SSP 990253

eSelf Study Program 990253
The 2016 Audi TT Roadster
i
Audi of America, LLC
Service Training
Created in the U.S.A.
Created 5/2015
Course Number 990253
©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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or otherwise, nor may these materials be modified or reposted to other
sites without the prior expressed written permission of the publisher.
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 2: 6/2015
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Introduction ..................................................................................... 1
Body.................................................................................................. 6
Body reinforcements .............................................................................................................................................. 8
Convertible top................................................................................ 10
Overview ................................................................................................................................................................10
Components ..........................................................................................................................................................12
Convertible top control................................................................... 14
Installation locations ...........................................................................................................................................14
Displays and operation of convertible top ..........................................................................................................16
Convertible top opening sequence ......................................................................................................................22
Convertible top closing sequence .......................................................................................................................24
Components ..........................................................................................................................................................28
Wind deflector ......................................................................................................................................................37
Emergency operation of convertible top ............................................................................................................40
Passive safety.................................................................................. 42
Components ..........................................................................................................................................................42
System overview ...................................................................................................................................................44
Engine and power transmission ..........................................................................................................................46
Chassis............................................................................................. 47
Electrical system............................................................................. 48
Installation locations of control modules ..........................................................................................................49
Topology ................................................................................................................................................................50
Control modules ...................................................................................................................................................52
Climate control................................................................................ 54
Introduction ..........................................................................................................................................................54
Seat systems .........................................................................................................................................................55
Head area heater ..................................................................................................................................................56
Flow-through ventilation of the cabin ................................................................................................................57
Service............................................................................................. 58
Inspection and maintenance ...............................................................................................................................58
Self study programs........................................................................ 60
Knowledge assessment................................................................... 61
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
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iv
Introduction
The third generation TT Roadster marks the continuation of
a great tradition. The designers at Audi have re-interpreted
the styling of this classic vehicle and complemented it with
innovative new components.
Like the 2016 TT Coupe, the Roadster will feature a 2.0L
TFSI engine and DSG transmission as well as quattro.
The flat and taut top of the TT Roadster provides a clear
contrast with the body and is defined by the short side
window design that is typical of the Roadster. The TT is
equipped with an electrically operated fabric top.
The body shell of the new TT Roadster represents a new
evolution of the Audi Space Frame (ASF) based on the
modular transverse matrix (MQB). Compared with the
Coupe, the body of the Roadster has been modified in key
areas. Ultra-high strength components made from hotstamped steel reinforce the front end and the occupant cell
floor. Aluminium is used in the cell as well as in all outer
skin parts and attachments in the form of three typical
semi-finished products – die-cast nodal elements, extruded
profiles and sheet metal.
The new TT Roadster combines the dynamic ride of a sports
car with the driving experience of an open top two-seater.
This was accomplished in part by struts in the underbody
and body that enhance torsional rigidity and thus ride
comfort.
The innovative new Audi virtual cockpit will also be standard on the TT Roadster. This new display and control
concept received the Car Connectivity Award and the Interior Innovation of the Year at the 2014 Automotive Interiors Expo Awards.
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1
Here is a quick summary of the technical highlights of 2016
TT Roadster explained in detail in this Self-Study Program.
Engine
Assistance systems
Four cylinder engine with turbocharger:
• 2.0L TFSI 220 hp (169 kW).
The following systems are optionally available:
• Audi side assist.
• Park assist system with ambient display.
Climate control
Automatic climate control air conditioning system. All
control functions are integrated into the air vents. The air
conditioning system has small displays which show the
selected setting.
The Audi TT Roadster is optionally available with sport
seats including a head space heater.
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Body
Power transmission
Audi Space Frame (ASF) body made from aluminum and
steel with high-strength and ultra-high-strength steel
alloys, die-cast aluminum nodal elements and side
panels.
Full-time quattro drive – systematically developed and
refined for the TT – with electro-hydraulic multiplate clutch
on the rear axle. It is possible to customize the all-wheel
drive characteristics with Audi drive select.
Internal steel ribbing ensures the aluminum sills have
high-strength properties. V‑shaped steel struts reinforce
the zones underneath the engine compartment and the
luggage compartment, and connect the axle carriers.
Occupant safety systems
Rigid rollover bars protect the occupants in the event of a
rollover. The front side airbags (head-thorax airbags)
protect the occupants in the event of a side impact.
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Convertible top
Electrically actuated convertible top. Graphical display of
convertible top operation in Audi virtual cockpit. A power
operated wind deflector improves ride comfort when
driving with the top down.
Displays and operation
Fully digital Audi virtual cockpit instrument cluster with
dynamic animations and graphics. New MMI control panel
on the center tunnel console with 2 toggle buttons. On
each side of the central rotary pushbutton, there are two
buttons together with a main menu button and a back
button. Touch-sensitive touch pad on the top of the rotary
pushbutton.
Chassis
Electro-mechanical progressive steering, where the steering ratio becomes more direct with increasing steering
input.
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53.34 in (1355 mm)
Dimensions
37.20 in (945 mm)
61.88 in (1572 mm)
61.10 in (1552 mm)
72.12 in (1832 mm)
77.40 in (1966 mm)
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38.
31.88 in (810 mm)
81
in
(98
6m
m) 3
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34.80 in (884 mm)
98.62 in (2505 mm)
31.02 in (788 mm)
164.44 in (4177 mm)
631_067
4
39.36 in (1000 mm)
53.62 in (1362 mm)1
57.08 in (1450 mm)2
39.88 in
(1013 mm)
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Exterior dimensions and weights
Interior dimensions and other specifications
Length in (mm)
164.44 in (4177 mm)
Front cabin width in (mm)
57.08 in (1450 mm)2)
Width in (mm)
72.12 in (1832 mm)4)
Front headroom in (mm)
38.81 in (986 mm)3)
Height in (mm)
53.34 in (1355 mm)
Front shoulder width in (mm)
53.62 in (1362 mm)1)
Front track width in (mm)
61.88 in (1572 mm)
Rear headroom in (mm)
33.77 in (858 mm)
Rear track width in (mm)
61.10 in (1552 mm)
Through-loading width in (mm)
39.36 in (1000 mm)
Wheelbase in (mm)
98.62 in (2505 mm)
Load sill height in (mm)
31.88 in (810 mm)
Curb weight lb (kg)
3384 (1535)5)
Drag coefficient cw
0.306)
Gross vehicle weight lb (kg)
3990 (1810)5)
Capacity of fuel tank in gal (L)
14.5 gal (55 l)
Shoulder room width
Elbow room width
3)
Maximum headroom
4)
Excluding mirror
5)
With 2.0l TFSI engine, quattro, 6-speed DSG transmission
6)
When the convertible top is closed
1)
2)
All dimensions are given in inches and millimeters and refer to the unladen weight of the vehicle.
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Body
The bodyshell of the TT Roadster is based on the modular
transverse matrix (MQB). Ultra high strength components
made from hot-stamped steel reinforce the front end and
the occupant cell floor. Aluminum is used in the cell as well
as in all outer skin parts and attachments in the form of
three typical semi-finished products - die-cast nodal elements, extruded profiles and sheet metal. In total, 50%
cold formed steel and 11% hot formed steel are used in the
new TT Roadster.
Outer skin
The entire outer skin of the Audi TT Roadster is made of
aluminum. This includes:
•
•
•
•
•
Front fenders.
Side panels.
Hood attachments.
Doors.
Trunk lid.
Key:
Sheet aluminum
Die-cast aluminum
Aluminum section
Ultra-high strength steel (hot-formed)
Advanced high strength steel
High strength steel
Low strength steel
6
The 37% share of aluminum is distributed as follows:
• 21% sheet aluminum.
• 8% die-cast aluminum.
• 8% aluminum profile.
Altogether, the body of the Audi TT Roadster including
attachments weighs 741lbs (336kg). The crash safety
performance of the TT Roadster is formidable due to the
intelligent hybrid construction concept.
Design
The occupant cell of the Audi TT Roadster weighs 119.04 lb
(54 kg). It is an aluminum lattice structure where 10 castings form the nodal points of the bodyshell.
There are large nodal elements at the A-pillars that connect
the sill, window cross member and the upper longitudinal
section in the front end.
The following components are made of die-cast aluminum:
•
•
•
•
•
A-pillar.
Top front roof frame nodal element.
Inner B-pillar.
Inner B-pillar connecting part.
Rear roof frame nodal element.
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Body reinforcements
A-pillar
Compared with the Coupe, the body of the TT Roadster has
been modified in key areas. To provide additional stiffening, an inner panel made of high strength steel and a
reinforcing tube are concealed behind the die-cast
aluminum A- pillars.
The reinforcing tube is made from ultra high strength hot
stamped steel. These components offer the occupants a
high level of safety in the event of a rollover.
Diagonal struts
Additional V-shaped steel struts reinforce the front and
rear axle carriers and connect them to the bodyshell. These
supporting measures provide a high level of vehicle rigidity
and help reduce the transfer of vibration to the passenger
compartment.
Diagonal struts
Sound-absorbing pan
The Audi TT Roadster has an aluminum sound-absorbing
pan, which not only reinforces the front end structure, but
also provides added sound insulation.
Sound-absorbing pan
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Rear bulkhead
In the Audi TT Roadster, a solid bulkhead made of two box
profiles separates the occupant cell from the luggage
compartment and replaces the bottom cross member
found on the Coupe. The top section of the bulkhead
houses the steel rollover bars, a well-known and classic
design feature of the Roadster.
Mounting plates seal the openings in the rear bulkhead,
which features through-loading as standard.
Door sills of the Audi TT Coupe
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Door sill
The door sills made from extruded aluminum profiles give
extra strength.
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Door sills of the Audi TT Roadster
Due to the absence of a roof structure, it is necessary for
the door sills of the TT Roadster to be thicker and be integrated into the structure by means of die-cast nodes in the
B-pillar. The modified interior geometry provides much
higher strength.
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Convertible top
Overview
The new Audi TT Roadster features a classical soft top with
a Z fold system. While opening, the soft top forms a ‑Z
shape as it folds together into a flat package, which is
stored in an aluminum tray behind the seats.
With parts made from magnesium, aluminum, steel and
plastic, the soft top weighs just 85.98 lb (39 kg).
A feature of this space-saving folding system is that the
front section of the soft top folds over the fabric as a cover
and locks flush with the vehicle body.
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Convertible top fabric
The convertible top fabric of the TT Roadster provides
extremely good thermal insulation in addition to reducing
noise levels - especially in the airflow frequency range.
The noise level in the interior has been reduced (depending
on frequency) by up to 6 dB compared to the predecessor
model. The radio antennas are integral with the convertible
top and hidden from view.
Because of the elaborate clamping system of the roof, it is
held completely taut even at high speeds and presents a
homogeneous look that conceals the cross bows.
Insulation
Interior lining
Convertible top fabric
Bag
Convertible top bow tube
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Rear window defroster
The heated glass rear window is a component part of the
convertible top cover and cannot be replaced individually if
damaged. In this case, the complete cover must be
replaced.
Convertible top flaps
The side openings for the soft top mechanism drive are
covered by the convertible top flaps, eliminating the need
for a tonneau cover or convertible top box lid.
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Components
Convertible top frame
The main bearing of the convertible top frame is bolted to the
inside of the B-pillar with three bolts on the left and right.
The convertible top linkage includes the following components:
• A front convertible top bow made of magnesium
alloy.
• Three convertible top bow tubes made of precision
steel.
• A tensioning strut made of aluminum.
• Multiple roof side bars and main side bars made of
flat steel.
Two guide belts hold the convertible top bows in position
and two tensioning belts hold the tensioning struts.
2nd bow
Front roof bow
3rd bow
Corner bow
Left guide belt
Tensioning strut
Tensioning straps
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Servicing the convertible top drive
If the gear drive is damaged, a repair kit is available. It
includes two gear segments, the necessary bolts and
threaded bushings. With the repair kit, the gear segments on
the left and right main bearings can be replaced separately.
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Z-folding
Two electric motors (one at each main bearing) rotate
gear segments which in turn pivot the main side bars.
These motors and the roof side bars are designed as a
multi-jointed linkage and ensure that the convertible top
folds in three layers over one another in the convertible
top compartment.
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Wind deflector
To reduce airflow in the interior when the convertible top
is open, the TT Roadster is equipped with an electrically
extendable wind deflector.
It is possible to remove and install the wind deflector, its
support, and Convertible Wind Deflector Motor V186
without removing the convertible top.
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Convertible top control
Installation locations
Here is a summary of the components of the convertible
top system.
Instrument Cluster Control Module J285
(graphical display of convertible top status)
Convertible Top Latch -open- Switch
F294
Convertible Top Latch -closed- Switch
F295
Convertible Top Locking Motor
V223
Convertible Top Front Closed
Position Switch
F202
Convertible Top Open Position Switch
F171
Convertible Top Motor
V82
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Convertible Top Front Lock Switch
F172
Convertible Top Locking Readiness Switch
F542
Glove Compartment Lock Motor
V224
Power Top Operation Switch
E137
Convertible Wind Deflector Switch
E278
Convertible Wind Deflector Motor
V186
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Convertible Top Motor 2
V576
Convertible Top Control Module
J256
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Displays and operation of convertible top
The convertible top of the TT Roadster has an all electric
drive system. It is driven by two electric motors - one on
each side of the vehicle - mounted on the main bearings of
the top. Roof operation is controlled by Convertible Top
Control Module J256.
Basics of convertible top operation
The convertible top can be operated by pressing and
holding Power Top Operation Switch E137 until an opening
or closing cycle is completed. This is referred to as
“manual” operation. The top can also be raised or lowered
when the vehicle is moving by pressing and releasing E137.
This is referred to as “automatic” operation.
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Power Top Operation Switch
E137
Manual convertible top operating cycle
During manual operation, E137 must be actuated continuously while the top operating cycle is in progress. If the
switch is released, the operating cycle stops instantaneously. If the switch is activated again, the cycle is continued. However, Convertible Top Control Module J256 initiates a “soft starting” of Convertible Top Motors V82 and
V576.
The purpose of the “soft start” is to ensure top does not
wobble or shudder when moving but rather that it starts
evenly and smoothly.
Continuing to actuate E137 after the top has been fully
opened or closed causes the side windows to close completely. Windows will stop moving if the switch is released.
Automatic convertible top operation
Automatic operation of the top is initiated when the vehicle
is travelling between 4 - 31 mph (6 - 50 km//h).
E137 must be actuated briefly (for less than 0.5 seconds).
The top will open or close automatically depending on the
direction of the actuation.
If E137 is actuated again during the automatic operation of
the top, the cycle will stop. It can then be restarted by
actuation of E137 again.
Automatic operation of the convertible top is not possible
when the vehicle is stationary or travelling faster than
31 mph (50 km/h).
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Audi virtual cockpit display
There is no separate symbol for the top operating cycle.
Instead, when the operating cycle is started, the top position
is displayed graphically in Audi virtual cockpit. Depending on
the view setting, the displays are positioned either in the
center or at the side.
A curved arrow over the convertible top indicates the direction in which the convertible top is moving:
• Arrow tip pointing backwards: convertible top is
opening.
• Arrow tip pointing forwards: convertible top is closing.
The convertible top is shown in red, as is the case with an
open door.
68.0°F
631_031
European instrument cluster shown.
Display for automatic convertible top operating cycle
Display for discontinued convertible top operating cycle
68.0°F
68.0°F
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During an automatic top operating cycle, an "A" is
displayed at the start of the arrow.
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If no arrow is displayed over the convertible top, the convertible top operating cycle has been initiated but interrupted. The convertible top is therefore currently in an
intermediate position.
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Displays for complete convertible top operating cycle
When the top operating cycle is completed, the status
(opened or closed) is indicated in the display for approximately two seconds and an audible signal sounds at the
same time.
Convertible top operating cycle complete – convertible
top open
Convertible top operating cycle complete – convertible top
closed
68.0°F
68.0°F
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631_034
Displays when convertible top operation is not possible
If the convertible top cannot be operated, it is indicated in
the instrument cluster. An audible signal sounds at the
same time.
A warning is given and one of seven different messages is
displayed.
Warning display
A warning is given if the top is in an intermediate position,
the vehicle is travelling faster than 3 mph (5 km/h) and
there is a static DTC in the fault memory.
In addition to the warning, the yellow central warning lamp
comes on.
Yellow central warning symbol
Display in driver information tab and
warning lamps tab highlighted red
Yellow vehicle/convertible
top icon in the status line
Displayed text
Convertible top:
Fault!
You can continue driving
(limited functionality)
See Owner's Manual
68.0°F
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Message displays
Other reasons why the convertible top cannot be operated
are displayed as messages.
• When messages about the convertible top are displayed,
the yellow central warning lamp is not activated.
• When these messages are displayed, the vehicle/convertible top icon appears in the status line.
• Message texts are not included in the driver information
and warning lamps tab.
If the convertible top is in an end position (open or closed)
and a convertible top operating cycle is initiated in the
same direction as the limit stop, "no" actions are initiated
and no messages are displayed.
This message is displayed if the top is in an end position
(open or closed) and E137 is actuated at a speed higher
than 31 mph (50 km/h). In this situation, a top operating
cycle is not initiated.
Convertible top:
no operation possible.
Speed too high.
68.0°F
631_038
This message is displayed in the following situations:
• If a convertible top operating cycle is active and the
vehicle speed increases to 34 mph (55 km/h). In this
case, the operating cycle is stopped.
• Or: If a convertible top operating cycle is active, the
vehicle speed increases to 34 mph (55 km/h) and the
convertible top still moves into its limit position. For a
list of conditions under which the convertible top still
moves into its limit position at 34 mph (55 km/h) or
higher (refer to page 27).
• Or: If a convertible top operating cycle was active or
discontinued (E137 was released) and the convertible
top is in an intermediate position. The vehicle speed
subsequently increases to at least 31 mph (50 km/h)
and the switch is actuated again. In this case, the convertible top operating cycle is not resumed.
Convertible top:
not in limit position.
Speed too high.
68.0°F
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This message is displayed if E137 is actuated to open the
top and the ambient temperature is below 5 °F (-15 °C).
However, the convertible top can be closed when the
ambient temperature is below 5 °F (-15 °C).
Convertible top:
no operation possible.
Ambient temperature
too low.
68.0°F
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This message is displayed if a DTC is present which prevents
the operation of the top.
Convertible top:
no operation possible.
68.0°F
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This message is displayed if E137 has been actuated with
the ignition on (engine not running) and the battery
voltage is too low. After starting the engine, the top can be
operated again.
Convertible top:
no operation possible.
Engine must be
running.
68.0°F
631_036
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This message is displayed if the circuit breaker (thermal
protection) is active when E137 is actuated.
Convertible top:
no operation possible
68.0°F
631_036
This message is displayed if there is a static DTC in the
Convertible Top Control Module J256 fault memory and a
limit position (open or closed) has been reached when E137
is released.
Convertible top:
Fault!
You can continue driving
68.0°F
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Convertible top opening sequence
To be able to open the convertible top, the following conditions must be met:
• The vehicle must be travelling slower than 31 mph (50
km/h).
• The ignition must be on.
• The ambient temperature must be above 5 °F (-15 °C).
• The battery must have sufficient voltage.
Initial situation: the convertible top is closed
Starting the opening cycle
If all conditions have been met, the opening cycle is initiated
by lifting E137 continuously until the cycle is completed.
If the vehicle is travelling at a speed between 4 - 31 mph
(6 - 50 km/h) the opening cycle can be started by lifting
E137 briefly (less than 0.5 seconds) and releasing.
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Power Top Operation
Switch E137
First, the side windows open a pre-set distance.
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Display in the Audi virtual cockpit
A display then appears showing the vehicle/convertible top
icon and a curved arrow. The arrow tip is pointing backwards.
If the rear window heater is on, it is switched off. The rear
window heater can only be switched on if the top is fully
closed.
68.0°F
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22
Convertible top opening
Next, the catch hook in the upper part of the lock in the
window frame area moves upwards. Then the top moves
back.
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During this movement, the catch hook closes again. Both
the left and right convertible top flaps (actuated by Bowden
cables) close when the top is nearly stowed. The top folds
completely into the top box.
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Finally, the side windows close completely.
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Display in the Audi virtual cockpit
An audible signal as well as a display indicate that the top
operating cycle is complete and the convertible top is fully
open.
68.0°F
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23
Convertible top closing sequence
To be able to close the convertible top, the following
conditions must be met:
• The vehicle must be travelling slower than 31 mph
(50 km/h).
• The ignition must be on.
• The battery must have sufficient voltage.
Initial situation: the convertible top is open
Starting the closing cycle
If all conditions have been met, the closing cycle is initiated
by pressing E137 continuously until the cycle is completed.
If the vehicle is travelling at a speed between 4 - 31 mph
(6 - 50 km/h) the closing cycle can be started by pressing
E137 briefly (less than 0.5 seconds) and releasing.
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Power Top Operation
Switch E137
First, the side windows open a pre-set distance.
631_027
Display in the Audi virtual cockpit
A display then appears showing the vehicle/convertible top
icon and a curved arrow. The arrow tip is pointing forward.
When an automatic top operating cycle is in progress (the
vehicle is moving), an "A" is displayed at the start of the
arrow.
68.0°F
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24
Convertible top closing
The convertible top is lifted out of the convertible top box
and, at the same time, the convertible top flap covers on
the left and right are opened mechanically by Bowden
cables.
631_028
The catch hook moves upwards (1) and the top continues to
close until it is in proximity to the windscreen frame. The
catch hook closes (2), pulling the top onto the windshield
frame, and locks the top in place.
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Display in the Audi virtual cockpit
An audible signal as well as a display indicate that the top
operating cycle is complete and the top is fully closed.
68.0°F
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25
Operating the convertible top with the car key via the lock cylinder
on the driver's door
The convertible top can be opened or closed via the driver's
door locking cylinder.
This can be done using the integrated emergency key or the
so-called wallet key.
Opening
To open the convertible top, the following conditions must
be met:
• The vehicle must not be moving.
• The battery must have sufficient voltage.
• The ambient temperature must be above 5 °F (-15 °C).
To open the convertible top, first unlock the vehicle with
the car key. Then insert the car key into the lock cylinder on
the driver's door and turn it in the "open" direction (1).
If the car key is now turned in the "open" direction again
within 2 seconds and held in this position (2.), the convertible top operating cycle will start. The car key must be kept
held in the "open" position while the convertible top operating cycle is in progress. When the car key is released, the
convertible top operating cycle stops instantaneously. To
resume the convertible top opening cycle, the car key must
again be turned in the "open" direction and held in this
position. If the car key is turned in the "close" direction and
held in this position, the convertible top will close again.
Turn key again within 2 seconds
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Closing
To close the convertible top, the following conditions must
be met:
• The vehicle must not be moving.
• The battery must have sufficient voltage.
Insert the car key into the lock cylinder on the driver's door
and turn it in the "close" direction (1). If the car key is now
turned in the "close" direction again within 2 seconds and
held in this position (2), the convertible top operating cycle
will start.
The car key must be kept held in the "close" position while
the convertible top operating cycle is in progress. When the
car key is released, the convertible top operating cycle
stops instantaneously.
To resume the convertible top operating cycle, the car key
must again be turned in the "close" direction and held in
this position.
If the car key is turned in the "open" direction and held in
this position, the convertible top will open again.
Turn key again within 2 seconds
631_041
Note
When actuating a top opening or closing cycle using the vehicle key, there may be a delay between key movement and the
top beginning to move.
26
Operating the convertible top while driving
The top can be opened while the vehicle is moving up to a
speed of 31 mph (50 km/h).
If the vehicle speed rises to 34 mph (55 km/h) while a top
operating cycle is in progress, the cycle will normally stop
and the driver is alerted by audible and visual warnings.
There are exceptions to this.
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Convertible top operating cycle at high speed
If the vehicle speed rises to 34 mph (55 km/h) while a top
operating cycle is in progress, the top behaves differently
when opening or closing.
Convertible top:
no operation possible.
Speed too high.
Convertible top:
not in limit position.
Speed too high.
68.0°F
68.0°F
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631_038
Opening
Closing
If the top is opening and the vehicle speed increases to
34 mph (55 km/h) or higher, the operating cycle is not
interrupted. The top opens fully.
If the top is closing and the vehicle speed increases to
34 mph (55 km/h) the operating cycle is interrupted. The
top stops in its current position. The operating cycle cannot
be restarted until the vehicle speed drops to below
31 mph (50 km/h).
Exception:
Exception:
A top operating cycle is discontinued if the vehicle has
reached a speed of 34 mph (55 km/h) and the top has still
not left the front zone. The determination that the top is still
in the front zone is done by the signal of Convertible Top
Front Closed Position Switch F202. In this situation, the
opening cycle is discontinued or not initiated. The convertible top operating cycle cannot be restarted until the vehicle
speed has dropped below 31 mph (50 km/h).
The convertible top closing cycle is not interrupted when
the vehicle speed increases to over 34 mph (55 km/h) if
Convertible Top Locking Readiness Switch F542 has been
actuated. In this situation, the top will close completely.
27
Components
Power Top Operation Switch E137
Power Top Operation Switch E137 is used to initiate the
opening and closing cycles of the convertible top.
If E137 sends an “actuated” signal continuously for more
than approximately 60 seconds, an implausible signal
message is registered in the DTC memory of Convertible
Top Control Module J256. This can occur for example if the
switch is inadvertently actuated by an object (cell phone,
purse, etc.). Once the switch is free, the DTC entry changes
to “sporadic” and it is possible to operate the top.
631_007
Power Top Operation
Switch E137
Convertible top flaps
The left and right hand convertible top flaps are mechanically operated by Bowden cables.
When the top is open, the flaps conceal the main bearings
and operating motors. When the top is closed, the flaps
are open.
631_013
Left hand convertible top flap
28
Right hand convertible top flap
Convertible Top Locking Motor V223
Convertible Top Locking Motor V223 is mounted to the
front roof bow of the convertible top. It is mounted on a
bracket with Convertible Top Latch -Open- Switch F294,
Convertible Top Latch -Closed- Switch F295, the catch hook
and a permanent magnet.
If the permanent magnet is within the detection range of
Convertible Top Locking -Readiness- Switch F542 (see page
31), Convertible Top Control Module J256 instructs Convertible Top Locking Motor V223 to open or close the catch
hook depending on the direction of actuation.
View from above
Shift link
Mounting
bracket
Convertible Top Locking
Motor V223
Permanent
magnet
Catch hook
Convertible Top Latch -OpenSwitch F294
Convertible Top Latch -ClosedSwitch F295
Electrical connector
631_049
View from below
Mounting
bracket
Insertion point for crank used
during emergency closing
procedures
Catch hook
Convertible Top Locking Motor
V223
631_060
29
Convertible Top Latch -Open/Closed- Switches F294 and F295
F294 and F295 are micro-switches mounted to the bracket
of Convertible Top Locking Motor V223.
Convertible Top Latch -Open- Switch
F294 – actuated
A shift link is mounted to Convertible Top Locking Motor
V223 and moves as the motor rotates. If V223 has moved
to the point where the shift link fully opens the catch hook,
the shift gate will also actuate F294. F294 sends a signal to
Power Top Control Module J256 to indicate the catch hook
is open.
If V223 has moved to the point where the shift link fully
closes the catch hook, the shift link will also actuate F295.
F295 sends a signal to Convertible Top Control Module
J256 to indicate the catch hook is closed.
Shift link
631_050
Convertible Top Latch -Closed- Switch
F295 – actuated
631_051
30
Convertible Top Locking Readiness Switch F542
F542 is integrated in the convertible top latch assembly on
the windshield header.
A permanent magnet is mounted to the bracket for Convertible Top Locking Motor V223. If the top is in the front
position and the permanent magnet is within the detection
range of F542, Convertible Top Control Module J256
instructs Convertible Top Locking Motor V223 to open or
close the catch hook (depending on the desired direction of
the top).
Design
F542 is a reed sensor. It consists of a glass tube containing
fused ferromagnetic contact tabs. In its rest state, the
contact tabs are spaced apart. When a magnetic field acts
on the reed sensor, a North and South pole form on the
contact tabs and they attract each other closing the reed
sensor.
Convertible top lock latch assembly
on windshield header
Convertible Top Locking Readiness
Switch F542
Magnetic field of
permanent magnet
Electrical connector
631_054
Catch hook
Convertible Top Front Lock Switch F172
Permanent magnet in the mounting bracket
of Convertible Top Locking Motor V223
Rocker switch
F172 is a micro-switch integrated with the top latch lock
mechanism on the windshield frame header.
When the catch hook is fully engaged inside the lock, it
actuates a rocker. This rocker actuates F172. When actuated, F172 sends a signal to Convertible Top Control
Module J256 to indicate the catch hook is fully engaged in
the lock.
Catch hook
Convertible Top Front Lock Switch
F172
631_053
31
Power Top Control Module J256
Convertible Top Control Module J256 is installed in the left
rear corner of the luggage compartment behind a trim
panel. It is responsible for the operation and diagnostics of
the convertible top system and can be accessed using the
VAS Scan Tool under Address Word 26.
J256 is a participant of the Convenience CAN bus. It
receives and evaluates information from its system sensors
and other bus users and controls the actuators accordingly.
631_045
In luggage compartment, on left:
Convertible Top Control Module
J256
Glove Compartment Lock Motor V224
Glove Compartment Lock Motor V224 is discreetly wired to
Convertible Top Control Module J256. When the vehicle is
locked or unlocked, Vehicle Electrical System Control
Module 1 J519 places that information on the CAN bus.
When J256 receives this information, it instructs the glove
compartment to lock or unlock depending on the position
of the convertible top. J256 also monitors V224 for short
and open circuits.
631_046
In glove compartment lid:
Glove Compartment Lock Motor V224
32
Convertible Top Front Closed Position Switch F202
F202 is a Hall effect sensor installed on the stationary part
of the main bearing of the convertible top frame on the left
hand side of the vehicle.
F202 is actuated by ferromagnetic metals. When the convertible top mechanism comes within the detection range
of the Hall effect sensor there is a change in its voltage.
Convertible Top Control Module J256 evaluates this signal
and detects that the convertible top is in its fully closed
position.
Convertible Top Front Closed Position
Switch
F202
631_048
Convertible Top Open Position Switch
F171
Convertible Top Open Position Switch F171
Like switch F202, Hall sensor Convertible Top Open Position
Switch F171 is installed on the stationary part of the main
bearing of the convertible top frame on the left hand side
of the vehicle.
It functions the same as F202. When the convertible top
mechanism comes within the detection range of the Hall
effect sensor there is a change in its voltage. Convertible
Top Control Module J256 evaluates this signal and detects
that the top is open and stowed in the convertible top box.
33
Convertible Top Motor V82 and Convertible Top Motor 2 V576
Convertible Top Motors V82 and V576 are mounted on the
left and right side of the respective top main bearings. An
additional gear is flange-mounted to each motor.
On left hand side of vehicle:
Convertible Top Motor V82r
The additional gears control the movement of the top. In
addition, each motor has two integral Hall effect sensors.
The sensors register both the speed and direction of the
motors.
On right hand side of vehicle:
Convertible Top Motor 2 V576
631_047
Integrated Hall effect sensors
The Hall effect sensors of the motors cannot be replaced
separately. In the event of failure, the motor must be
replaced.
Convertible Top Control Module J256 monitors the data
generated by the Hall sensors compares the values of both
motors.
Convertible top:
Fault!
You can continue driving
(limited functionality)
See Owner's Manual
Convertible top:
Fault!
You can continue driving
68.0°F
631_036
This message is displayed when the convertible top reaches
its limit position.
34
If J256 detects a difference of approximately 65 pulses
between the two motors (see page 36), the operating cycle
is disabled in the current direction of travel. The driver is
alerted by audible and visual warnings. However, the top
may be operated in the opposite direction. If a difference is
also detected, the convertible top will stop and not operate
further. Again the driver is alerted by audible and visual
warnings.
68.0°F
631_039
This warning is displayed when the convertible top is in an
intermediate position.
Effects of signal loss
If one of the four Hall effect sensors fails, it is still possible
to operate the top. A DTC is registered in the Fault Memory
of J256 but no messages are displayed in the instrument
cluster. If two of the sensors fail, operation of the top is no
longer possible.
Installation of the motors
Convertible Top Operating Motors V82 and V576 are identical. However, when installed in the vehicle, they turn in
different directions. The determination if a motor is on the
left or right side of the vehicle is accomplished by pinning
out the connectors differently.
Convertible Top Operating Motor V82 is connected to positive (+) at PIN 10 while Convertible Top Operating Motor
V576 is connected to negative (-) at PIN 10.
Key:
J256
V82
V576
Convertible Top Control Module
Convertible Top Operating Motor
Convertible Top Operating Motor 2
631_052
Thermal cutout
Both operating motors are protected against overload by a
thermal cut-out. Convertible Top Control Module J256
monitors the run-time of the motors and can switch them
off if required.
The number of top operating cycles until the thermal
cut-out is activated depends on:
• Ambient temperature.
• Battery voltage.
• Ease of movement of the convertible top mechanism
(tolerances).
Convertible top:
no operation possible
68.0°F
631_036
Activation
The thermal cut-out is activated in two stages depending
on power consumption.
Stage 1:
Occurs if the top has been in continuous operation between
60 and 120 seconds from a closed position and has not
opened. There is a delay period of five minutes until the top
can be operated again.
Stage 2:
Occurs if the convertible top has been in continuous operation for between 70 and 140 seconds. The momentary
position of the convertible top is irrelevant. After stage 2,
there is a delay of 8.5 minutes until it is again possible to
operate the convertible
top.
35
Initialization of the motors
The position and speed of the convertible top motors is
recorded by integral Hall effect sensors in each motor. The
revolutions of the motors are counted by using counting
pulses. The duration of a complete opening or closing
sequence of the convertible top is approximately 1300
pulses. A deviation of 65 pulses will register a DTC in the
control module.
A deviation in pulses can occur for the following reasons:
• The number of pulses of both motors may deviate from
one another during the operating time of the convertible
top due to the convertible top moving back and forth
several times without reaching an end position.
• No further pulses are counted after J256 has entered
sleep mode. If forces act on the convertible top in this
mode and the convertible top is in an intermediate
position, the convertible top may collapse into itself
depending on its position. In certain situations its own
weight may be enough to cause this. Depending on the
position of the convertible top after collapsing, J256
may not be able to detect the current position of the
motors.
631_078
If the vehicle is parked with the top down, the motors are
initialized when the ignition is switched on and the vehicle
moves forward at a speed greater than about 3.72 mph (6
km/h). If the vehicle is parked with the top closed, the
system is initialized when the ignition is switched on.
Initializing the motors when they are in end positions (top
fully open or fully closed) resets the start of pulse counting
to a defined initial value. This eliminates irrelevant pulse
deviations during normal top operating cycles.
Collapsing of the convertible top
If the convertible top is in an intermediate position, it may
collapse depending on its position.
• The ignition is off and Convertible Top Control Module
J256 enters sleep mode.
• The ignition is off and the E137 is pushed or pulled for
about 5 seconds.
631_059
Note
Caution: do not reach into the convertible top linkage or other moving parts at any time. There is a danger of injury.
36
Wind deflector
The wind deflector reduces air turbulence in the passenger
compartment and thus enhances ride comfort.
It can be manually retracted and extended (by continuously
pushing or pulling the switch) and retracted in automatic
mode (by briefly touching the switch).
631_010
Operation
The wind deflector is controlled by Convertible Wind
Deflector Switch E278. It can only be extended or retracted
if the convertible top is fully open.
If the wind deflector is extended when the top is closed, it
will automatically retract. This allows “one touch” operation with Power Top Operation Switch E137 when closing
the top.
631_011
Power Top Operation Switch
E137
Convertible Wind Deflector Switch
E278
37
Components
Convertible Wind Deflector Switch E278
E278 operates the wind deflector in both directions. It is
located in the center console to the right of Power Top
Operation Switch E137.
631_012
Manual operation
Automatic operation
During manual operation of the wind deflector, E278 must
be continually pushed or pulled. The deflector stops if the
switch is released. If the switch is actuated again, the
deflector continues in the corresponding direction.
The wind deflector can be retracted automatically but
cannot be raised. Automatic operation happens when E278
is pressed briefly (less than 0.5 seconds). In this situation,
the deflector retracts automatically. If E278 is pushed
again during automatic operation, it stops. Movement can
be resumed by pressing the switch again. It is similar in
principle to the one-touch lowering of the power windows.
Activation mechanism
Convertible Top Control Module J256 controls E278 and
monitors its actuation time.
If E278 sends an “actuated” signal continuously for approximately 60 seconds, a DTC for an implausible signal is
registered in the fault memory. This can happen if something like a cell phone or purse accidentally presses on the
switch.
Once the interfering object has been removed, the DTC
changes to sporadic and operation of the wind deflector is
possible.
631_061
Convertible Top Control Module J256
38
Convertible Wind Deflector Motor V186
The wind deflector is operated by Convertible Wind Deflector Motor V186. V186 is in turn controlled by Convertible
Top Control Module J256.
Direction of travel
Convertible Wind Break Motor V186
631_044
Thermal cutout
A thermal cut-out is activated if the wind deflector has
been running continuously for about a minute. A seven
minute time-out period is initiated during which the deflector cannot be operated. No message is displayed in the
instrument cluster for this situation.
39
Emergency operation of convertible top
In the event of a malfunction, the convertible top can be
closed manually.
Closing the convertible top
During all stages of the emergency closing DO NOT reach
into the top linkage or other moving parts. There is a risk of
severe injury. When ever possible, the emergency closing
procedure should be done by two people.
Conditions:
• The parking brake must be applied.
• All side windows are lowered.
• The function is deactivated.
Tools required
All tools necessary to perform the emergency closing
procedure are located in the vehicle tool kit.
631_014
1. Separate push rod from ball head in direction of arrow
631_015
2. Raise convertible top flaps
Raise the convertible top flaps and stow the push rod in the
designated recess. Repeat both procedures on the other
side of the vehicle.
631_016
Note
During the entire duration of emergency operation make sure that both covers are fully open and that the push rods have
been stowed in the recess, in order to avoid causing damage when raising the convertible top.
40
3. Undo bolts
4. Lift out the convertible top
Remove the bolt using the hexagon socket wrench from the
tool kit by turning it fully in the direction of the arrow.
Repeat the procedure on the other side.
Lift the convertible top out of the convertible top compartment, if possible with the aid of a second person, and pull
it out completely.
631_017
631_018
5. Place the convertible top on the window frame
6. Remove cover
Push the convertible top in the direction of the arrow onto
the windshield frame.
Remove the cover at the center of the convertible top using
the screwdriver from the tool kit.
631_019
631_020
7. Lock the convertible top
Insert the crank from the tool kit fully into the socket of
Convertible Top Lock Motor V223.
Pull the convertible top down at the side until it is fully
seated on the window frame. Turn the crank in the direction
of the arrow (clockwise) until the convertible top is fully
locked. Then remove the crank.
631_021
Note
During all stages of emergency convertible top operation, there is a risk of trapping hands or causing injury to other persons.
Reference
Please refer to the Owner’s Manual for further information on emergency operation.
41
Passive safety
Components
Depending on country version and trim level, the passive occupant
system in the Audi TT Roadster can have the following components
and systems:
Driver airbag
• Airbag Control Module.
• Driver airbag.
• Front passenger airbag.
• Front side airbags. (head-thorax airbag)
• Knee airbag, driver and front passenger sides.
• Front airbag crash sensors.
• Front crash sensors for side crash detection.
(pressure sensors)
• Rear crash sensor for side crash detection.
(acceleration sensor)
• Front inertia-reel seat belts with pyrotechnic belt pretensioners.
• Front inertia-reel seat belts with active belt force limiters.
• Seat belt warning for all seats.
• Seat belt switches on all seats in the seat belt buckles.
• Seat occupancy sensor in front passenger seat.
• Airbag disabling switch, front passenger side.
• Front passenger airbag OFF and ON warning lamps.
• Driver and front passenger seat position sensors.
• Battery interrupter.
Side airbags (head-thorax airbags)
The side airbags are configured as head-thorax airbags.
The head-thorax airbags are designed to help protect not
only the body, but also the head of the front occupants.
By integrating the side airbags in the front seat backs, the
airbags are positioned in proximity to the front occupants
irrespective of the seat position.
Rollover protection system
The Audi TT Roadster comes equipped with rigid rollover
bars behind the rear seats.
42
Knee airbag
Front passenger airbag
Knee airbag
Side airbag
(head-thorax airbag)
Side airbag
(head-thorax airbag)
631_071
43
System overview
631_006a
44
Equipment
Equipment specifications can vary due to the different
requirements and statutory provisions for car makers in the
various markets.
Key to illustration on page previous page:
E24		
E25		
Driver Seat Belt Switch
Front Passenger Seat Belt Switch
G128		
G179		
G180		
G256		
G283		
G284		
G551		
G552		
G553		
G554		
Front Passenger Occupant Detection Sensor
Driver Side Airbag Crash Sensor
Front Passenger Side Airbag Crash Sensor
Driver Side Rear Side Airbag Crash Sensor
Driver Front Airbag Crash Sensor
Passenger Side Front Airbag Crash Sensor
Driver Belt Force Limiter
Front Passenger Belt Force Limiter
Driver Seat Position Sensor
Front Passenger Seat Position Sensor
J234		
J285		
J533		
J706		
Airbag Control Module
Instrument Cluster Control Module
Data Bus On Board Diagnostic Interface (Gateway)
Passenger Occupant Detection System Control Module
K19		
K75		
K145
Seat Belt Indicator Lamp
Airbag Indicator Lamp
Front Passenger Airbag -disabled- Indicator Lamp
(ON and OFF status of front passenger airbag is indicated)
N95
N131
N132
N153
N154
N199
N200		
N253
N295		
N296		
N490		
N491		
Driver Airbag Igniter
Front Passenger Airbag Igniter 1
Front Passenger Airbag Igniter 2
Driver Seat Belt Tensioner Igniter 1
Front Passenger Seat Belt Tensioner Igniter 1
Driver Thorax Airbag Igniter
Front Passenger Thorax Airbag Igniter
Battery Interrupt Igniter
Driver Knee Airbag Igniter
Front Passenger Knee Airbag Igniter
Driver Airbag Release Valve Igniter
Front Passenger Airbag Release Valve Igniter
T16		
Data Link Connector
Wire colors:
Powertrain CAN bus
Convenience CAN bus
Diagnostics CAN bus
Input signal
Output signal
45
Engine and power transmission
Engine
2.0l TFSI engine (CHHC)
169 kW
6-speed
quattro doubleclutch transmission
0D9
DQ250-6A
Rear axle drive
0CQ
5th generation
Haldex coupling
Breakdown of manufacturer codes:
for example: MQ350-6F
M
D
Q
350
6
F
A
46
Manual transmission
Double-clutch transmission
Transverse mounting
Rated torque capacity
Number of gears
Front-wheel drive
quattro all-wheel drive
Chassis
631_092
The chassis of the Audi TT Roadster is based on that of the
Audi TT Coupe. To meet requirements with regard to static
and dynamic body rigidity, special diagonal struts have been
integrated into the front and rear axles).
In addition, the rear axle sub-frame is rigidly bolted to the
body in quattro models. For visual differentiation, the
TT Roadster comes with a wider range of wheels than the
TT Coupe.
Diagonal struts
631_091
47
Electrical system
The electrical system of the TT Roadster is very similar to
that of the TT Coupe.
Roadster-specific control modules:
•
•
•
•
Convertible Top Control Module J256.
Seat Belt Microphone Control Module J886.
Left Head Area Heater Control Module J846.
Right Head Area Heater Control Module J847.
J869
J104
J794
J500
E380
J255
R242
J234
J518
J743
J285
J745
J533
J764
J623
J519
Key:
E380		
J104		
J234		
J250		
J255		
J256		
J285		
J386		
J387		
48
Multi-media System Control Head
ABS/ESP Control Module
Airbag Control Module
Electronic Damping Control Module
Climatronic Control Module
Convertible Top Control Module
Instrument Cluster Control Module
Driver Door Control Module
Passenger Door Control Module
J492		
J500		
J518		
J519		
J525		
J527
J533		
J587		
J623		
J527
All Wheel Drive Control Module
Power Steering Control Module
Access/Start Authorization Control Module
Vehicle Electrical System Control Module 1
Digital Sound System Control Module
Steering Column Electronics Control Module
Data Bus On Board Diagnostic Interface
Selector Lever Sensor System Control Module
Engine Control Module
J587
Installation locations of control modules
Some of the control modules shown in the overview are
optional and/or country-specific equipment.
Please use ElsaPro for identifying the exact locations of control
modules and their removal and installation instructions.
J387
J769
J250
J847
J886
J492
J525
J772
J846
J770
J843
J256
J386
631_084
J743		
J745		
J764		
J769		
J770		
J772
J794		
DSG Transmission Mechatronic
Cornering Lamp and Headlamp Range Control Module
Electronic Steering Column Lock Control Module
Lane Change Assistance Control Module
Lane Change Assistance Control Module 2
Rearview Camera System Control Module
Information Electronics Control Module 1
J846		
J847		
J869 		
J886		
Left Head Area Heater Control Module
Right Head Area Heater Control Module
Structure-borne Sound Control Module
Seat Belt Microphone Control Module
R242		
Driver Assistance Systems Front Camera
49
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
50
Instrument Panel
Control Module
J285
Air Quality Sensor
G238
Passenger
Occupant Detection
System Control
Module J706
Some of the control modules shown here are optional,
country specific or may 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
Headlamp Range
Control Module
J431
Data Link Connector
or
Lane Change
Assistance Control
Module 2
J770
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
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
51
Control modules
Convertible top control
Designation
Convertible Top Control J256
Equipment
Always installed
Installation location
In left hand side of luggage compartment behind trim panel.
Function
Control and monitor the power-operated convertible top
Address Word
26 – Electronic roof control
Data bus communication
Convenience CAN bus user
Special features
Also controls the power-operated wind deflector
(optional equipment, PR No.: 7S1)
Further information
Page 14
In luggage compartment, on left:
Convertible Top Control Module
J256
631_061
Head area heating system
Designation
Left and Right Head Area Heater Control Modules J846 and J847
Equipment
Optional equipment, PR No.: 9K1
Installation location
In the seat back of each seat
Function
Control the fan and the heating element
Address Word
None – diagnostics via Electrical System Control Module 1 J519
Data bus communication
LIN slave of J519
Special features
• Control modules are combined with the fan and the PTC heating element as a unit.
• Left hand and right hand modules are identical.
Further information
Page 56
PTC heating element
Fan
631_064
52
Seat belt microphone
Designation
Seat Belt Microphone Control Module J886
Equipment
Installation location
Under the center console
Function
Select the best microphone signal and relay the signals to Information Electronics Control
Module 1 J794
Address Word
A6 – microphone control unit
Data bus communication
Infotainment CAN bus user
Seat Belt Microphone Control Module
J886
631_083
For optimal speech communication quality, the
Audi TT Roadster is equipped with three microphones. One
microphone is located in the overhead module, and one
microphone in each of the front seat belts. Three microphone capsules are integrated in each seat belt.
Seat Belt Microphone Control Module J886 always selects
the best microphone signal and relays it via discreet wiring
to Information Electronics Control Module 1 J794.
J886 receives information via the CAN buses to determine
whether the driver or front passenger seat belt is inserted
into the buckle. The CAN connection is also used for diagnostics.
The information received by J886 can result in the following
scenarios (refer to table):
Driver's seat
belt buckle
• Seat belt "inserted" into buckle = seat belt microphone active.
• Seat belt "not inserted" into buckle = microphone in overhead microphone active.
Front passenger's seat
belt buckle
• Seat belt "inserted" into buckle and front passenger airbag active = driver and front passenger microphone
active / signal selection (best signal) through both seat belt microphones.
• Seat belt "inserted" into buckle and front passenger airbag deactivated = only with active driver's seat belt
microphone (interpretation: child seat).
• Seat belt "not inserted" into buckle = only driver microphone active.
Special feature
A relay is built into J886 upstream of the output to Information Electronics Control Module 1 J794.
Terminal 31
Terminal 30
Connection to infotainment CAN
If J886 is faulty or de-energized, the relay connects the
overhead microphone directly to J794.
Information Electronics Control
Module 1
J794
Seat Belt Microphone Control Module
J886
Driver Microphone 1
R224
Front Passenger Microphone 1
R227
Microphone Unit in Front Roof Module
R164
631_090
53
Climate control
Introduction
The climate control system of the Audi TT Roadster is based
on that of the Audi TT Coupe.
The maintenance and repair operations for the climate
control system are also identical to those of the
Audi TT Coupe.
The following components and equipment are identical in
the Audi TT Coupe and the Audi TT Roadster:
On Audi TT Roadster, the following settings may differ
depending on whether the convertible top is open or
closed.
• Heater and air conditioner.
• Water drain.
• With Climatronic Control Module J255:
• Climatronic settings, for example, A/C on/off, temperature settings, fan speed etc.
• Forced ventilation of the cabin.
• Dust and pollen filter.
• The air conditioning system is operated by controls
integrated in the 5 outlets.
Left Temperature Control Door Motor
V158
Front A/C Display Control
Head 1
E774
• With Head Area Heater Control Modules J846 and J847:
• The head area heating system has 3 different selectable settings for fan speed and PTC heating element
output.
Defroster Door Motor
V107
Front Air Distribution Door Motor
V426
Fresh Air/Recirculating Air/
Back Pressure Door Motor
V425
Climatronic Control Module
J255
Front A/C Display Control
Head 5
E778
631_086
Reference
For more information about the air conditioning system, refer to eSelf-Study Program
990153, The 2016 Audi TT Introduction.
54
Seat systems
The following sport seats are available for the Audi TT
Roadster:
• Basic sport seat, manually adjustable.
• Optional multicontour S sport seat with integrated
head restraint and electrical lumbar support.
• Optional multicontour S sport seat with pneumatic
back rest adjustment and pneumatic lumbar support.
The multicontour S sport seats are optionally available with
head area heaters.
Design of the multicontour S sport seat with head area heater
Head Area Heater Control Modules
J846/J847
Seatback side bolster air cushion
left/right
Driver/Front Passenger Multicontour
Seat Control Modules
J873/J872
Driver/Front Passenger Multicontour
Seat Compressors
V439/V440
Driver/Front Passenger Seat Switch
Modules
E663/E664
631_087
55
Head area heater
The head area heater is optionally available for the seat
heater in the Audi TT Roadster.
Vehicles with the head area heaters also have operating
controls and display icons integrated in Front A/C Display
Control Head 1 and Front A/C Display Control Head 5.
Pushing the control operates the seat heater, turning
controls the head area heater (refer to the arrows).
631_088
Outlet
Vehicles with head area heaters can also be identified by
the outlets on the seat back in the neck region. Head Area
Heater Control Modules J846 and J847 are integrated on
the sides of the seat backs of their respective seats.
631_089
Operating cycle of seat heating system and head area heating system
If the seat heater or head space heater is switched on by an
occupant, the following components are activated, one
after the other:
• E774 or E778 sends the setting data for the seat heater/
head area heater to the Climatronic Control Module J255
by LIN data bus.
• J255 sends the signals to Vehicle Electrical System
Control Module 1 J519 by CAN bus.
• Depending on the selection made, J519 activates the
following components:
• Seat heater elements (directly).
• Head Area Heater Control Modules J846 or J847 by
LIN data bus.
Head Area Heater Control Modules J846 and J847
J846 and J847 are identical and assigned to the driver side
or front passenger side by a PIN coding.
Both control modules evaluate the heater setting, the
status of the convertible top (open/closed) and then
control the fan speed and PTC heating element accordingly.
This data is received from Vehicle Electrical System Control
Module 1 J519 via a LIN bus.
PTC heating
element
Fan
631_064
56
Flow-through ventilation of the cabin
Flow-through ventilation of the occupant cell in the Audi TT
Roadster is done through openings in the convertible top
box lining.
The air initially flows through these openings into the
luggage compartment, and then through openings in the
luggage compartment side trims to the ventilation grilles
in the body.
Convertible top box lining
Ventilation grille
631_063
Key recognition
Various climate control settings are saved after switching
off the ignition and assigned to the remote control key in
use.
631_079
Reference
For more information about the car keys, please refer to eSelf-Study Program 970153, The 2016 Audi TT Vehicle Electrics,
Electronics, and Infotainment Systems.
57
Service
Inspection and maintenance
The Audi TT is subject to fixed inspection and maintenance
intervals in the USA.
Oil change service
5000 miles /
1 year
15,000 miles /
2 years
25,000 miles /
3 years
35,000 miles /
4 years
Oil change service
Inspection with oil change
Inspection with oil change
Oil change service
The value indicated for the next oil change is 5,000 miles /
365 days for new vehicles. The next oil change after this is
fixed at 10,000 miles / 365 days.
45,000 miles /
5 years
630_023
2.0l TFSI
Oil change
According to service interval display, between 15,000 km / 1 year and 30,000 km /
2 years depending on driving style and conditions of use.
Inspection
30,000 km / 2 years
Pollen filter change interval
60,000 km / 2 years
Air filter change interval
90,000 km
Brake fluid change interval
Change after 3, 5, ... years
Spark plug change interval
60,000 km / 6 years
Fuel filter change interval
–
Timing gear
Chain (lifetime)
Gear oil change interval1)
60,000 km
1)
S tronic
Note
Always consult ElsaPro for the latest information about maintenance schedules and service procedures.
Note
Always check the Fluid Capacity Chart in ServiceNet for the correct oil specification and fluid level before changing oil. Always
use special tool T40178 when measuring the engine oil level.
58
Notes
59
Self study programs
For more information about the technology of the Audi TT
Roadster, please refer to the following self study programs.
eSelf-Study Program 920243
Service Training
991703
The 2008 Audi TT Vehicle
Introduction
The Audi 1.8L and 2.0L Third Generation
EA888 Engines
920243
The Audi 1.8L and 2.0L Third
Generation EA888 Engines
The 2008 Audi TT
Vehicle Introduction
Self-Study Program 991703
1
eSelf Study Program 960143
eSelf Study Program 990143
960143
The 2015 Audi A3 Running Gear
and Suspension System
The 2015 Audi A3
Running Gear and Suspension System
eSelf Study Program 910153
990143
The 2015 Audi A3 Introduction
eSelf Study Program 970153
910153
Audi Virtual Cockpit
Audi virtual cockpit
i
60
The 2015 Audi A3 Introduction
970153
The 2016 Audi TT Vehicle Electrics,
Electronics, and Infotainment
Systems
2016 Audi TT
Vehicle electrical system, electronics,
and infotainment
i
Knowledge assessment
An On-Line Knowledge Assessment (exam) is Available for this eSelf-Study Program.
The Knowledge Assessment is required for Certification credit.
You can find this Knowledge Assessment at:
www.accessaudi.com
From the accessaudi.com Homepage:
• Click on the “ACADEMY” tab
• Click on the “Academy site” link
• Click on the Course Catalog Search and select “990253 - The 2016 Audi TT Roadster”
Please submit any questions or inquiries via the Academy CRC Online Support Form
which is located under the “Support” tab or the “Contact Us” tab of the Academy CRC.
Thank you for reading this eSelf-Study Program and taking the assessment.
61
990253
All rights reserved.
Technical specifications are
subject to change without notice.
Audi of America, LLC
2200 Ferdinand Porsche Drive
Herndon, VA 20171
62