E60, E61, E63, E64, E87, E90 System Overview Multi Audio System Controller M-ASK

The system overview is split up as follows:

1. > E60, E61, E63, E64:
   • M-ASK input/output
   • M-ASK system circuit diagram
2. > E87, E90:
   • M-ASK input/output
   • M-ASK system circuit diagram
3. > E60, E61, E63, E64, E87, E90:
   • Navigation system inputs/outputs
   • Order of electronic modules

M-ASK inputs/outputs on E60, E61, E63, E64  

The illustration shows the input and output signals in the E60 as an example.

Key	Explanation	Key	Explanation
1	Multi-audio system controller (M-ASK)	2	Controller in the centre console
3	Telephone (option 638 "Professional car phone" or option 644 "Universal charging and hands-free device")	4	CD changer (option 672 "6-disc CD changer in the glove box")
5	Aerials (in the rear window)	6	GPS satellites
7	Satellite Digital Audio Radio System SDARS (only US version)	8	Telephone and GPS aerial
9	Dynamic Stability Control (DSC)	10	DVD for the navigation system
11	Wheel speed sensor	12	Steering column switch cluster
13	Instrument cluster (for the Check Control messages)	14	Central Information Display (CID)
15	Navigation	16	Entertainment
17	Communication	18	Climate (for control of the integrated automatic heating/air-conditioning system)
19	Audio operation	20	Audio signals (music, language, navigation messages)
21	Park Distance Control (PDC)	22	Audible notes (jingles) e.g. output of gongs
23	TOP-HIFI amplifier (option 677 "Hifi system Professional with Logic 7 signal processing")	24	Head-up display

M-ASK system circuit diagram on E60, E61, E63, E64 

The illustration shows the system circuit diagram in the E60 as an example.

Key	Explanation	Key	Explanation
1	Multi-audio system controller (M-ASK)	2	Safety and gateway module (SGM)
3	Steering column switch cluster (SZL)	4	Controller (CON)
5	Aerial diversity	6	CD changer (option 672 "6-disc CD changer in the glove box")
7	Flash connector FS	8	Satellite Digital Audio Radio Service SDARS (only US version)
9	Telematic Control Unit TCU (option 605)	10	Instrument cluster for the Check Control messages
11	Central Information Display (CID)	12	Front left loudspeaker (only if no Top-HiFi amplifier is fitted)
13	Rear left loudspeaker (only if no Top-HiFi amplifier is fitted)	14	Front right loudspeaker (only if no Top-HiFi amplifier is fitted)
15	Rear right loudspeaker (only if no Top-HiFi amplifier is fitted)	16	TOP-HIFI amplifier (option 677)
17	Head-up display (HUD)
AM/FM	Radio aerial	Aux-In	Auxiliary audio input
BT	Bluetooth antenna	D-Bus	Diagnostics bus
GPS	Global Positioning System	GSM	Telephone aerial
GSM_N	Aerial for emergency call	K-CAN	Body CAN
Kl. 30	Terminal 30, power supply	Kl. 31	Terminal 31, earth
Kl. 58g	Instrument lighting	LVDS	Low Voltage Differential Signalling
MOST	Media-Oriented System Transport	SAT	Aerial for satellite reception
TER	Aerial for terrestrial reception

M-Ask Inputs/Outputs On E87, E90 

The illustration shows the input and output signals in the E87 as an example.

Key	Explanation	Key	Explanation
1	Multi-audio system controller (M-ASK)	2	Central Information Display (CID)
3	Junction-box electronics (JBE)	4	Navigation display
5	Entertainment display	6	Telephone menu display
7	Air conditioning display	8	Audio operation
9	Audio signals (music, language, navigation messages)	10	Park Distance Control (PDC)
11	Audible notes (jingles) e.g. output of gongs	12	Amplifier for HiFi system
13	Amplifier for Top-HiFi system	14	Instrument cluster (for the Check Control messages)
15	Steering column switch cluster	16	DVD for the navigation system
17	Wheel speed sensor	18	Dynamic Stability Control (DSC)
19	GPS data from satellites	20	Roof-mounted aerial
21	Rear window antenna	22	CD changer - optional
23	AUX-In connection	24	Telephone - optional
25	Controller

M-Ask System Circuit Diagram On E87, E90 

The illustration shows the system circuit diagram in the E87 as an example.

Key	Explanation	Key	Explanation
1	Multi-audio system controller (M-ASK)	2	Central Information Display (CID)
3	Junction-box electronics (JBE)	4	Diagnostic wire
5	Dynamic Stability Control (DSC)	6	Steering column switch cluster (SZL)
7	Roof-mounted aerial for FM	8	Roof-mounted aerial for AM
9	Aerial amplifier for roof-mounted aerial	10	Rear window antenna
11	Aerial diversity with amplifier	12	Front right tweeter loudspeaker - optional
13	Front right mid-range loudspeaker	14	Central bass, right
15	Rear right mid-range loudspeaker	16	Rear right tweeter loudspeaker - optional
17	CD changer - optional	18	Telephone - optional
19	TOP-HiFi amplifier - optional	20	HiFi amplifier - optional
21	Audio signal cable, only with stereo or HiFi system	22	Rear left tweeter loudspeaker - optional
23	Rear left mid-range loudspeaker	24	Central bass, left
25	Controller (CON)	26	Front right mid-range loudspeaker
27	Front left tweeter loudspeaker - optional	28	Instrument cluster
AM/FM	Radio aerial	Aux-In	Auxiliary audio input

Input/Output Navigation System 

The illustration shows the input and output signals in the E60 as an example.

Key	Explanation	Key	Explanation
1	Multi-audio system controller (M-ASK)	2	DSC control unit
3	Wheel speed sensor	4	Telephone and GPS aerial
5	Controller	6	Central Information Display (CID)
7	Audio output

Order of electronic modules 

The illustration shows the M-ASK in the E60 as an example.

Key	Explanation	Key	Explanation
1	Yaw rate sensor	2	Pigtail with electronic evaluation unit
3	Processor board	4	CD, CD-ROM or DVD drive
5	GPS receiver	6	Audio output stage
7	Electric fan