Technician Safety Information

Safety Precautions

If special testing equipment is required during road test, note the following:

WARNING:
- To reduce the risk of accident during road tests, always proceed as follows:
- Use only the VAS 5051 tester or the VAG 1551 Scan Tool (ST) to read measuring value blocks. Always secure scan tool to the rear seat and have operated from there by a second technician.

To reduce the risk of personal injury and/or damage of electric and electronic components, always observe the following:
- Always switch ignition off before connecting or disconnecting test/measurement tools.
- It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary.
- Always switch ignition off before disconnecting or connecting battery. Failure to do so may damage a control module.

Test requirements:
- Check fuse for function according to wiring diagram.
- Connect VAS 5051 tester or VAG 1551 scan tool.
- 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.

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

Indicated on display:

Rapid data transfer HELP
Enter address word XX

Address word for navigation: 37

- Press buttons -3- and -7-.

Indicated on display:

Rapid data transfer Q
37 - navigation

- Press -Q- button to confirm input.
-Indicated on display after approx. 5 seconds:
- 4B0919887A: Part number of control module for navigation (see also parts program)
- BNS 4.0: component marking
- 0001: Software version of control module for navigation with CD drive
- Coding 00000: Coding not used
- WSC XXXXX: Workshop code (dealership number)

Displayed in display of instrument cluster:

DIAG

- Press -> button.

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

Indicated on display:

Rapid data transfer HELP
Control module not responding!

Rapid data transfer HELP
Malfunction in communication set-up

Rapid data transfer HELP
K-wire not switching to Ground (GND)

Rapid data transfer HELP
K-wire is not switching to B+

Rapid data transfer HELP
Select function XX

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

On Board Diagnostic (OBD) functions
The following functions are possible:

01 - Check Control Module Version.
02 - Check DTC Memory.
03 - Output Diagnostic Test Mode (DTM).
05 - Erase DTC Memory.
06 - End Output.
08 - Read Measuring Value Block.
10 - Adaptation.