Test requirements:

Check fuse for function according to wiring diagram.
Connect VAS5051 tester or VAG1551 scan tool. See VAS 5051 TESTER OR VAG 1551/1552 SCAN TOOL (ST), CONNECTING .
Switch on ignition.

NOTE:

If nothing is indicated on display, check voltage supply for VAG 1551 scan tool according to wiring diagram.
Additional instructions can be called up via the HELP button on the scan tool.
The --> button is used for advancing through the program sequence.
An incorrect entry can be canceled using the C-button.
Function 00 "Automatic test sequence" can be performed in operating mode 1 "Rapid data transfer". This automatically checks all control modules installed in the vehicle.

Indicated on display

Fig 1: VAG1551 Scan Tool Display - Initiating Navigation System III On Board Diagnostic, Through M.Y. 2001 (1 Of 7)

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Address word for Navigation: 37

Indicated on display:

Fig 2: VAG1551 Scan Tool Display - Initiating Navigation System III On Board Diagnostic, Through M.Y. 2001 (2 Of 7)

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Indicated on display after approx. 5 seconds:

Fig 3: VAG1551 Scan Tool Display - Initiating Navigation System III On Board Diagnostic, Through M.Y. 2001 (3 Of 7)

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4B0919887A: Part number of control module for navigation (see also parts program)
Navigation: component marking
0001: Software version of control module for navigation with CD drive
Coding 00000: Coding not used
WSC XXXXX: Dealership number

Displayed in display of instrument cluster:

Fig 4: Display Of Instrument Cluster

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If one of these messages is displayed, perform trouble shooting according to troubleshooting diagnostic.

Fig 5: VAG1551 Scan Tool Display - Initiating Navigation System III On Board Diagnostic, Through M.Y. 2001 (4 Of 7)

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Fig 6: VAG1551 Scan Tool Display - Initiating Navigation System III On Board Diagnostic, Through M.Y. 2001 (5 Of 7)

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Fig 7: VAG1551 Scan Tool Display - Initiating Navigation System III On Board Diagnostic, Through M.Y. 2001 (6 Of 7)

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Indicated on display

Fig 8: VAG1551 Scan Tool Display - Initiating Navigation System III On Board Diagnostic, Through M.Y. 2001 (7 Of 7)

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Pressing the HELP button will print out an overview of all of the possible functions.
Press the --> button to continue program sequence.