MV 2, MV band, MV-WK.
  9. Pressure regulator.
  10. Oil sump temperature sensor.
  11. Road speed sensor.
  12. DME control unit.