Communication ● MMI ● Multimedia system operating unit ● Digital radio, radio (K-box) ● Navigation system ● Telephone, preparation for mobile telephone, Bluetooth ● TV tuner ● Media player from model year 2007

Audi Q7 Current Flow Diagram No. 21 / 1 Edition 02.2006

Notes:

For information concerning

Position of relays and fuses Multi-pin connections Control units and relays Earth connections

→ List of Fitting Locations!

For information concerning

Fault Finding Programs

→ guided fault finding

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Audi Q7 Current Flow Diagram No. 21 / 2

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Data bus diagnostic interface, fuses J329 - Terminal 15 voltage supply relayJ533 - Data bus diagnostic interfaceSB8 - Fuse 8 on fuse holder BSB10 - Fuse 10 on fuse holder BSB11 - Fuse 11 on fuse holder BSD1 - Fuse 1 on fuse holder DT16 - 16-pin connector, diagnosis socketT26b -

26-pin connector, black, connector B, on data bus diagnostic interface

374 - Earth connection 9, in main wiring harness

664 - Earth point, on left behind dash panel

B272 - Positive connection (30), in main wiring harness

B273 - Positive connection (15), in main wiring harness

B325 - Positive connection 11 (30a), in main wiring harness

• - CAN bus (data wire)* - Relay and fuse carrier under driver seat

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Data bus diagnostic interface, control unit in dash panel insert J285 - Control unit in dash panel insertJ428 - Adaptive cruise control unitJ533 - Data bus diagnostic interfaceT8c - 8-pin connector, black, in front left engine compartmentT26b -

26-pin connector, black, connector B, on data bus diagnostic interface

T32a - 32-pin connector, grey, on control unit in dash panel insertT46a - 46-pin connector, black, CAN separating connector left

B398 -

Connection 2 (convenience CAN bus, high), in main wiring harness

B407 -

Connection 2 (convenience CAN bus, low), in main wiring harness

B444 -

Connection 1 (diagnosis), in main wiring harness (ring brake diagnosis)

• - CAN bus (data wire)* - models with adaptive cruise♦ -

Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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Front information display and operating unit control unit, fuses J523 - Front information display and operating unit control unitSC5 - Fuse 5 on fuse holder CSC6 - Fuse 6 on fuse holder CSC8 - Fuse 8 on fuse holder CSC10 - Fuse 10 on fuse holder CSD2 - Fuse 2 on fuse holder DT20k -

20-pin connector, red, connector A, on front information display and operating unit control unit

45 - Earth point, centre behind dash panel

373 - Earth connection 8, in main wiring harness

B300 - Positive connection 4 (30), in main wiring harness

B444 -

Connection 1 (diagnosis), in main wiring harness (ring brake diagnosis)

* - Relay and fuse carrier under driver seat# - models with telephone## - models with preparation for mobile telephone### - models with Bluetooth car phone♦ -

Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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Front information display and operating unit control unit, multimedia system operating unit, glove compartment button, display unit button E316 - Glove compartment buttonE380 - Multimedia system operating unitE506 - Display unit buttonJ520 - Onboard supply control unit 2J523 - Front information display and operating unit control unitT6w - 6-pin connector, black, on switch module, sideT16f - 16-pin connector, brown, on multimedia system operating

unitT20k -

20-pin connector, red, connector A, on front information display and operating unit control unit

T40a - 40-pin connector, black, on onboard supply control unit 2

45 - Earth point, centre behind dash panel

378 - Earth connection 13, in main wiring harness

B340 - Connection 1 (58s), in main wiring harness

B341 - Connection 2 (58s), in main wiring harness

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Front information display and operating unit control unit, display unit for front information display and operating unit control unit J523 - Front information display and operating unit control unitJ685 -

Display unit for front information display and operating unit control unit

T22a - 22-pin connector, on display unit for front information display and operating unit control unit

T22b - 22-pin connector, black, connector C, on front information display and operating unit control unit

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Front information display and operating unit control unit, display unit for front information display and operating unit control unit J523 - Front information display and operating unit control unitJ685 -

Display unit for front information display and operating unit control unit

T22a - 22-pin connector, on display unit for front information display and operating unit control unit

T22b - 22-pin connector, black, connector C, on front information display and operating unit control unit

* - models without DVD player** - models with DVD player*** - screening on connector housing

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Media player in position 1 and 2 R41 - CD changerR118 - Media player in position 1R119 - Media player in position 2R129 - Video recorder and DVD playerR153 - Mini Disc playerT8h - 8-pin connector, black, on media player in position 1T8i - 8-pin connector, black, on media player in position 2

687 - Earth point 1, on centre tunnel

* - models with CD changer** - models with DVD player*** - models with MiniDisc player♦ -

Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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Telephone (9ZJ), telephone transmitter and receiver unit, aerial for Bluetooth R36 - Telephone transmitter and receiver unitR152 - Aerial for BluetoothT42 -

42-pin connector, blue, on telephone transmitter and receiver unit

35 - Earth point, under front passenger seat

386 - Earth connection 21, in main wiring harness

B330 - Positive connection 16 (30a), in main wiring harness

♦ - Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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Telephone transmitter and receiver unit, telephone handset, microphone unit in front roof module, radio, telephone and navigation system aerial R36 - Telephone transmitter and receiver unitR37 - Telephone handsetR52 - Radio, telephone and navigation system aerialR126 - Telephone bracketR164 - Microphone unit in front roof moduleT6x - 6-pin connector, blue, on microphone unit in front roof

moduleT12n - 12-pin connector, black, on telephone bracketT42 -

42-pin connector, blue, on telephone transmitter and receiver unit

35 - Earth point, under front passenger seat

* - roof aerial

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Preparation for mobile telephone (9ZF / 9ZG), telephone transmitter and receiver unit, microphone unit in front roof module, aerial for Bluetooth R36 - Telephone transmitter and receiver unitR152 - Aerial for BluetoothR164 - Microphone unit in front roof moduleT6x - 6-pin connector, blue, on microphone unit in front roof

moduleT54a - 54-pin connector, on telephone transmitter and receiver unit

35 - Earth point, under front passenger seat

B330 - Positive connection 16 (30a), in main wiring harness

♦ - Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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Telephone transmitter and receiver unit, mobile telephone, telephone bracket R36 - Telephone transmitter and receiver unitR54 - Mobile telephoneR126 - Telephone bracketT12n - 12-pin connector, black, on telephone bracketT54a - 54-pin connector, on telephone transmitter and receiver unit

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Bluetooth car phone(9ZW), telephone transmitter and receiver unit, telephone transmitter and receiver unit, aerial amplifier for mobile telephone, aerial for Bluetooth R36 - Telephone transmitter and receiver unitR52 - Radio, telephone and navigation system aerialR86 - Aerial amplifier for mobile telephoneR152 - Aerial for BluetoothT3r -

3-pin connector, black, on aerial amplifier for mobile telephone

T54a - 54-pin connector, on telephone transmitter and receiver unit

35 - Earth point, under front passenger seat

51 - Earth point, on right in luggage compartment

386 - Earth connection 21, in main wiring harness

B330 - Positive connection 16 (30a), in main wiring harness

* - models with preparation for mobile telephone** - models with Bluetooth car phone♦ -

Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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Telephone transmitter and receiver unit, radio, telephone and navigation system aerial, mobile telephone, telephone bracket, microphone unit in front roof module R36 - Telephone transmitter and receiver unitR52 - Radio, telephone and navigation system aerialR54 - Mobile telephoneR126 - Telephone bracketR164 - Microphone unit in front roof moduleT6x - 6-pin connector, blue, on microphone unit in front roof

moduleT12n - 12-pin connector, black, on telephone bracketT54a - 54-pin connector, on telephone transmitter and receiver unit

35 - Earth point, under front passenger seat

* - roof aerial** - models with Bluetooth car phone

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Radio, fuses J525 - Digital sound package control unitR - RadioSD3 - Fuse 3 on fuse holder DSF5 - Fuse 5 on fuse holder FSF6 - Fuse 6 on fuse holder FSF7 - Fuse 7 on fuse holder FSF8 - Fuse 8 on fuse holder FSF9 - Fuse 9 on fuse holder FT8k - 8-connector, black, on radioT32c - 32-pin connector, black, on digital sound package control unit

675 - Earth point 2, on right in luggage compartment

B331 - Positive connection 17 (30a), in main wiring harness

* - Relay and fuse carrier under driver seat

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Radio, language input control unit J507 - Language input control unitR - RadioT12o - 12-pin connector, on radio* - models with voice control♦ -

Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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TV tuner, aerial amplifier R24 - Aerial amplifierR78 - TV tunerT3q - 3-pin connector, black, on aerial amplifierT20p - 20-pin connector, on TV tuner

370 - Earth connection 5, in main wiring harness

666 - Earth point, on rear right of roof

675 - Earth point 2, on right in luggage compartment

* - models with TV tuner** - models without CD changer or video recorder and DVD

player*** - models with CD changer or video recorder and DVD player♦ -

Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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TV tuner, aerial amplifier R24 - Aerial amplifierR78 - TV tunerR111 - Aerial amplifier 2R112 - Aerial amplifier 3

666 - Earth point, on rear right of roof

669 - Earth point 2, right D-pillar

* - models with TV tuner# - rear window aerial## - aerial on spoiler### - side window aerial right

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TV tuner, digital radio, aerial amplifier E415 - Entry and start authorisation switchR24 - Aerial amplifierR78 - TV tunerR113 - Aerial amplifier 4R147 - Digital radioT8m - 8-pin connector, black, on digital radio

667 - Earth point, on rear left of roof

* - models with TV tuner** - models with digital radio# - side window aerial left♦ -

Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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Navigation system with CD drive control unit, radio, telephone and navigation system aerial J401 - Navigation system with CD drive control unitR36 - Telephone transmitter and receiver unitR52 - Radio, telephone and navigation system aerialT8n -

8-pin connector, black, on navigation system with CD drive control unit

35 - Earth point, under front passenger seat

675 - Earth point 2, on right in luggage compartment

681 - Earth point 1, in rear right side panel

* - roof aerial♦ -

Fibre optic conductor, see Current Flow Diagram infotainment data bus (Most Ring)

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