Instruments (roadster) Audi TT 8J

CONTACT CORROSION

Contact corrosion can occur if incorrect fasteners (bolts, nuts, washers, etc.) are used.

For this reason, only fasteners with a special surface coating are used.

In addition, rubber or plastic parts and adhesive consist of non-conductive materials.

If there are doubts as to whether parts are suitable or not, use new parts.

Note

1. We only recommend original replacement parts, they have been tested and are compatible with aluminum.
2. We recommend using Audi accessories.
3. Damage resulting from contact corrosion is not covered by warranty.

DATA BUS ON BOARD DIAGNOSTIC INTERFACE -J533

General Information

1. Data Bus On Board Diagnostic Interface interlinks the different CAN bus systems in the vehicle.
2. It transmits data from, for example, the engine control module (drivetrain CAN bus) to the instrument cluster (instrument cluster CAN bus).
3. Fault finding is done in "Guided Fault Finding" using the Vehicle diagnostic tester.
4. Repairing CAN Bus lines, refer to Wiring Harnesses and Connectors, Repairing in «General Information»(/audi/tt/8j-2006-2010/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-roadster) and refer to «WIRING HARNESSES AND CONNECTORS, REPAIRING»(/audi/tt/8j-2006-2010/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-general-information-roadster) .

Scheme 33

1. Front Ashtray
2. Cigarette Lighter Illumination -L28- Is a part of the cigarette lighter -U1-.
3. Cigarette Lighter -U1- Removing and installing, refer to «CIGARETTE LIGHTER -U1»(/audi/tt/8j-2006-2010/remont/gauges-instrument-panels/#instruments-roadster__cigarette-lighter-u1) .
4. Cigarette Lighter
5. Blind Cover

COOLANT TEMPERATURE SENSORS -G62- / -G83-, CONNECTOR ASSIGNMENT

Engine Coolant Temperature (ECT) Sensor -G62

Scheme 34

The ECT Sensor sits on coolant connector adapter on left of cylinder head.

Carefully release and disconnect 2-pin electrical connector -arrow-.

Terminal assignment of the 2-pin harness connector at ECT sensor

Scheme 35

1. Wire connection from ECT Sensor to engine control module
2. Sensor ground (GND)

Engine Coolant Temperature (ECT) Sensor on Radiator -G83

Scheme 36

The ECT Sensor (on Radiator) sits on front of engine.

Carefully release and remove 2-pin electrical connector -arrow-.

2-pin connector assignment on ECT Sensor on Radiator

1. Wiring connection from ECT Sensor to engine control module
2. Sensor ground (GND)

COOLANT TEMPERATURE SENSOR -G62-, CONNECTOR ASSIGNMENT

Engine Coolant Temperature (ECT) Sensor -G62

Scheme 37

The ECT Sensor is located on the left side of the cylinder head.

Disconnect electrical harness connector -1- at ECT Sensor.

Note. Disregard item -2-.

Terminal assignment of the 2-pin harness connector at ECT Sensor

1. Sensor ground (GND)
2. Wire connection from ECT Sensor to engine control module

COOLANT TEMPERATURE SENSOR -G62- / -G83-, CONNECTOR ASSIGNMENT

Engine Coolant Temperature (ECT) Sensor -G62

Scheme 38

The ECT Sensor sits on front left of cylinder head.

Disconnect electrical harness connector -arrow- at ECT Sensor.

Terminal assignment of the 2-pin harness connector at ECT Sensor

1. Wire connection from Engine Coolant Temperature (ECT) Sensor -G62- to engine control module
2. Sensor ground (GND)

Engine Coolant Temperature (ECT) Sensor on Radiator -G83

Scheme 39

The ECT Sensor sits on the bottom left of the radiator.

Disconnect electrical connector -1- on ECT Sensor.

Note. Ignore -arrow-.

2-pin connector assignment on ECT Sensor

1. Wiring connection from ECT Sensor to engine control module
2. Sensor ground (GND)

DATA BUS ON BOARD DIAGNOSTIC INTERFACE -J533-, CONNECTOR ASSIGNMENTS

20-pin Connector

Scheme 40

1. Battery "+" (terminal 30)
2. Battery "+" (terminal 30)
3. Reserved for external diagnosis
4. Reserved for K-lead
5. Comfort CAN bus Low
6. Powertrain CAN bus Low
7. Reserved for shielding
8. CAN Bus instrument cluster Low
9. Diagnostic CAN bus Low
10. CAN-Bus Infotainment Low
11. Ground (GND) "-" (terminal 31)
12. Ground (GND) "-" (terminal 31)
13. Instrument cluster prompt input
14. Terminal 15
15. Comfort CAN bus high
16. Power CAN bus high
17. Reserved for shielding
18. CAN Bus instrument cluster High
19. Diagnostic CAN bus High
20. CAN-Bus Infotainment High

FUEL LEVEL SENSOR -G-, CONNECTOR ASSIGNMENT

The Fuel Level Sensor is located under the right side of the rear seat bench.

Scheme 41

Procedure

Remove rear seat bench. Refer to Removal and Installation .

Unclip right locking flange cover retaining tabs -arrows-.

Disconnect electrical connector -arrow- on locking flange.

Scheme 42

Terminal assignment of the 5-pin harness connector at Fuel Level Sensor -G

Scheme 43

1. Transfer Fuel Pump (FP) -G6- switched positive
2. Fuel Level Sensor -G- ground (sensor ground)
3. Wire connection from Fuel Level Sensor -G- -G- to instrument cluster (fuel gauge)
4. Tank sensor total resistance
5. Transfer Fuel Pump (FP) -G6- ground

Note. On vehicles with 2.0L TFSI engine, pins -2, 3, 4- are looped through Fuel Pump (FP) Control Module -J538-.

FUEL LEVEL SENSOR 2 -G169-, CONNECTOR ASSIGNMENT

The Fuel Level Sensor 2 is at the left under the rear seat bench.

Scheme 44

Procedure

Remove rear seat bench. Refer to Removal and Installation .

Unclip left locking flange cover retaining tabs -arrows-.

Disconnect electrical connector -1- on locking flange.

Scheme 45

Note. Disregard item -2-.

3-pin connector assignment on Fuel Level Sensor 2 -G169

Scheme 46

1. Fuel Level Sensor 2 -G169- ground (sensor ground)
2. Wire connection from Fuel Level Sensor -G- -G- to instrument cluster (fuel gauge)
3. Tank sensor total resistance

INSTRUMENT CLUSTER AND CLOCK RECEIVER OVERVIEW

Note. All warning lamps in instrument cluster are fitted with light-emitting diodes. In case an indicator lamp is malfunctioning, the instrument cluster must be replaced.

Scheme 47

1. Screw 2.5 Nm
2. Instrument Cluster With the instrument cluster control module -J285-. Removing and installing, refer to «INSTRUMENT CLUSTER»(/audi/tt/8j-2006-2010/remont/gauges-instrument-panels/#instruments-roadster__instrument-cluster) .
3. Electrical connector For instrument cluster.
4. Screw 2.5 Nm
5. Gap Cover Removing and installing, refer to Storage Compartments and Covers in «Removal and Installation»(/audi/tt/8j-2006-2010/remont/seats/#interior-equipment-roadster) .
6. Screw 2.5 Nm
7. Electrical Connector For Radio Frequency Controlled Clock Receiver -J489-.
8. Screw 2.5 Nm
9. Radio Frequency Controlled Clock Receiver -J489- Removing and installing, refer to «RADIO FREQUENCY CONTROLLED CLOCK RECEIVER -J489»(/audi/tt/8j-2006-2010/remont/gauges-instrument-panels/#instruments-roadster__radio-frequency-controlled-clock-receiver-j489) .

INSTRUMENT CLUSTER MULTI-PIN CONNECTORS, CONTACT ASSIGNMENT

Blue 32-pin Connector - Midline

Scheme 48

1. Terminal 30
2. Terminal 30
3. Terminal 31
4. Terminal 31
5. CAN Bus diagnosis prompt wire
6. Tank sensor 2 signal (Quattro)
7. Brake pad
8. Oil level
9. Not assigned
10. Not assigned
11. Not assigned
12. Not assigned
13. Not assigned
14. Low brake fluid level
15. Oil pressure switch
16. Not assigned
17. Not assigned
18. Terminal 30
19. Terminal 31
20. Not assigned
21. Low coolant
22. Not assigned
23. Not assigned
24. Ambient temperature
25. Tank sensor 1 signal
26. Tank sensor 2 total resistance (Quattro)
27. Tank sensor 1 total resistance
28. Sensor ground (GND)
29. Diagnostic CAN bus High
30. Diagnostic CAN bus Low
31. Transponder Rx
32. Transponder Tx

Blue 32-pin connector - Highline

1. Terminal 30
2. Terminal 30
3. Terminal 31
4. Terminal 31
5. CAN Bus diagnosis prompt wire
6. Tank sensor 2 signal (Quattro)
7. Brake pad
8. Oil level
9. Radio controlled clock signal
10. Radio controlled clock 5 V
11. Not assigned
12. Not assigned
13. Not assigned
14. Low brake fluid level
15. Oil pressure switch
16. Not assigned
17. Terminal 58d
18. Terminal 30
19. Terminal 31
20. Low washer fluid level
21. Low coolant
22. Not assigned
23. Not assigned
24. Ambient temperature
25. Tank sensor 1 signal
26. Tank sensor 2 total resistance (Quattro)
27. Tank sensor 1 total resistance
28. Sensor ground (GND)
29. Diagnostic CAN bus High
30. Diagnostic CAN bus Low
31. Transponder Rx
32. Transponder Tx

SIGNAL HORNS OVERVIEW

Observe notes on contact corrosion. Refer to CONTACT CORROSION .

Scheme 49

1. Electrical Connector For High Tone Horn -H2
2. Nut 9 Nm
3. High Tone Horn -H2- Removing and installing, refer to «HORNS -H2- / -H7»(/audi/tt/8j-2006-2010/remont/gauges-instrument-panels/#instruments-roadster__horns-h2-h7) .
4. Low Tone Horn -H7- Removing and installing, refer to «HORNS -H2- / -H7»(/audi/tt/8j-2006-2010/remont/gauges-instrument-panels/#instruments-roadster__horns-h2-h7) .
5. Nut 9 Nm
6. Electrical connector For Low Tone Horn -H7-.
7. Bracket For signal horns.

FASTENER TIGHTENING SPECIFICATIONS

CIGARETTE LIGHTER -U1

Special tools and workshop equipment required

1. Release Tool T40148

Removing

Scheme 50

Remove front ashtray. Refer to Center Console in Removal and Installation .

Open ashtray and remove ashtray insert.

Disengage the wiring harness on the front ashtray.

The release tabs -2- on the release tool T40148 must engage in the openings in the cigarette light -3- -arrow- and the threaded pin -1- must slide down as far as the stop.

Slide the T40148 into the cigarette lighter -1- as far as the stop.

Scheme 51

Rotate the thumbwheel -2- on the T40148 clockwise as far as the stop.

Scheme 52

1. The piston -2- is pulled upward and the release tabs -1- on the T40148 spread -arrows-.

Pull the cigarette lighter out just enough until the contact -2- on thecigarette lighter illumination bulb -L28- touches the connector -3-.

Scheme 53

1. The cover over the cigarette lighter illumination bulb is now open.

Move the cover -1- to the side -arrow- just enough so that it is possible to remove the cigarette lighter from the illumination ring.

Release the clips in -direction of arrow-.

Scheme 54

Remove the cigarette lighter with the illumination ring -1- from the front ashtray -2-.

Installing

Install in reverse order of removal. Note the following

Remove the support -1- on the T40148.

Scheme 55

Slide the piston down and hold it in place.

Rotate the thumbwheel -4- on the T40148 counter-clockwise -arrow-. This loosens the release tabs -2- on the cigarette lighter -3- so the T40148 can be removed.

Install front ashtray. Refer to Center Console in Removal and Installation .

Removing

If the control module was replaced, select the "Replace" function for the respective control module in "Guided Fault Finding" or "Guided Functions" using the Vehicle diagnostic tester.

Select the function or path

Follow further instructions on display of Vehicle diagnostic tester.

Switch off ignition and remove ignition key.

Remove driver side instrument panel cover. Refer to Storage Compartments and Covers in Removal and Installation .

Remove bolt -arrows- and remove air duct -1-.

Scheme 56

Release retaining clips -1 and 6- by pressing them together -arrows-.

Scheme 57

Disengage retaining tab -2- on bracket -3-.

Disconnect electrical connector -4- and remove Data Bus On Board Diagnostic Interface -J533- -item 5-.

Installing

Install in reverse order of removal. Note the following

Install air duct. Refer to DESCRIPTION AND OPERATION or [For engine(s) BPY, CETA, CCTA, CDMA, CEPB] Removal and Installation .

Install driver side instrument panel cover. Refer to Storage Compartments and Covers in Removal and Installation .

HORNS -H2- / -H7

Observe notes on contact corrosion. Refer to CONTACT CORROSION .

Removing

Switch off ignition and remove ignition key.

Remove front bumper cover. Refer to Removal and Installation .

Disconnect electrical connectors -1 and 4-.

Scheme 58

Remove nuts -arrows-.

Remove signal horn -2 or 3- from bracket.

Installing

1. Tightening specification. Refer to «SIGNAL HORNS OVERVIEW»(/audi/tt/8j-2006-2010/remont/gauges-instrument-panels/#instruments-roadster__signal-horns-overview) .

Install in reverse order of removal. Note the following

Install front bumper cover. Refer to Removal and Installation .

INSTRUMENT CLUSTER

Note. Do not disassemble instrument cluster. All warning lamps in instrument cluster are fitted with light-emitting diodes. In case an indicator lamp is malfunctioning, the instrument cluster must be replaced. It is not necessary to remove the steering wheel in order to remove the instrument cluster.

Removing

If the instrument cluster with Instrument Cluster Control Module -J285- is replaced, select "Replace" function for respective control module in "Guided Functions" using the Vehicle diagnostic tester.

Adjust steering wheel downward and to rear as far as possible, use entire adjustment range of steering column adjustment for this.

Switch off ignition and remove ignition key.

Remove gap cover. Refer to Storage Compartments and Covers in Removal and Installation .

Place gap cover on upper steering column trim.

Remove screws -arrows-.

Scheme 59

Pull instrument cluster -1- out until it lies on steering wheel.

Disconnect the connector.

To disconnect electrical connector, press catch -1-, turn retaining bracket in -direction of arrow- and remove connector.

Scheme 60

Remove instrument cluster to driver's side between steering wheel and instrument cluster.

Installing

1. Tightening specification, refer to «INSTRUMENT CLUSTER AND CLOCK RECEIVER OVERVIEW»(/audi/tt/8j-2006-2010/remont/gauges-instrument-panels/#instruments-roadster__instrument-cluster-and-clock-receiver-overview) .

Install in reverse order of removal. Note the following

Continue following instructions on Vehicle diagnostic tester with a new instrument cluster.

OUTSIDE AIR TEMPERATURE SENSOR -G17

Removing

Scheme 61

Remove front bumper cover. Refer to Removal and Installation .

Disconnect electrical connector -1-.

Carefully press retaining clips together -arrow- and remove Outside air temperature sensor upward from bracket.

Installing

Install in reverse order of removal. Note the following

Install front bumper cover. Refer to Removal and Installation .

RADIO FREQUENCY CONTROLLED CLOCK RECEIVER -J489

Removing

Scheme 62

Remove rear bumper cover. Refer to Removal and Installation .

Remove bolts -arrows- and remove Radio Frequency Controlled Clock Receiver -item 2-.

Disconnect electrical connector -1- on Radio Frequency Controlled Clock Receiver.

Installing

1. Tightening specification. Refer to «INSTRUMENT CLUSTER AND CLOCK RECEIVER OVERVIEW»(/audi/tt/8j-2006-2010/remont/gauges-instrument-panels/#instruments-roadster__instrument-cluster-and-clock-receiver-overview) .

Install in reverse order of removal. Note the following

Install the cover on the rear bumper. Refer to Removal and Installation .

Scheme 63

1. Release Tool T40148

See also:
• General Information
• WIRING HARNESSES AND CONNECTORS, REPAIRING
• Removal and Installation
• Removal and Installation
• DESCRIPTION AND OPERATION
• Removal and Installation
• CIGARETTE LIGHTER -U1
• INSTRUMENT CLUSTER
• RADIO FREQUENCY CONTROLLED CLOCK RECEIVER -J489
• CONTACT CORROSION
• HORNS -H2- / -H7
• SIGNAL HORNS OVERVIEW
• INSTRUMENT CLUSTER AND CLOCK RECEIVER OVERVIEW