2003 AUDI TT

Audi TT 2003 - BUZZERS, RELAYS & TIMERS

Audi TT 2003 BUZZERS, RELAYS & TIMERS LOCATION

Component	Component Location
Brakelight Disable Relay	On 13-fold relay panel. See Fig. 3 .
Coolant Circulation Pump Relay	On 13-fold relay panel. See Fig. 3 .
Dual Horn Relay	On micro central electric panel. See Fig. 4 .
Foglight Relay	On 13-fold relay panel. See Fig. 3 .
Fuel Pump (FP) Relay	On micro central electric panel. See Fig. 4 .
Load Reduction Relay	On micro central electric panel. See Fig. 4 .
Motronic Engine Control Module Power Supply Relay	In engine compartment W-box.
Rear Window Defogger Relay	On 13-fold relay panel. See Fig. 3 .
Secondary Air Injection Pump Relay	In engine compartment W-box. See Fig. 1 .
Starting Interlock Relay (A/T)	On 13-fold relay panel. See Fig. 3 .
Starting Interlock Relay (M/T)	On 13-fold relay panel. See Fig. 3 .
Wiper/Washer Intermittent Relay (2)	On micro central electric panel. See Fig. 4 .

Audi TT 2003 - CIRCUIT PROTECTION DEVICES

Audi TT 2003 CIRCUIT PROTECTION DEVICES LOCATION

Component	Component Location
Convertible Top Fuse	On micro central electric panel.
Engine Compartment W-Box	At left rear of engine compartment.
Fuse Panel	Behind cover on left end of dash.
Main Fuse Box	Attached to top of battery.
Micro Central Electric Panel	Beneath left side of dash.
Power Window Circuit Breaker	On micro central electric panel.
13-Fold Relay Panel	Beneath left side of dash, above micro central electric panel.

Audi TT 2003 - CONTROL UNITS

Audi TT 2003 CONTROL UNITS LOCATION

Component	Component Location
ABS Control Module	At left rear corner of engine compartment.
Air Bag Control Module	Beneath center of dash, near accelerator pedal.
All-Wheel Drive Control Module	On haldex coupling, on rear differential.
Central Locking Control Module	Forward of left rear fenderwell, behind panel. See Fig. 2 .
Coolant Fan Control Control Module	At left front corner of engine compartment.
Fresh Air Blower Control Module	Behind right end of dash, on HVAC housing.
Headlight Beam Adjusting Control Module (Coupe)	Beneath left side of rear seat.
Headlight Beam Adjusting Control Module (Roadster)	Behind rear trim panel, in luggage compartment.
Heated Door Lock Control Module (Left)	In left door.
High Intensity Gas Discharge Lamp Control Module (Left/Right)	Below respective headlight, on frame rail.
Lamp Control Module (2)	On 13-fold relay panel. See Fig. 3 .
Mirror Fold-Away Function Control Module	On 13-fold relay panel. See Fig. 3 .
Motronic Engine Control Module	In center of plenum, between firewall & windshield base. See Fig. 1 .
Navigation Unit (W/CD Drive)	Behind right seat, behind storage cover.
Operating Electronics & Telephone Control Module (Coupe)	Below left rear seat.
Operating Electronics & Telephone Control Module (Roadster)	Behind subwoofer, on rear compartment wall.
Power Window Control Module (Left/Right)	In respective door, integral with power window motor unit.
Radar Interior Monitoring Control Module 1 (Roadster)	Behind passenger seat wind deflector.
Throttle Valve Control Module (1.8L AMU)	On throttle body, on left rear of engine.
Throttle Valve Control Module (1.8L ATC/AWP)	On throttle body, on left front of engine. See Fig. 1 .

Audi TT 2003 - MOTORS

Audi TT 2003 MOTORS LOCATION

Component	Component Location
ABS Hydraulic Pump	In left rear corner of engine compartment.
After-Run Coolant Pump	On right front of engine compartment.
Airflow Flap Motor	Behind right end of dash, on HVAC housing.
Central Air Flap Motor	Beneath center of dash, on bottom of HVAC housing.
Footwell/Defroster Flap Motor	Behind left side of dash, on left side of HVAC housing.
Fresh Air Blower	Behind right end of dash, on HVAC housing.
Fuel Pump	In fuel tank, beneath rear seat.
Fuel Tank Lid Unlock Motor	At right side of luggage compartment, behind carpet.
Headlight Washer Pump	On washer fluid reservoir, in left front wheelwell. See Fig. 2 .
Leak Detection Pump	Inside right front wheelwell. See Fig. 2 .
Remote Unlock Rear Lid Motor	At right rear of luggage compartment.
Secondary Air Injection Pump Motor	On lower left side of engine, below intake manifold.
Windshield Washer Pump	On washer fluid reservoir, in left front wheelwell. See Fig. 2 .

Audi TT 2003 - SENDING UNITS & SENSORS

Audi TT 2003 SENDING UNITS & SENSORS LOCATION

Component	Component Location
ABS Wheel Speed Sensors (4)	On respective hub/spindle assembly.
Accelerator Pedal Position Sensor 2	Integral with throttle position sensor.
A/C High Pressure Sensor	At right rear corner of engine compartment.
Anti-Theft Warning Ultra-Sound Sensor	At front center of roof, inside courtesy light housing.
Back Pressure Flap Motor Position Sensor	Behind right end of dash, on HVAC housing.
Camshaft Position Sensor 2	On front of cylinder head, behind timing belt cover.
Central Flap Motor Position Sensor	Beneath right side of dash, on left side of HVAC housing.
Engine Coolant Temperature Sensor	On rear of cylinder head, on coolant outlet. See Fig. 1 .
Engine Speed (RPM) Sensor	On left side of cylinder block, next to oil filter.
Footwell/Defrost Flap Motor Position Sensor	Behind right side of dash, on left side of HVAC housing.
Fresh Air Intake Duct Temperature Sensor	In HVAC intake duct, at right side of engine compartment. See Fig. 1 .
Fuel Level Sensor	In fuel tank, below rear seat.
Heated Oxygen Sensor	On exhaust system, upstream of three way catalytic converter.
Heated Oxygen Sensor 2	On exhaust system, downstream of three way catalytic converter.
Hydraulic Temperature Sensor	Integral with AWD control module.
Intake Air Temperature Sensor (1.8L AMU)	On intake manifold, near throttle body.
Intake Air Temperature Sensor (1.8L ATC/AWP)	On intake manifold, near throttle body. See Fig. 1 .
Knock Sensor 1	On left front of cylinder block.
Knock Sensor 2	On left rear of cylinder block.
Level Control System Sensor (AWD) (Left Rear)	In left rear wheelwell, attached to lower control arm.
Level Control System Sensor (FWD) (Left Rear)	On left side of rear axle beam.
Level Control System Sensor (Left Front)	In left front wheelwell, attached to lower control arm.
Longitudinal Acceleration Sensor	Behind right side of dash, next to glove box.
Manifold Absolute Pressure Sensor	Below right headlight, on intercooler outlet flange.
Mass Airflow Sensor	On air cleaner housing. See Fig. 1 .
Oil Level Thermal Sensor	On bottom of oil pan.
Outlet Temperature Floor Outlet Sensor	Behind left center of dash, on HVAC housing.
Outside Air Temperature Sensor	Behind center of lower front grille. See Fig. 2 .
Side Air Bag Crash Sensor (Driver)	Beneath left front seat, under carpet.
Side Air Bag Crash Sensor (Passenger)	Beneath right front seat, under carpet.
Speedometer Vehicle Speed Sensor	On right side of transmission, above differential housing.
Steering Angle Sensor	Behind steering wheel, in column.
Sunlight Photo Sensor	On upper center of dash, under left defroster grille. See Fig. 2 .
Temperature Regulator Flap Motor Position Sensor	Beneath right side of dash, on lower left side of HVAC housing.
Throttle Position Sensor	Above accelerator pedal.

Audi TT 2003 - SOLENOIDS & SOLENOID VALVES

Audi TT 2003 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Component Location
Evaporative Emission Canister Purge Regulator Valve	Next to coolant reservoir, on right side of engine compartment. See Fig. 1 .
Recirculating Valve (Turbocharger) (1.8L AMU)	On top rear of engine.
Recirculating Valve (Turbocharger) (1.8L ATC/ATP)	On left side of engine, below intake manifold.
Secondary Air Injection Solenoid Valve	At left side of engine, below intake manifold.
Wastegate By-Pass Regulator Valve	At left rear corner of engine compartment, on intake duct. See Fig. 1 .

Audi TT 2003 - SWITCHES

Audi TT 2003 SWITCHES LOCATION

Component	Component Location
A/C Pressure Switch	At right rear corner of engine compartment. See Fig. 1 .
Back-Up Light Switch (M/T)	On top of transmission, near starter motor.
Brakelight Switch	Above brake pedal, on bracket.
Clutch Pedal Position Switch	Above clutch pedal, on bracket.
Clutch Vacuum Vent Valve Switch	Above clutch pedal, on bracket.
Coolant Fan Control Thermal Switch	On bottom left corner of radiator.
Engine Coolant Level Warning Switch	Integral with coolant reservoir.
Engine Coolant Temperature Warning Switch	On rear of cylinder head, on coolant flange. See Fig. 1 .
Hood Alarm Switch	On hood latch mechanism.
Oil Pressure Switch	On left side of engine, on oil cooler flange.
Parking Brake Warning Light Switch	At base of parking brake lever.
Power Steering Pressure Switch	On power steering pump, on left front of engine.
Seat Belt Switch (Left)	In left seat belt buckle receiver.
Vacuum Vent Valve Brake Switch	Integral with brakelight switch.

Audi TT 2003 - MISCELLANEOUS

Audi TT 2003 MISCELLANEOUS LOCATION

Component	Component Location
Alarm Horn	In center of plenum, between base of windshield & firewall. See Fig. 1 .
Amplifier	Forward of right rear wheelwell, behind interior panel.
Antenna Amplifier (Roadster)	Below antenna, on left rear fender.
Fresh Air Blower Series Resistance W/Fuse	Behind right side of dash, on HVAC housing.
GPS Antenna	Below right defroster grille, on top of dash.
Ignition Coils (4)	On top of cylinder head, beneath decorative cover.
Seat Belt Tensioner Igniter (Left/Right)	Integral with respective seat belt reel.
Side Air Bag Igniter (Left/Right)	On outer side of respective seat back, beneath upholstery.
Telephone Microphone (Coupe)	At front center of roof, inside courtesy light housing.
Telephone Microphone (Roadster)	Inside instrument cluster assembly.
Telephone/Navigation Speaker	Below left defroster grille, on top of dash.
Telephone Transceiver	At left rear corner of luggage compartment, near taillight. See Fig. 2 .
TV Antenna Amplifier (Coupe)	At left side of rear window, behind trim.

Audi TT 2003 - CONNECTORS

Audi TT 2003 CONNECTORS LOCATION

Component	Component Location
T6M (Brown, 6 Pin)	In E-box, at left rear of engine compartment.
T10A (White, 10 Pin)	In E-box, at left rear of engine compartment.
T10B (Gray, 10 Pin)	In E-box, at left rear of engine compartment.
T10D (Brown, 10 Pin)	Behind left kick panel.
T10E (Black, 10 Pin)	In E-box, at left rear of engine compartment.
T10F (Brown, 10 Pin)	Behind right kick panel.
T10G (Blue, 10 Pin)	In E-box, at left rear of engine compartment.
T10I (Black, 10 Pin)	At left side of engine compartment, near strut tower.
T10L (Red, 10 Pin)	Behind left kick panel.
T10M (Red, 10 Pin)	Behind right kick panel.
T10Q (Green, 10 Pin)	Behind left kick panel.
T10R (Green, 10 Pin)	Behind right kick panel.
T10W (Blue, 10 Pin)	Behind left kick panel.
T10X (Orange, 10 Pin)	In E-box, at left rear of engine compartment.
T10Z (Blue, 10 Pin)	Behind right kick panel.

Audi TT 2003 - GROUNDS

Audi TT 2003 GROUNDS LOCATION

Component	Component Location
G2	On rear of engine.
G12	At left front of engine compartment, under battery tray. See Fig. 1 .
G15	At top front of engine. See Fig. 1 .
G42	Behind dash, left of steering column.
G43	At lower right "A" pillar.
G44	At lower left "A" pillar.
G45	Behind left center of dash.
G50	On left side of rear lid. See Fig. 2 .
G52	On right side of rear lid. See Fig. 2 .