Electrical Control System
| Item | Part Number | Description |
|---|---|---|
| 1 | 7M101 | Input shaft speed sensor 1 |
| 2 | 7M101 | Input shaft speed sensor 2 |
| 3 | 7G276 | Wiring harness |
| 4 | 7F293 | Transmission Range (TR) sensor |
| 5 | 7H103 | Output Shaft Speed (OSS) sensor |
| 6 | 7C604 | Clutch motor 2 |
| 7 | 7C604 | Clutch motor 1 |
| 8 | 7Z369 | TCM |
Electrical components function:
- Input shaft speed sensor 1 measures the speed and the rotating direction of the input shaft 1. The input shaft can be stationary.
- Input shaft speed sensor 2 measures the speed of the input shaft 2. The rotation direction is not measured.
- OSS sensor measures the speed of the output shaft. The rotation direction is not measured.
- Two electrical clutch motors are used to actuate the dual clutch in the transmission - one motor for each clutch. The motors work independently of each other. When the clutch is fully closed, the clutch motor provides the holding torque in addition with spring force. The clutch motors work against a clutch spring and self disengage with no electrical power.
- TR sensor detects the angular position of the shift lever shaft.
- TCM is an assembly of an electronic module, sensors, and electrical motors.
- The TCM's electrical motors (2) control the mechanical shift fork system. The shift drums are the link from electrical to mechanical operation. The TCM collects incoming vehicle, transmission and driver demand signals and uses these signals to select the next required gear ratio. The TCM receives transmission sensor signals and transmits clutch motor current through externally mounted wire harness. The TCM uses these signals to control shift feel.