Component description for COMAND controller unit - GF82.85-P-3136CAJ
MODEL 207 with CODE (527) COMAND APS with single DVD drive (with navigation) with CODE (498) Japan version up to model year 2013/YoM 12
Illustrated on model 207.3
Location
The COMAND controller unit is installed into the center console.
Task
The COMAND controller unit fulfills the following tasks:
- Central operating unit for the entertainment and communication systems integrated into the vehicle
- Reading in the controls and input signals
- Evaluation of input factors
- Activation of output media and system components
Central operating unit for the entertainment and communication systems integrated into the vehicle
The COMAND controller unit provides users with a structured and uniform control surface.
Reading in the controls and input signals
The input factors are read in via the following connections:
- Direct lines
- CAN
- Media Oriented System Transport (MOST)
Direct lines
The COMAND controller unit has the following direct connections:
- Wake-up for MOST (bi-directional)
- FM, AM and CL [ZV] antenna amplifier (A2/18) (model 207.3) or FM, AM and CL [ZV] antenna amplifier (A2/55) (model 207.4)
- Rear window antenna amplifier for FM antenna (A2/19) (model 207.3) or TV 3, FM2 and DAB band III antenna amplifier (A2/54) (model 207.4)
- Bluetooth antenna (A2/91)
(Bluetooth® audio as of 1.6.2010, Internet as of 1.7.2011, telephony)
- Multifunction antenna (A28/11) (global positioning system (GPS) signals for navigation)
- Hands-free system microphone (A67b1) (2 microphones)
- Y-brightness (luminance)/C-color data (chrominance) (Y/C) lines from TV-digital tuner (A90/3)
- Reversing camera control unit (N66/2) (Color Video Baseband Signal (CVBS))
- Media interface electrical connector (X18/70) (CVBS signal)
- VICS control unit (A2/37) (dealer option)
- Electronic Toll Collection control unit (A50/3) (dealer option)
- Communications control unit (N123/6), up to 31.5.2010
- USB electrical connector (X115), as of 1.7.2011
- COMAND fan motor (M4/13) (diagnosis)
CAN
The COMAND controller unit is a telematics CAN (CAN A) and interior CAN (CAN B) subscriber
Media Oriented System Transport (MOST)
The COMAND controller unit exchanges data with the following control units:
- Sound system amplifier control unit (N40/3) (with code (810) Sound system)
- TV digital tuner
- Media interface control unit (N125/1)
Evaluation of input factors
The input values are processed in the COMAND controller unit.
Activation of output media and system components
- Audio output (without code (810) Sound system)
- Video output: Low voltage differential signaling (LVDS) line transmits picture and video signals from the COMAND controller unit to the Audio/COMAND display (A40/8)
- COMAND fan motor (power supply and control)
- Switching voltage for the communications control unit (up to 31.5.2010)
- Switching voltage for VICS control unit (dealer option)
- Actuation of Electronic Toll Collection control unit (Dealer option)
Design
Shown on vehicle up to 30.6.2011
The following components are integrated in the COMAND controller unit:
- Central computer
- Navigation and GPS control unit
- Hard disk
- DVD drive
- Card reading device for memory card
- Audio amplifier (without code (810) Sound system)
- Bluetooth® receiver
- Radio tuner
Function
- Controls
- DVD drive
- Navigation and GPS control unit
- Turn rate sensor
- Card reader for memory card
- Control unit for voice control system (VCS [SBS])
Controls
The buttons on the COMAND controller unit are read in and provided to the central computer. The button operations are processed further in the central computer and forwarded via MOST, the telematics CAN and the interior CAN to the other system components in the form of messages. If the ON button on the COMAND controller unit is pressed, the COMAND controller unit is switched on. The volume is regulated for each audio source set by turning the ON button. The function keys switch over to the audio source desired by the user.
In the event of system fault or system crash, pressing the "ON" button for t = 8 s will reboot the COMAND controller unit.
DVD drive
The integrated DVD drive can be used to read in data from the navigation DVD (e.g. navigation update) or play an audio CD/DVD or video DVD.
Only original audio CDs can be converted to the MP3 format and stored on the hard disk.
Navigation and GPS control unit
The navigation and GPS control unit is integrated into the COMAND controller unit and calculates the vehicle location using the incoming antenna signals, the wheel speeds and the signal of the turn rate sensor and calculates the vehicle route after the destination has been entered.
Turn rate sensor
The turn rate sensor determines the direction changes of the vehicle. It is installed in the navigation and GPS control unit. A calibration is not required.
Card reader for memory cards
With the aid of the integrated card reader, data (except audio data) from a memory card can be stored on the internal hard disk and then called up. Audio data on the memory card can be played from it, but not copied onto the hard disk.
Card reader variants
In vehicles up to 30.6.2011 the card reader is compatible with Personal Computer Memory Card International Association (PCMCIA) memory cards.
In vehicles as of 1.7.2011 the card reader is compatible with Secure Digital (SD) memory cards.
Control unit for voice control system (VCS [SBS])
The voice commands are processed and evaluated in the COMAND controller unit. The voice outputs for the dialog with the user are generated in the COMAND controller unit.
Variants
The COMAND controller unit is available in the following variants:
- up to 30.6.2011
- As of 1.7.2011
In the variant as of 1.7.2011 the COMAND controller unit in combination with a suitable mobile phone is Internet compatible.
Diagnosis
The COMAND controller unit is the diagnosis gateway for all MOST subscribers and the directly connected communications control unit (up to 31.5.2010). The diagnostic communication takes place between the COMAND controller unit and the front SAM control unit with fuse and relay module (N10/1) via the interior CAN.
The diagnostic communication between the front SAM control unit and the diagnostic connector (X11/4) connected to the "IS tester" is performed via diagnostic CAN (CAN D).
| Technical data Designation |
Unit | Values | Tolerance range | Remarks |
|---|---|---|---|---|
| COMAND controller unit | ||||
| Power supply | V | 12 | Operating voltage (UB ) | |
| Voltage limits | V | 9 | Minimum (UBmin ) | |
| V | 16 | Maximum (UBmax ) | ||
| Power consumption | A | 15 | Rated current consumption (IBmax ) | |
| A | 3.5 | Rated current consumption (IBTyp ) | ||
| A | approx. 4.5 | Speaker (IAction ) | ||
| A | approx. 0.1 | Cradle ON/OFF (IAction ) | ||
| mA | 0.3 | Quiescent current (I0 ) | ||
| Reverse polarity protection | Yes | |||
| Additional specific parameters | None | |||
| Special features | The COMAND controller unit is fused on the rear wall with a 20 A fuse in connector area 1, MQS 40 (electrical). | |||
| Flash capability/coding capability | Yes/no data | |||
| COMAND fan motor | ||||
| Model | Direct current motor | |||
| Power consumption | mA | 500 | Rated current | |
| USB electrical connection (as of 1.7.11) | ||||
| Model | Plug connection | |||
| Power consumption | mA | 500 | Permanent current |
| Cockpit Management and Data System (COMAND) control unit wiring diagram | A40/3, as of 1.7.2011 | PE82.85-P-2101-97EAD | |
| A40/3, as of 1.7.2011 | PE82.85-P-2101-97EAE | ||
| A40/3, up to 30.6.11 | PE82.85-P-2101-97EAB | ||
| A40/3, up to 30.6.11 | PE82.85-P-2101-97EAC |