GF27.60-P-5168AHI Drive Unit Control Unit Component Description

GF27.60-P-5168AHI Drive unit control unit component description
- TRANSMISSION 722.930

Component Identification:

Location
The drive unit control unit is located in the footwell behind the driver seat.

Task

General
On the drive unit control unit, up to five modular switches/sensors can be directly connected. These are then read in by the drive unit control unit, digitized and applied cyclically to the interior CAN (CAN 13) for further processing.

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

Basic functions
- Reading in the signals for the drive unit transmission mode adjustment rotary switch, ESP-Sport-Off drive unit button (S193/1), suspension drive unit button (S193/2) and the drive unit button (S193/3)
- Transmission of transmission mode selection "RS", "C", "S", "S+", and "M".

Flash programming
The drive unit control unit is flashable i.e. the complete software in the control unit can be changed (replaced). The software required to program the control units is stored on the STAR DIAGNOSIS DAS Update DVD.

CAN data bus
The drive unit control unit is connected to the CAN system of the vehicle via the interior CAN (CAN-C) and exchanges data with other control units.

Input and output signals
The following input signals are evaluated by the drive unit control unit and the corresponding output signals issued:

^ Direct input signals
^ Direct output signals
^ CAN input signals
^ CAN output signals

Direct input signals
- Circuit 30
- Tml. 31
- Drive unit transmission mode adjustment rotary switch status (S192)
- Drive unit ESP Sport OFF button, status
- Drive unit suspension button, status
- Drive unit button, status

Direct output signals
- Search and function illumination "circuit 58d" for ESP-Sport-Off drive unit button, chassis drive unit button and drive unit button

CAN input signals
Instrument cluster (A1)
- Circuit 58 dimmed

Overhead control panel control unit (N70)
- Function illumination change-over (day/night)

EIS control unit (N73)
- "Terminal 50 signal"
- "Terminal 15 signal"
- Diagnosis request

Central gateway control unit (N93)
- Drive unit message present, feedback on which transmission mode has been engaged by the transmission

CAN output signals
Instrument cluster (A1)
- Transmission mode selection, ESP-Sport-Off mode and drive unit mode for left multifunction display (A1p13) and right multifunction display (A1p15)
- Chassis mode for left multifunction display

ESP, SPS [PML] and BAS control unit (N47-5)
- ESP-Sport-Off mode request

ABC control unit (N51/2)
- Chassis mode request

EIS control unit (N73)
- Enable request (DAS 3)
- Diagnosis request

Fully electronic transmission-control control unit (VGS) (Y3/8n4)
- Transmission mode selection