Audi TT (2007 year). Manual — part 226

37

In all markets except North America, the
Audi TT Coupé ‘07 comes with an upgraded version
of the low tyre pressure indicator previously
featured in the Audi A3. Being an indirect measuring
system, no tyre pressure sensors are installed in
the wheels.

Using a new evaluation method, it is now possible
to detect simultaneous pressure loss to at multiple
wheels. Tyre pressures are monitored
simultaneously using two different concepts.

380_070

Low tyre pressure indicator

38

Electrical system

Topology and networking

Engine control unit

J623

Direct shift gearbox

mechatronics

J743

Selector lever

E313

ABS control unit

J104

Airbag control unit

J234

Four-wheel drive

control unit

J492

Tyre pressure

monitor control unit 2

J793*

Power steering

control unit

J500

Steering angle

sender

G85

Steering column

electronics control

unit

J527

Multi-function

steering wheel control

unit

J453

ECD control unit

(electronically

controlled damping)

J250

Headlight range

control, control unit

J431

Power output module

for left headlight

J667

Power output module for

right headlight

J668

39

382_044

Data bus diagnostic interface

J533

Driver door

control unit

J386

Telephone transmitter

and receiver unit

R36

Front passenger

door control unit

J387

Parking aid

control unit

J446

Convertible top

operation control unit

J256

Auxiliary air

heater control unit

J604

Climatronic
control unit

J255

Convenience system

central control unit

J393

Onboard power

supply control unit

J619

Tyre pressure monitor

control unit

J502**

Digital satellite

radio tuner

R190

Digital sound package

control unit

J525

TV tuner

R78

Radio

R

Control unit with

display for radio and

navigation

J503

CD changer

R41

Control unit with display

in dash panel insert

J285

Diagnostic port

* for tyre pressure monitoring system 2 only (ECE = Europe)
** for tyre pressure monitor only (SAE = North America)

Anti-theft alarm

system sensor

G578

Alarm horn

H12

Wiper motor

control unit

J400

Rain and light

detector sensor

G397

Powertrain CAN bus

infotainment CAN bus

Convenience CAN bus

Dash panel insert CAN bus

Diagnostics CAN bus

LIN bus

Subbus system

Panasonic bus

40

Electrical system

Installation overview - control units