A4 Quattro Wagon V6-2.8L (AHA) (1998)
Radio/Stereo: Initial Inspection and Diagnostic Overview
On Board Diagnostic (OBD), General
Technical features of radio Systems
The new generation of the Audi radio system has extensive On Board Diagnostic (OBD) capability.
All radio units have a Diagnostic Trouble Code (DTC) memory. If a malfunction occurs in one of the components or wires which is monitored by the
system, a record of the type of malfunction is stored in DTC memory.
Radio on Board Diagnostic (OBD), Initiating Program
Test requirements
-
Fuse OK per wiring diagram
-
VAG1551 Scan Tool (ST) connected.
-
Ignition switched on
NOTE:
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If the display remains blank, check the voltage supply of the VAG1551 Scan Tool (ST) according to the wiring diagram.
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Additional operating instructions can be printed out by pressing the HELP button.
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The -> button is used to advance through the program sequence.
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If an incorrect entry is made, press the -C- button to escape.
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In "Rapid data transfer" operating mode 1 the "Automatic Test Sequence" function 00 can be carried out. This checks DTC memory of all vehicle
control modules (with OBD capability) automatically.
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Switch ignition on.
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Switch printer on by pressing PRINT button (indicator lamp in button lights Up).
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Press button -1- to select "Rapid data transfer" operating mode 1.
Indicated on display
Rapid data transfer
HELP
Insert address word XX
Address word for radio: 56
-
Press buttons -5- and -6- to insert "Radio" address word 56.
Indicated on display
Rapid data transfer
Q
56 - Radio
-
Press -Q- button to confirm input.
NOTE: While the On Board Diagnostic (OBD) program is running "DIAG" will appear on the radio unit display.
Indicated on display (after about 5 seconds):
4B00351B6A
Radio
D01
->
Coding 00017
WSC 06812
-
4B0035186A: Part No. for radio.
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Radio: component designation
-
D01: software version installed in radio
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Coding 00017: radio coding
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WSC 06812: dealership number
NOTE: Check coding against coding table. See: Programming and Relearning
-
Press -> button.
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If display shows one of the following messages, carry out troubleshooting procedure as described in troubleshooting program for diagnostic
wiring.
Rapid data transfer
HELP
Control module does not answer