GF27.19-P-1350AHX Transmission Mode Control Unit, Component Description

GF27.19-P-1350AHX Transmission Mode Control Unit, Component Description
TRANSMISSION 722.930 up to 31.5.11, 722.931 as of 1.6.11
in MODEL 212.0/ 2





N145 Transmission mode control unit

Location
The transmission mode control unit is on the right under the step plate in the front passenger footwell.

Task
General
On the transmission mode control unit, up to 5 modular buttons or sensors can be directly connected. They are read in by the transmission mode control unit directly or via the AMG DRIVE UNIT LIN (LIN B11), processed digitally and placed on the chassis CAN (CAN E) and on the drive train CAN (CAN C).

The transmission mode control unit contains memory functions for storing states (e.g. settings). Apart from this, the transmission mode control unit is also equipped with an internal fault memory.

Input and output signals
The transmission mode control unit evaluates the following input signals and issues the corresponding output signals:
^ Direct input signals
^ Control Area Network (data bus/CAN bus) (CAN) input signals
^ CAN output signals
^ AMG DRIVE UNIT LIN signals

Direct input signals
- Circuit 30
- Circuit 31
- Status of AMG ESP Sport Off button (S193/1)
- Status of AMG suspension button (S193/2)
- Status of AMG button (S193/3)

CAN input signals
- Circuit 58 dimmed by instrument cluster (A1)
- Circuit 50 signal and circuit 15 signal from electronic ignition lock control unit (N73)
- Diagnostic communication, from front SAM control unit with fuse and relay module (N10/1)

CAN output signals
- Transmission mode selection, status of AMG ESP Sport Off button, status of AMG suspension button and status of AMG button, to instrument cluster
- Status of ESP Sport Off AMG button, to the Premium Electronic Stability Program control unit (N30/7)
- Status of AMG chassis button to AIRmatic control unit (N51/3)
- Transmission mode selection, to fully integrated transmission control unit (Y3/8n4), to ME-SFI [ME] control unit (N3/10)
- Diagnostic communication to front SAM control unit with fuse and relay module

AMG DRIVE UNIT LIN signals
- Transmission mode selection "RS", "C", "S", "S+" and "M" at transmission mode rotary switch (S192)