GF82.61-P-4112FLA Component Description For Radio With Auto Pilot System
GF82.61-P-4112FLA Component Description For Radio With Auto Pilot System
- with CODE (511) Audio 50 APS with DVD changer
- with CODE (525) MB Audio 50 APS radio
Component Identification:
Location
The radio with auto pilot system is located in the center console.
Task
The radio with auto pilot system has the following tasks:
^ Central operating unit for the entertainment and communication systems integrated into the vehicle
^ Reads 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 radio with auto pilot system provides the user with a structured and uniform interface for the following system components:
- Audio (radio/CD/DVD/AUX)
- Communication (telephone (with address book function), read short message service (SMS))
- Navigation (arrow navigation in instrument cluster (A1) and 2D map display in the Audio/COMAND display)
- Voice control system (VCS [SBS]), (only with code (511) Audio 50 APS with DVD changer)
Reads in the controls and input 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 radio with auto pilot system is equipped with the following direct connections:
- Circuit 30g
- Circuit 31
- Wake-up for MOST (bi-directional)
- AUX connection in the glove compartment, for external audio devices (without code (518) Media interface)
- FM 1, AM, CL and KEYLESS-GO antenna amplifier (A2/18)
- Antenna amplifier FM 2 and DAB (A2/19)
- Bluetooth antenna (A2/91)
- Multifunction antenna (A28/11)
- Hands-free system microphone (A67b1)
CAN
- The radio with auto pilot system is a subscriber of the interior CAN (CAN B).
- The radio with auto pilot system is a subscriber of the telematics CAN (CAN A).
MOST
Control and audio signals from the following control units:
- Sound system amplifier control unit (N40/3)
(with code (810) Sound system)
- Digital Audio Broadcasting control unit (N87/3)
(with code (537) Digital radio)
- Media interface control unit (N125/1)
(with code (518) Media interface)
Evaluation of input factors
The input factors are processed in the radio with auto pilot system.
Activation of output media and system components
- Audio output (speaker) (without code (810) Sound system)
- Switch voltage for mobile phone cradle (A34/15) via the Bluetooth module (A34/7) (with code (386) Comfort telephony)
- Video output: low voltage differential signal (LVDS) line, transmits picture and video signals from the radio with auto pilot system to the audio/COMAND display
Body
Component Identification:
Function
The status of the buttons of the button panels at the radio with auto pilot system is 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 radio with auto pilot system is pressed, the radio with auto pilot system switches on. The volume is regulated for each audio source set by turning the ON button. The function keys in the left-hand button panel are used to switch over to the audio source selected by the user.
Variants
The radio with auto pilot system is available in the following variants:
- Audio 50 with single DVD drive
(with code (525) MB Audio 50 APS radio) (without VCS [SBS])
- Audio 50 with DVD changer
(with code (511) Audio 50 APS with DVD changer) (with VCS [SBS])
Diagnosis
The radio with auto pilot system is the diagnosis gateway for all MOST subscribers. The diagnostic communication takes place between the radio with the auto pilot system 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 with fuse and relay module and the diagnostic connector (X11/4) connected to the "IS tester" is performed via the diagnostic CAN (CAN D).
