eSelf Study Program 970153

The 2016 Audi TT Vehicle Electrics,
Electronics, and Infotainment Systems

i

Audi of America, LLC
Service Training
Created in the U.S.A.
Created 05/2015
Course Number 970153
©2015 Audi of America, LLC
All rights reserved. Information contained in this manual is based on
the latest information available at the time of printing and is subject to
the copyright and other intellectual property rights of Audi of America,
LLC., its affiliated companies and its licensors. All rights are reserved to
make changes at any time without notice. No part of this document
may be reproduced, stored in a retrieval system, or transmitted in any
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All requests for permission to copy and redistribute information should
be referred to Audi of America, LLC.
Always check Technical Bulletins and the latest electronic service repair
literature for information that may supersede any information included
in this booklet.

This eSSP contains video links which you
can use to access interactive media.

Revision 1: 5/2015
ii

Introduction ...................................................................................... 1
Power supply...................................................................................... 2
Battery ........................................................................................................................................................................2
Positive battery cable ................................................................................................................................................2
Fuses, fuse holder and jump start terminal ...........................................................................................................4

Networking......................................................................................... 6
Topology .....................................................................................................................................................................6
Overview of bus systems ...........................................................................................................................................8
New features of the bus systems .............................................................................................................................8
Optical bus system MOST150 ...................................................................................................................................9
Special tool .................................................................................................................................................................9

Control units..................................................................................... 10
Brief descriptions .................................................................................................................................................... 10

Exterior lights................................................................................... 26
Headlights ............................................................................................................................................................... 26
Headlight range adjustment .................................................................................................................................. 28
Tail lights ................................................................................................................................................................. 29
High-level brake light / license plate light ........................................................................................................... 30

Vehicle electronics............................................................................ 31
Car key ..................................................................................................................................................................... 31
Keyless starting system ......................................................................................................................................... 31
Terminal 15 power supply ..................................................................................................................................... 32
Advanced Key .......................................................................................................................................................... 34
Implementation of keyless entry and start systems at Audi ............................................................................. 34
System processes in the keyless start system ..................................................................................................... 36
System processes in the keyless entry system (Advanced key) ......................................................................... 42
Immobilizer ............................................................................................................................................................. 45
Electronic Steering Column Lock Control Module J764 ....................................................................................... 46
Electrical rear spoiler ............................................................................................................................................. 47
Overhead module ................................................................................................................................................... 48
Interior light ............................................................................................................................................................ 50

Infotainment.................................................................................... 52
Overview of versions ............................................................................................................................................... 52
Second-generation MIB High ................................................................................................................................. 54
MMI radio ................................................................................................................................................................ 55
MMI radio with connectivity package .................................................................................................................. 56
MMI Navigation plus .............................................................................................................................................. 57
Audi connect ........................................................................................................................................................... 58
Networking .............................................................................................................................................................. 59
Display and operating concept .............................................................................................................................. 60
Control panel ........................................................................................................................................................... 61
Sound systems ........................................................................................................................................................ 63
Antenna overview ................................................................................................................................................... 66

Self study programs......................................................................... 70
Knowledge Assessment................................................................... 71

This eSelf Study Program teaches a basic knowledge of the design and functions of new models,
new automotive components or technologies.
It is not a Repair Manual! All values given are intended as a guideline only.
For maintenance and repair work, always refer to the current technical literature.

Note

Reference
iii

iv

Introduction
All versions of the new Audi TT come with a generous range
of standard equipment.
On the infotainment front, customers can choose from a
wide range of options. The connectivity package features
the MMI touch system incorporating a touch-sensitive
touch pad. At the top of the modular range is the MMI
Navigation plus with its large flash memory, two card
readers, DVD drive, Bluetooth interface and voice control
system. The T30 chip from the Tegra 3 series by market
leader Nvidia, which is installed in the new-generation
Modular Infotainment System, controls all in-car navigation and multimedia functions and displays content in the
Audi virtual cockpit.

The Audi connect system complements the MMI Navigation
plus perfectly – it connects the new Audi TT to the internet
using the high-speed LTE transmission standard. The integrated Wi-Fi hotspot means passengers can surf the internet and E-mail as they please, while the driver can rely on
the customized Audi connect services.
An optional Bang & Olufsen Sound System features a
14-channel amplifier and 12 loudspeakers; the bass
loudspeakers in the doors are illuminated discretely by
fiber optics.
Highly intelligent assistance systems make driving the new
TT an even more pleasurable experience. As an option, the
car can be equipped with Audi side assist, which uses rearmounted radar sensors to help drivers change lane more
safely.

1

Power supply
Battery
The battery of the Audi TT is housed in the rear of the
vehicle. Battery size and type are dependent on engine
version, trim and country specification.

Battery Monitoring Control Module J367 (BDM) is mounted
on the negative battery terminal. If the battery is replaced
it must be adapted (encoded) to J367 using the VAS Scan
Tool.

Attached to the battery positive terminal is the main fuse
box and Battery Interrupt Igniter N253.

Positive battery cable
The positive battery cable is an advanced aluminum ribbon
cable with high flexural rigidity. It is coated with a red
plastic insulating layer.

Apart from its light weight, this type of main battery lead
has other advantages as well:
• Because of the shape and rigidity of the rail, there is no
need for additional routing devices.
• No cable ducts are required.
• More efficient use is made of available space.

2

629_002

The positive battery cable leaves the battery positive terminal as a flexible, round-section lead. It is routed out of the
vehicle interior through a cable sleeve, becoming a ribbon

cable in the rear axle area and ending at the jump start
terminal on the left hand side of the engine compartment.
From there, wires go to the E-box, starter and alternator.

3

Fuses, fuse holder and jump start terminal
In addition to standard flat fuses, space saving mini-fuses
and circuit breakers (thermal fuses), the TT uses the new
J-Case fuse like those of the 2015 Audi A3.

These fuses are, like the standard and mini fuses, identified
in different colors.

J-Casefuses

629_003

Fuse rail on the E-box
Fuses are marked “SA” in
the Wiring Diagrams.

Jump start connection

Several fuses with different ratings are grouped together to form a fuse
strip or multi-fuse. The fuses protect the alternator, electromechanical
power steering and the radiator fans. In the event of a fault, the complete
multi-fuse must be replaced.

4

E-box with fuses and relays
Fuses are marked “SB” in
the Wiring Diagrams.

Fuse holder at battery positive terminal. Fuses are marked “S” in the
Wiring Diagrams. Battery Interrupt
Igniter N253 also located here.

629_004

Fuse holder and relay panel under
the instrument panel.
Fuses are marked "SR" in the Wiring
Diagrams.
Fuse holder and relay panel under
the instrument panel, left.
Fuses are marked “SC” in the Wiring
Diagrams.

5

Networking
Topology
Light Switch E1

Alarm Horn
H12

Anti-theft Alarm
System Sensor
G578

Garage Door
Opener Control
Head E284

Wiper Motor
Control Module
J400

Rain/Light
Recognition Sensor
G397
Humidity Sensor
G355

Vehicle Electrical
System Control
Module 1
J519

Garage Door
Opener Control
Module
J530

Steering Column
Electronics Control
Module
J527

Drive Multi-contour
Seat Control Module
J873

Driver Door Control
Module
J386

Front Passenger
Multi-contour Seat
Control Module
J872

Front Passenger
Door
Control Module
J387

Driver Volume
Control
E67

Left Head Area
Heater
Control Module
J846

Electronic Steering
Column Lock
Control Module
J764

Data Bus On Board Diagnostic Interface J533

Right Head Area
Heater
Control Module
J847

Access/Start
Authorization
Control Module
J518

Selector Lever
Sensor System
Control Module
J587

ABS/ESP Control
Module
J104

Engine Control
Module
J623

Electronic Damping
Control Module
J250

Convertible Top
Control Module
J256
(Roadster only)

Multi-media
System Control
Head
E380

Front A/C Display
Control Head 1
E774

Climatronic Control
Module
J255

DSG Transmission
Mechatronic
J743

All Wheel Drive
Control Module
J492

Front A/C Display
Control Head 2
E775

Fresh Air Blower
Control Module
J126

Structure Borne
Sound Control
Module
J869

Power Steering
Control Module
J500

Front A/C Display
Control Head 3
E776

Refrigerant System
Pressure Sensor
G805

Airbag Control
Module
J234

Parking Aid Control
Module
J446

Front A/C Display
Control Head 4
E777

Humidity Sensor in
Fresh Air Intake
Duct
G657

Front A/C Display
Control Head 5
E778

6

Instrument Panel
Control Module
J285

Air Quality Sensor
G238

Passenger
Occupant Detection
System Control
Module J706

The topology shows all control modules with connectivity
to the bus systems.

Some of the control modules shown here are optional or
country-specific equipment or due to be introduced at a
later date.

Digital Sound
System Control
Module
J525

Automatic High
Beam Assist
Control Module
J844
or

Information
Electronics Control
Module 1
J794
Rearview Camera
System Control
Module
J772

Driver Assistance
Systems Front
Camera
R242
Seat Belt Microphone Control
Module
J886
Lane Change
Assistance Control
Module
J769

Battery Monitoring
Control Module
J367

Lane Change
Assistance Control
Module 2
J770

Headlamp Range
Control Module
J431
Data Link Connector

or

Alternator
C

Cornering Lamp and
Headlamp Range
Control Module
J745

Multi-Function
Steering Wheel
Control Module
J453

Left LED Headlamp
Power Output
Module 1
A31

Right LED Headlamp
Power Output
Module 1
A27

Left Headlamp
Power Output
Stage
J667

Right Headlamp
Power Output
Stage
J668

Parallel Parking
Assistance Control
Module
J791

or

631_062

Key:
Powertrain CAN bus

Infotainment CAN bus

LIN bus

Convenience CAN bus

Diagnostics CAN bus

Sub-bus systems

Extended CAN bus
"OR" configuration

Suspension CAN bus
Modular infotainment system (MIB)

MOST bus

7

Overview of bus systems

Bus system

Cable
color

Configuration

Max. data transfer rate

Property

Powertrain CAN
bus

Electrical
two-wire bus system

500 kbit/s

Not single wire
capable

Convenience CAN
bus

Electrical
two-wire bus system

500 kbit/s

Not single wire
capable