Test requirement

Fuse OK per wiring diagram
See SYSTEM WIRING DIAGRAMS .
VAG1551 Scan Tool (ST) connected. See VAS 5051 TESTER OR VAG 1551/1552 SCAN TOOL (ST), CONNECTING .
Switch ignition on.

NOTE:

If the display remains blank, check the voltage supply of the VAG1551 Scan Tool (ST) according to the wiring diagram.
Additional operating instructions can printed out by pressing the HELP button.
The --> button is used to advance through the program sequence.
If an incorrect entry is made, press the -C- button to escape.
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.

Switch ignition on.
Switch printer on by pressing PRINT button (indicator lamp in button lights up).
Press button -1- to select "Rapid data transfer" operating mode 1.

Indicated on display

Fig 1: Identifying Scan Tool Display - Radio, On Board Diagnostic (1 Of 9)

Courtesy of AUDI OF AMERICA, INC.

Address word for radio: 56

Press buttons -5- and -6- to enter "Radio" address word 56.
Indicated on display

Fig 2: Identifying Scan Tool Display - Radio, On Board Diagnostic (2 Of 9)
Courtesy of AUDI OF AMERICA, INC.
Press -Q- button to confirm input.

NOTE: While the On Board Diagnostic (OBD) program is running "DIAG" will appear on the radio unit display.