ELECTRIC SPEED SELECTION SYSTEM

Description 2127E

2.0 JTS · Smart gearbox

COMPONENT DESCRIPTION

ELECTRONIC CONTROL UNIT

It is fitted in the passenger compartment under the dashboard on the passenger side.

The control unit communicates with the engine control unit through a CAN line and is fitted with a tester line.

PIN OUT

1. Earth

2. Earth

3. EV4 gear + selection actuator solenoid

4. Not connected

5. Not connected

6. Not connected

7. Not connected

8. Not connected

9. Not connected

10. Not connected

11. Not connected

12. Not connected

13. Not connected

14. Not connected

15. Not connected

16. Not connected

17. Not connected

18. Not connected

19. Not connected

20. Not connected

21. Not connected

22. Not connected

23. Not connected

24. Not connected

25. Not connected

26. Gear selection bit 0

27. Supply (+30)

28. Supply controlled by the ignition

29. Solenoid EV3 controlling selection actuator

30. Not connected

31. Pump relay control

32. Engagement actuator control solenoid EV1

33. CAN - line

34. Not connected

35. Not connected

36. Not connected

37. Not connected

38. Gear + input rpm sensor

39. Gear engagement position sensor

40. Pressure sensor

41. Not connected

42. Start-up relay control

43. Solenoid EV0 controlling clutch actuator +

44. Solenoid EV2 controlling gear engagement actuator +

45. CAN + line

46. Not connected

47. Not connected

48. Engine rpm

49. Diagnostic line K

50. Gear - input rpm sensor

51. Gear selection position sensor

52. Clutch position sensor

53. Not connected

54. Not connected

55. Not connected

56. Not connected

57. Not connected

58. Not connected

59. Not connected

60. Not connected

61. Not connected

62. Not connected

63. Not connected

64. Not connected

65. Not connected

66. Not connected

67. Speed selection bit 1

68. Speed selection bit 3

69. Brake pedal switch

70. Brake pedal switch

71. Brake pedal switch

72. Brake pedal switch

73. Gear engagement position sensor power source

74. Speed selection bit 2

75. Speed selection bit 4

76. Start-up signal

77. Auto switch

78. Door button

79. Clutch position sensor power source

80. Buzzer output control

GEARBOX INPUT SHAFT SPEED SENSOR

Electromagnetic, fitted to the gearbox bell housing.

OIL PRESSURE SENSOR

Active type and fitted to the hydraulic actuation unit.

DIAGRAM

ACTUATOR POSITION SENSORS

The sensors (potentiometers) that send the gearbox electronic control unit the position of the two actuators (speed selection and speed engagement) are fitted to the hydraulic actuation unit.

A. Earth

B. Supply

C. Signal

CLUTCH POSITION SENSOR

This is fitted on the clutch control actuator and informs the electric control unit of the position of the clutch control actuator.

BRAKE PEDAL SWITCH

This is fitted to the pedal unit and closed when the pedal is pressed to cause the STOP lights to come on and a signal to be sent to the gearbox electronic control unit

DOOR OPEN SWITCH

Detects when driver side door is open via an on-off switch that earths the circuit and informs the Selespeed control unit that this has occurred.

BUZZER

This is built into the control panel and notifies the driver of:

• a fault in the system;
• improper use (e.g. clutch overheating);
• car safety (e.g. ignition turned off with car in neutral).