Automatically Shifted Manual Transmission/Transaxle: Description and Operation

GF26.19-P-1010MCU Component Description For The Automated Manual Transmission Control Unit

TRANSMISSION 717.482







N15/6 Automated manual transmission control unit

Location
The automated manual transmission control unit is located in the passenger compartment under the driver seat.

Task
The automated manual transmission control unit controls, monitors and coordinates the complete transmission control.
For this purpose it exchanges (CAN) data with other control units via the Controller Area Network (data bus/CAN bus).

The automated manual transmission control unit controls the following functions:
^ Engage first gear when the vehicle is stationary
^ Gear change
^ Forced upshift just before reaching the maximum speed of the engine
^ Forced downshift when approaching the idle speed of the engine
^ Shift down for kickdown
^ Crawl function
^ Clutch operator
^ Monitoring clutch load

Signals from the following components are read in directly by the automated manual transmission control unit:
^ Transmission rpm sensor (L2)
^ Transmission motor 1 (M17/3)
^ Transmission motor 2 (M17/4)
^ Clutch motor (M18)
^ Park pawl switch (S16/2)

The following components are actuated directly by the CDI control unit:
^ Transmission motor 1
^ Transmission motor 2
^ Coupling motor

Communication via the drive LIN takes place via the CAN:
^ Instrument cluster (A1)
^ ME-SFI [ME] control unit (/)N3/10
^ Electronic selector lever module control unit (/)N15/5
^ ESP control unit (N47-5)