Starters Audi TT 8N

TROUBLE SHOOTING

Note. See TROUBLE SHOOTING article in GENERAL INFORMATION.

PRELIMINARY INSPECTION

Verify customer complaint by operating system. Visually inspect for obvious signs of mechanical and electrical damage. Inspect for blown fuses and damaged relays. Inspect for loose or corroded connections, damaged wiring harnesses and/or switches. Check for a broken or partially broken wire inside insulation, which could cause system malfunction but prove good in a continuity/voltage check with system disconnected. Ensure any aftermarket electronic equipment is properly installed. If fault is found, repair as necessary.

REMOVAL & INSTALLATION

Air Bag

ECM

If connector is disconnected from ECM or battery is disconnected, all adaptation values in control module are erased. To achieve optimal anti-theft protection for vehicle, an anti-theft immobilizer was installed. Anti-theft immobilizer is a system for enabling/locking Engine Control Module (ECM) through the W-wire.

This system cannot be circumvented, it is necessary to perform adaptation of anti-theft immobilizer using VAS 5052 in On Board Diagnostic function. The great availability of equipment options makes adaptation of ECM necessary (e.g. cruise control system). This "writing" function is not possible with a generic scan tool, therefore it is necessary to use VAS 5052 in On Board Diagnostic function for this purpose. DTC memory content will remain intact however. If engine is started after this, a rough, uneven idle can result. In this case, ECM readiness code must be regenerated.

ECM Readiness Code

While limited diagnostic information is available, vehicle manufacturer does not support diagnostic information using aftermarket scan tools. To properly diagnose vehicle, it is recommended to use VAS 5051 scan tool with VAS 5051/1 adapter cable or VAG 1551 scan tool with 1551/3A adapter cable and VAG 1598/31 test box.

Readiness code must be generated when Engine Control Module (ECM) memory is cleared, battery voltage is disconnected or ECM is disconnected. To generate readiness code, vehicle must be stationary, transmission in Park or Neutral, all electrical consumers off, A/C switched off and coolant temperature at least 176°F (80°C). If possible, it is best to warm-up vehicle by test driving. Connect scan tool to DLC. DLC is located behind cover under left side of steering column.

Power Windows

After connecting battery, completely open and close all power windows.

Radio & Clock

Vehicles are equipped with an anti-theft stereo system that requires a code to activate. Record stereo code BEFORE disconnecting negative battery cable. Disconnect negative battery cable. Turn ignition to ON position. Reconnect negative battery cable. Enter code into stereo and reset clock.

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Scheme 6

1. Obtain radio anti-theft code. Loosen air filter housing mounting bolts. This will aid in removing battery. Remove plastic cover, located above battery. If equipped, remove protective battery case, by separating Velcro(R) tabs. Press locking tabs of main fuse box, and open cover.
2. Disconnect negative battery cable (1). See «BATTERY DISCONNECT PRECAUTIONS»(/audi/tt/8n-1998-2003/remont/starter/#starters). Remove positive terminal nut (2), and disconnect main fuse box. (Scheme 1) Loosen battery positive terminal nut (3), and disconnect positive cable. Remove bolt for battery hold-down. Remove battery, by gently pulling battery from mounting, and lift out of vehicle. Remove battery mounting platform.
3. On Coupe models, Remove 4 bolts securing air cleaner housing. (Scheme 2) On Roadster models, remove bolts (3) and nut (2). (Scheme 3) Remove bolts securing support to long-member. (Scheme 4)
4. On all models, open starter wiring harness retainer, and remove harness from retainer. Disconnect electrical connections for starter. Gently slide wiring harness retainer from metal bracket. (Scheme 5) Remove nut securing metal bracket to starter mounting stud.
5. Remove bolts securing starter to transmission. (Scheme 6) Remove starter. To install, reverse removal procedure. Tighten all bolts/nuts to specification. See «TORQUE SPECIFICATIONS»(/audi/tt/8n-1998-2003/remont/starter/#starters__torque-specifications).

OVERHAUL

Note. Information not available from manufacturer.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

WIRING DIAGRAMS

See appropriate STARING/CHARGING wiring diagram in SYSTEM WIRING DIAGRAMS article.

See also:
• BATTERY DISCONNECT PRECAUTIONS
• TORQUE SPECIFICATIONS