COMAND controller unit, component description - GF82.85-P-3136LEJ

MODEL 216, 221 with CODE (529) HIGH Class Japan as of model year 2009 /YoM 08 

Shown on model 221 

Location 

The COMAND controller unit is installed into the center console.

Task 

The COMAND controller unit fulfills the following tasks:

• Processing unit for entertainment and communications systems 
• Reading in of signals 
• Evaluation of input factors 
• Actuates output media 

Processing unit for entertainment and communications systems 

The COMAND controller unit provides the user with a structured and uniform interface via the COMAND display (A40/8).

Reading in of signals 

The input factors are read in via the following connections:

• Direct line 
• Controller Area Network (data bus/CAN bus) (CAN) 
• Media Oriented System Transport (MOST) 

Direct line 

The following signals are read in via direct lines:

• Wake-up (MOST)
• AUX input
• Global Positioning System (GPS) signal
• Composite Video Baseband Signal (CVBS) from the reversing camera control unit (N66/2) (in model 221 with code (218) Reversing camera)
• Antenna signals from the TV antenna selector (A2/79)
• Vehicle Information and Communication System (VICS) data
• Electronic Toll Collection System (ETC) data
• Cellular telephone
• Input signals of the hands-free system microphone group (A67b1)

CAN 

The signals are read in by the COMAND controller unit via telematics CAN (CAN A) and central CAN (CAN F).

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

MOST 

The COMAND controller unit reads in control and audio signals of the audio tuner control unit (N93/1) via MOST.

Evaluation of input factors 

The input factors are processed and evaluated by the COMAND controller unit.

Actuates output media 

Output media are actuated with the following connection:

• Direct line 
• MOST 
• CAN 

Direct line 

The following output media are actuated via direct lines:

• COMAND display via low voltage differential signaling (LVDS) line (picture and video signals)
• DVD player (A40/4) (model 221 with code (864) Rear entertainment system) picture signals via LVDS line, TV audio via direct line, TV video via Y - brightness (luminance)/C - color information (chrominance) (Y/C) line
• Switching voltage for Electronic Toll Collection control unit (ETC) (A50/3) (U = 12 V)
• Switching voltage for VICS antenna (U = 5 V)

LVDS lines are used to transfer picture and video signals.

MOST 

The COMAND controller unit transmits audio signals to the audio tuner control unit.

CAN 

The signals are transmitted by the COMAND controller unit via telematics CAN and central CAN.

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

	Cockpit Management and Data System (COMAND) control unit wiring diagram	Model 216 Sheet 1	PE82.85-P-2101-99CAD
		Model 216 Sheet 2	PE82.85-P-2101-99CAC
		Model 221 Sheet 1	PE82.85-P-2101-99SAD
		Model 221 Sheet 2	PE82.85-P-2101-99SAC