3.2l - Fuel Supply - Engine Code(s): Cbra (roadster) Audi TT 8J

FUEL SUPPLY SYSTEM, SERVICING

Note. All manufacturers special tools as well as common tools may contain a manufacturer specific part number. These tools may be substituted with an equivalent aftermarket tool or are available for purchase through Manufacturers special tools as well as common tools that contain a manufacturer specific part number may be referenced in the test procedure illustrations showing the tool use or installation. If the manufacturer specific tool is not being used, an equivalent aftermarket tool may be installed in the same manner as the manufacturers special tool. The manufacturers test box Test Box 105 Pin VAG 1598/31 is available for purchase or rental.

SAFETY PRECAUTIONS

Perform the following steps before beginning work on the Fuel system

1. Disconnect the battery Ground (GND) cable with the ignition switched off.
2. Open the fuel filler flap briefly and then close again.

When removing and installing components from full or partially full fuel tanks, observe the following

1. The fuel tank must only be partially full. How much fuel can remain in the fuel tank may be read in the respective work description. Empty the fuel tank if necessary.
2. Before starting work, switch on the exhaust extraction system and place an extraction hose close to the installation opening of the fuel tank to extract escaping fuel fumes. If no exhaust extraction system is available, a radial fan (as long as motor is not in air flow) with a displacement greater than 15 m 3 /h can be used.
3. Prevent fuel from contacting the skin! Wear fuel-resistant gloves!

CLEAN WORKING CONDITIONS

When working on the fuel supply/injection system, pay careful attention to the following rules of cleanliness

1. Thoroughly clean all connections and the surrounding area before disconnecting.
2. Place parts that have been removed on a clean surface and cover them. Do not use fluffy cloths!
3. Carefully cover over opened components or seal, if repairs are not performed immediately.
4. Only install clean components: Only unpack replacement parts immediately prior to installation. Do not use parts that have been stored unpacked (e.g. in tool boxes etc.).
5. When the system is open: Do not work with compressed air. Do not move vehicle unless absolutely necessary.

TRANSFER FUEL PUMP, CHECKING

Special tools and workshop equipment required

1. Hand held remote control (jumper).
2. Multimeter.
3. Electrical connector test lead set.

Test conditions

1. Battery voltage 12.5 V.
2. Fuse -SA4- OK.
3. Fuse -SB1- OK.
4. Fuse -SB7- OK.
5. Fuel Pump (FP) Relay -J17- OK.
6. Fuel Pump (FP) 2 Relay -J49- OK.
7. Fuel filter OK.
8. Ignition switched off.

Test sequence

TT Coupe

Remove rear seat bench. Refer to Rear Seat, Coupe

TT Roadster

Remove right rear side trim panel. Refer to Trim, Roadster

All vehicles

Remove the cover retainers -arrows- from the right sealing flange.

Scheme 433

Press both latches in direction of -arrow- and remove the engine compartment E-box cover.

Scheme 434

Remove Fuse -SB1- from "fuse carrier ST2" -2-.

Scheme 435

Connect a Hand held remote control (jumper) to the terminal on Fuse -SB1- and to battery "+".

Scheme 436

Press the switch on the Hand held remote control (jumper).

Note. The Fuel Pump (FP) runs quietly. Avoid surrounding noises while testing the fuel pump.

Listen for an operating noise from the Transfer Fuel Pump (FP) -G6-.

If no operating noise is heard

Remove the fuel delivery unit. Refer to FWD FRONT WHEEL DRIVE AWD ALL WHEEL DRIVE

Using a Multimeter, check the Transfer Fuel Pump (FP) -G6- electrical connector terminals 1 to 5 for continuity.

Scheme 437

Specified value: 0 ohms.

If the specification was not obtained

Check the Transfer Fuel Pump (FP) -G6- electrical harness connector terminal 1 to 5 for a short circuit to Battery positive (+) or an open circuit.

If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring and the resistance value was not OK

Replace the Transfer Fuel Pump (FP) -G6-. Refer to FWD: FRONT WHEEL DRIVE AWD ALL WHEEL DRIVE .

If no malfunction is detected in the wiring and the resistance value was OK

If an operating noise is heard

Checking voltage

Switch the ignition on.

Using a Multimeter, check the Transfer Fuel Pump (FP) -G6- electrical harness connector terminal 1 to Ground (GND) for voltage.

Switch the ignition off.

Specified value: Battery voltage.

If the specification was not obtained

Check the Transfer Fuel Pump (FP) -G6- electrical harness connector terminal 1 to the Fuel Pump (FP) 2 Relay -J49- socket 2/87 for an open circuit, or a short circuit to Battery positive (+) or Ground (GND).

Check the electrical harness connector for damage, corrosion, loose or broken terminals.

If necessary, repair the faulty wiring connection.

If the specification was obtained

Checking Ground (GND)

Using a Multimeter, check the Transfer Fuel Pump (FP) -G6- electrical harness connector terminal 5 to the Ground (GND) connection on right lower A-pillar for resistance.

Specified value: 1.5 ohms Max.

If the specification was not obtained

Check the Transfer Fuel Pump (FP) -G6- electrical harness connector terminal 5 to the Ground (GND) connection on right lower A-pillar for an open circuit, or a short circuit to Battery positive (+) or Ground (GND).

Check the electrical harness connector for damage, corrosion, loose or broken terminals.

If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring

Replace the Fuel Pump (FP) 2 Relay -J49-.

Assembly is performed in the reverse of the removal.

Final procedures

After the repair work, the following work steps must be performed in the following sequence

1. Check the DTC memory. Refer to «DIAGNOSTIC MODE 03 - READ DTC MEMORY»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster__diagnostic-mode-03-read-dtc) .
2. If necessary, erase the DTC memory. Refer to «DIAGNOSTIC MODE 04 - ERASE DTC MEMORY»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster__diagnostic-mode-04-erase-dtc) .
3. If the DTC memory was erased, generate readiness code. Refer to «READINESS CODE»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster) .

End of diagnosis

FUEL PUMP DELIVERY QUANTITY, CHECKING

Special tools and workshop equipment required

1. Hand held remote control (jumper).
2. Multimeter.
3. Electrical connector test lead set.
4. Measuring container, fuel-resistant.

Test conditions

1. Battery voltage 12.5 V
2. Fuel filter OK
3. Fuel tank at least 1 / 4 filled.
4. Fuel pressure regulator OK.
5. Ignition switched off.

Test sequence

Remove the fuel filler cap from fuel filler.

Remove rear seat bench. Refer to Rear Seat, Coupe

Remove cover retainers -arrows- from the right sealing flange.

Disconnect the electrical harness connector -arrow- from the fuel delivery unit.

Scheme 438

Connect a Hand held remote control (jumper) to terminal -1- of the fuel delivery unit and to vehicle battery (+).

Connect a jumper cable from an Electrical connector test lead set to terminal -5- of the fuel delivery unit and to vehicle Ground (GND).

Scheme 439

Disconnect the fuel return line -arrow- by pressing the release button.

Scheme 440

Connect the Fuel pressure test set (high pressure) onto the disconnected fuel return line.

Scheme 441

Press switch on remote control for 15 seconds.

Compare quantity of fuel delivered with minimum delivery rate in the diagram (cm 3 /15s).

Scheme 442

Note. Voltage at the fuel pump with engine stopped and fuel pump running is approx. 2 volts less than battery voltage.

If minimum delivery quantity is not obtained, the following malfunctions may be present

1. Fuel lines pinched.
2. Fuel filter clogged.
3. Fuel pump faulty.

Assembly is performed in reverse order of removal.

End of procedure

EVAP SYSTEM

For all EVAP system component locations and hose routing. Refer to EVAP Canister and Leak Detection System Overview .

For the EVAP system hose routing. Refer to EVAP Canister and Leak Detection System, Hose Diagram .

For all EVAP system removal/installation procedures and torque specifications. Refer to Evaporative Emission (EVAP) Canister .

Note. All manufacturers special tools as well as common tools may contain a manufacturer specific part number. These tools may be substituted with an equivalent aftermarket tool or are available for purchase through Audi. Manufacturers special tools as well as common tools that contain a manufacturer specific part number may be referenced in the test procedure illustrations showing the tool use or installation. If the manufacturer specific tool is not being used, an equivalent aftermarket tool may be installed in the same manner as the manufacturers special tool.

EVAP SYSTEM, DETECTING LEAKS

Function

The leak detection system recognizes leaks in the complete fuel system, including the fuel tank, EVAP canister and the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-.

On the mechanical side, the leak detection system consists mainly of a vacuum-driven diaphragm pump equipped with a reed contact on the actuation rod of the pump diaphragm. The pump is supplied with vacuum by the engine intake stroke.

1. When leak detection is activated, the diaphragm pump pumps the fuel system up to 20 ••• 30 mbar. The pump diaphragm is then moved out so that the reed contact at the operating rod remains in the "open" position.
2. During the leak diagnosis, the reed contact is monitored to check if it remains open within 10 seconds. This indicates the system is sealed.
3. If the pressure falls (indicating a leak), the diaphragm moves back and the reed contact closes.
4. If the reed contact closes within 10 seconds of leak detection time, a further test is performed: In this case the diaphragm pump pumps four times again. The Engine Control Module (ECM) -J623- measures the time for each of the four pumps until the reed contact is closed again. From that, the control module can recognize a "small leak" (greater than 1 mm in diameter) or a "large leak".

Leak diagnosis is activated automatically shortly following every engine start. If a malfunction is determined, an entry is made to the Diagnostic Trouble Code (DTC) memory. The Malfunction Indicator Lamp (MIL) -K83- in the instrument cluster lights up if the malfunction is recognized for two subsequent starts.

EVAPORATIVE EMISSION CANISTER SYSTEM, CHECKING FOR LEAKS

Special tools and workshop equipment required

1. Smoke tester.
2. EVAP and Fuel Supply System Vacuum hose and line routing diagram.

Note. Secure all hose connections using hose clamps appropriate for the model type Replace seals and gaskets when performing repair work.

Leak checking

Using a Smoke tester, check the Evaporative Emission (EVAP) canister system for leaks.

Note. Always follow the manufacturers directions for the proper installation and operation of the Smoke tester being used.

If a leak is detected

Check the fuel filler cap seal for damage and for proper installation. Replace if necessary.

Check the seals under the locking flanges and the union nuts are properly tightened on the fuel tank.

Check all hose connections of the fuel supply system and replace or repair any leaking lines.

Check all hose connections of the EVAP system and replace or repair any leaking lines.

Repair or replace any damaged component.

If no leaks are found in the EVAP and Fuel Supply System

Erase the DTC memory if a DTC was set. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .

Perform a road test to verify repair.

If a DTC was set and does not return

Repair complete, Generate readiness code. Refer to Readiness Code Description .

End diagnosis.

If the DTC does return and no leaks are found in the EVAP and Fuel Supply System

Check the DTC memory for any DTC codes pertaining to the EVAP and Fuel Supply Systems. If a DTC is stored, perform the diagnostic test procedure for the suspected component. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .

End diagnosis.

EVAP CANISTER PURGE REGULATOR VALVE, CHECKING

Special tools and workshop equipment required

1. Multimeter.
2. Wiring diagram.

Test requirements

1. Fuse -SB7- OK.
2. Engine Control Module (ECM) Power Supply Relay -J271- OK.
3. The ignition switched off.

Note. Voltage for the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- is supplied by the Engine Control Module (ECM) Power Supply Relay -J271-.

Test procedure

Perform a preliminary check to verify the customers complaint. Refer to Preliminary Check .

Start diagnosis

Disconnect the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- electrical harness connector.

Checking internal resistance

Using a Multimeter --, check the resistance between terminals 1 and 2 of the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-.

Specified value: 22, 0 to 30, 0 ohms.

If the specified value was not obtained

Replace the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-.

If the specification is obtained

Checking voltage supply

Using a Multimeter --, check the electrical harness connector terminal 1 to Ground (GND) for voltage.

Scheme 443

Operate the starter briefly.

Specified value: battery voltage.

If the specified value was not obtained

Check the wiring connection from the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- electrical harness connector terminal 1 to the Engine Control Module (ECM) Power Supply Relay -J271- terminal 2/87 for an open circuit or a short circuit to Battery positive (+).

Check the electrical harness connector for damage, corrosion, loose or broken terminals.

If necessary, repair the wiring connection.

If the specified value was obtained

Checking wiring

If the manufacturers test box is being used. Perform the following step.

Install the test box. Refer to 3 WIRING AND COMPONENTS, CHECKING WITH TEST BOX .

If the manufacturers test box is not being used. Perform the following step.

Remove the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE, REPLACING .

Using a Multimeter --, check the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- electrical connector terminal 2 to the Engine Control Module (ECM) -J623- electrical harness connector T40 terminal 120 for resistance.

Specified value: 1.5 ohms.

If the specification was not obtained

Check the wiring for a short circuit to Battery positive (+), Ground (GND) or an open circuit.

Check the electrical harness connector for damage, corrosion, loose or broken terminals.

If necessary, repair the wiring connection.

If the specification was obtained

Erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .

Perform a road test to verify repair.

If the DTC does not return

Repair complete, Generate readiness code. Refer to Readiness Code Description .

End diagnosis.

If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK

Replace the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE, REPLACING .

Assembly is performed in the reverse of the removal.

Final procedures

After repair work, the following work steps must be performed in the mentioned sequence

1. Check the DTC memory. Refer to «DIAGNOSTIC MODE 03 - READ DTC MEMORY»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster__diagnostic-mode-03-read-dtc) .
2. If necessary, erase the DTC memory. Refer to «DIAGNOSTIC MODE 04 - ERASE DTC MEMORY»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster__diagnostic-mode-04-erase-dtc) .
3. If the DTC memory was erased, generate readiness code. Refer to «READINESS CODE»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster) .

End of diagnosis

LEAK DETECTION PUMP, CHECKING

Special tools and workshop equipment required

1. Multimeter.
2. Wiring diagram.

Test requirements

1. Fuse -SB6- OK.
2. The Motronic Engine Control Module (ECM) Power Supply Relay -J271- OK.
3. The ignition switched off.

Test procedure

Perform a preliminary check to verify the customers complaint. Refer to Preliminary Check .

Remove the left rear wheel housing liner. Refer to Wheel Housing Liners

Start diagnosis

Disconnect the Leak Detection Pump (LDP) -V144- electrical harness connector -3-.

Scheme 444

Checking internal resistance

Using a Multimeter --, check the Leak Detection Pump (LDP) -V144- for resistance as follows

Scheme 445

If any of the specifications are not obtained

Replace the Leak Detection Pump (LDP) --V144--. Refer to Leak Detection Pump (LDP) -V144 .

If the specified values are obtained

Checking voltage supply

Note. The voltage for the Leak Detection Pump (LDP) --V144-- is supplied by the Motronic Engine Control Module (ECM) Power Supply Relay -J271- OK.

Using a Multimeter --, check the Leak Detection Pump (LDP) --V144-- electrical harness connector terminal 3 for voltage.

Scheme 446

Operate the starter briefly.

Specified value: battery voltage.

Switch the ignition off.

If the specified value was not obtained

Using a Multimeter --, check the Leak Detection Pump (LDP) --V144-- electrical harness connector terminal 3 to the Motronic Engine Control Module (ECM) Power Supply Relay -J271- socket 2/87 for resistance.

Specified value: 1.5 ohms max

If the specification was not obtained

Check the wiring for a short circuit to Battery positive (+) or an open circuit.

Check the electrical harness connector for damage, corrosion, loose or broken terminals.

If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring and if the voltage supply was OK

Checking wiring

If the manufacturers test box is being used. Perform the following step.

Install the test box. Refer to WIRING AND COMPONENTS, CHECKING WITH TEST BOX .

If the manufacturers test box is not being used. Perform the following step.

Remove the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE, REPLACING .

Using a Multimeter --, check the Leak Detection Pump (LDP) --V144-- electrical harness connector terminal 1 to Engine Control Module (ECM) -J623- electrical harness connector T81 terminal 80 for resistance.

Using a Multimeter --, check the Leak Detection Pump (LDP) --V144-- electrical harness connector terminal 2 to Engine Control Module (ECM) -J623- electrical harness connector T81 terminal 25 for resistance.

Specified value: 1.5 ohms max.

If the specification is not obtained

Check the wiring for a short circuit to Battery positive (+), Ground (GND) or an open circuit.

Check the electrical harness connector for damage, corrosion, loose or broken terminals.

If necessary, repair the faulty wiring connection.

If no malfunction is found in wiring

Erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .

Perform a road test to verify repair.

If the DTC does not return

Repair complete, Generate readiness code. Refer to Readiness Code Description .

End diagnosis.

If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK

Replace the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE, REPLACING .

Assembly is performed in the reverse of the removal.

Final procedures

After the repair work, the following work steps must be performed in the following sequence

1. Check the DTC memory. Refer to «DIAGNOSTIC MODE 03 - READ DTC MEMORY»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster__diagnostic-mode-03-read-dtc) .
2. If necessary, erase the DTC memory. Refer to «DIAGNOSTIC MODE 04 - ERASE DTC MEMORY»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster__diagnostic-mode-04-erase-dtc) .
3. If the DTC memory was erased, generate readiness code. Refer to «READINESS CODE»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster) .

End of diagnosis

ELECTRONIC POWER CONTROL SYSTEM FUNCTION

For "EPC", the throttle valve is not operated by a cable from the accelerator pedal. There is no mechanical connection between the accelerator pedal and the throttle valve.

The position of the accelerator pedal is communicated to Engine Control Module (ECM) -J623- by Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185 - (variable resistances; stored in one housing) that are connected with the accelerator pedal.

The accelerator pedal position (driver's intention) is a main input unit for the Engine Control Module (ECM) -J623-.

Operation of the throttle valve occurs by an electric motor (Throttle Drive (for Electronic Power Control (EPC)) -G186-) in the Throttle Valve Control Module - J338-. This is true across the entire engine speed and engine load spectrum.

Throttle valve is operated by Throttle Drive (for Electronic Power Control (EPC)) -G186- according to specifications of Engine Control Module (ECM) -J623-.

With engine off and ignition switched on, Engine Control Module (ECM) -J623- controls the Throttle Drive (for Electronic Power Control (EPC)) - G186- exactly according to specifications of Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185 -. This means, if the accelerator pedal is depressed half way, the Throttle Drive (for Electronic Power Control (EPC)) -G186- opens the throttle valve to the same degree; i.e. throttle valve is then opened approx. half way.

With engine running (under load), Engine Control Module (ECM) -J623- can open or close the throttle valve independently of Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-.

This means, for example, that the throttle valve could be fully opened even though the accelerator pedal has only been depressed half way. This has the advantage of preventing torque losses at the throttle valve.

In addition to this, it results in significantly better values relative to emissions and consumption under certain load conditions.

It would be incorrect to think that "EPC" consists of only one or two components. "EPC" is much more of a system containing all components that contribute to recognizing, controlling and monitoring the position of the throttle valve.

Observe safety precautions.

Observe rules for cleanliness.

THROTTLE POSITION SENSOR AND ACCELERATOR PEDAL POSITION SENSOR 2, CHECKING

Special tools and workshop equipment required

1. Multimeter.
2. Wiring diagram

Test requirement

1. The Engine Control Module (ECM) - J623- fuses OK.
2. Battery voltage at least 12.5 volts.
3. All electrical consumers such as, lights and rear window defroster, switched off.
4. Vehicles with automatic transmission, shift selector lever into position "P" or "N".
5. A/C switched off.
6. Ground (GND) connections between engine/transmission/chassis OK.

Note. Use only gold-plated terminals when servicing the electrical harness connector terminals in Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-.

Test procedure

Perform a preliminary check to verify the customers complaint. Refer to Preliminary Check .

Release the tabs -arrows- and remove the steering column cover.

Scheme 447

Start diagnosis

Disconnect the Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185- electrical harness connector -2-.

Scheme 448

Checking voltage supply and wiring

Switch the ignition on.

Using a Multimeter --, check the following wiring connections for voltage.

Scheme 449

Switch the ignition off.

If the specification is not obtained

If the manufacturers test box is being used. Perform the following step.

Install the test box. Refer to WIRING AND COMPONENTS, CHECKING WITH TEST BOX .

If the manufacturers test box is not being used. Perform the following step.

Remove the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE, REPLACING .

Using a Multimeter --, check the Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185- electrical harness connector terminals to the Engine Control Module (ECM) -J623- electrical connector T121 for resistance.

Specified value: 1.5 ohms max.

If the specification is not obtained

Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).

Check the electrical harness connector for damage, corrosion, loose or broken terminals.

If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring and the voltage supply was OK

Replace the Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-.

If no malfunction is detected in the wiring and if the voltage supply was not OK

Erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY

Perform a road test to verify repair.

If the DTC does not return

Repair complete, Generate readiness code. Refer to Readiness Code Description .

End diagnosis.

If the DTC does return and no malfunction is detected in the wiring and the voltage supply was OK

Replace the Engine Control Module (ECM) -J623-. Refer to ENGINE CONTROL MODULE, REPLACING .

Assembly is performed in the reverse of the removal.

Final procedures

After repair work, the following work steps must be performed in the following sequence

1. Check the DTC memory. Refer to «DIAGNOSTIC MODE 03 - READ DTC MEMORY»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster__diagnostic-mode-03-read-dtc) .
2. If necessary, erase the DTC memory. Refer to «DIAGNOSTIC MODE 04 - ERASE DTC MEMORY»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster__diagnostic-mode-04-erase-dtc) .
3. If the DTC memory was erased, generate readiness code. Refer to «READINESS CODE»(/audi/tt/8j-2006-2010/remont/cooling-fan/#32l-generic-scan-tool-engine-codes-cbra-roadster) .

End of diagnosis

See also:
• Rear Seat, Coupe
• Trim, Roadster
• FRONT WHEEL DRIVE
• DIAGNOSTIC MODE 03 - READ DTC MEMORY
• DIAGNOSTIC MODE 04 - ERASE DTC MEMORY
• READINESS CODE
• Evaporative Emission (EVAP) Canister
• Readiness Code Description
• Preliminary Check
• WIRING AND COMPONENTS, CHECKING WITH TEST BOX
• ENGINE CONTROL MODULE, REPLACING
• Wheel Housing Liners
• Leak Detection Pump (LDP) -V144