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Audi A4 Sedan 2002 User Manual

Audi A4 Sedan 2002
82 pages
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91-1
Radio system
General information
CAUTION!
Before beginning repairs on the electrical
system:
Obtain anti-theft radio security code if
necessary.
Switch the ignition off.
Disconnect battery Ground (GND) strap.
On vehicles equipped with Audi Telematics
by OnStar , switch-off the emergency (back-
up) battery for the Telematic/Telephone
Control Module prior to disconnecting
vehicle battery. Use VAS 5051 Vehicle
Diagnostic, Testing and Information System
in mode "Guided Fault Finding" Page 91-
119 .
After reconnecting vehicle battery, re-code
anti-theft radio if necessary and check
operation. Also check operation of clock and
power windows according to Repair Manual
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
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Audi A4 Sedan 2002 Specifications

General IconGeneral
BrandAudi
ModelA4 Sedan 2002
CategoryCar Receiver
LanguageEnglish

Summary

Radio System General Information and Precautions

General Information and Safety Precautions

Essential safety precautions and general information before starting repairs on the radio system.

System Operation and Troubleshooting

Troubleshooting and Servicing Guidelines

Prerequisites for technicians, including system familiarity, wiring diagrams, and parts usage.

On Board Diagnostic (OBD) and Retrofitting

Explains OBD capabilities and guidelines for retrofitting radio systems, including wiring considerations.

Transport Mode Deactivation

Instructions for deactivating the "Symphony" radio system's Transport Mode for vehicle transport or storage.

Component Overviews and Layouts

Sedan Component Overviews

Illustrates locations of audio components like radios, speakers, CD changers, and amplifiers in Sedan models.

Avant Component Overviews

Depicts audio component placements in Avant models, including radios, speakers, CD changers, and amplifiers.

SDARS System Component Overviews

Shows locations of SDARS system components for Sedan and Avant models, covering tuners, radios, and speakers.

Communication System Layouts

Provides layout diagrams for SDARS and navigation systems, detailing antennas, radios, and control modules.

Connector Terminal Assignments

Radio Connector Assignments

Details terminal assignments for "Concert II", "Symphony II", and Satellite Radio connector types.

BOSE® Amplifier and System Connectors

Lists connector assignments for BOSE® amplifiers and various system multi-pin connectors.

Component Removal and Installation Procedures

Radio Units Removal and Installation

Guides on removing and installing "Concert II" and "Symphony II" radio units using specific tools.

CD Changer Unit -R41- Removal and Installation

Details the process for removing and installing the CD Changer Unit -R41-, including tool requirements.

Wiring Check and Troubleshooting

Explains how to check wiring between radio and CD changer, and troubleshooting steps for connection issues.

Speaker Removal and Installation

Covers removing and installing various speakers (Midrange, Bass) in doors and rear compartments.

Antenna Modules and Tuner Removal and Installation

Instructions for removing and installing antenna control modules, left antenna modules, and satellite tuner antennas.

Amplifier -R12- Removal and Installation

Step-by-step guide for removing and installing the amplifier for rear loudspeakers and BOSE® systems.

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