Description of On-Board Diagnostics

CAN-bus On Board Diagnostic (OBD) interface -J533- ("Gateway")
The instrument cluster is connected to the powertrain CAN-bus and convenience system CAN-bus.

The databus is also referred to as the CAN databus.

Data can be transmitted between the CAN-bus and the diagnostic wire (K wire) via the databus On Board Diagnostic (OBD) interface -J533-.

The CAN-bus On Board Diagnostic (OBD) interface -J533- must be coded according to vehicle equipment when instrument cluster is replaced.

The CAN-bus On Board Diagnostic (OBD) interface -J533- in the instrument cluster has its own diagnostic address.

NOTE:
The following description refers only to the VAG 1551 Scan Tool (ST).

Connecting VAG 1551 Scan Tool (ST) and selecting functions (checking module version)

NOTE: Connect Scan Tool (ST). Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks/Scan Tool(ST), Connecting" under "Accessories and Optional Equipment/Alarm Module, (Vehicle Antitheft)"

- Switch on ignition.

Indicated on display:


VAG - On Board Diagnostic (OBD) HELP
1- Rapid data transfer*
2- Blink code output*


- * Two operating modes are displayed alternately

- Connect VAG 1551 Scan Tool (ST), select operating mode 1 "Rapid data transfer",switch on ignition and enter address word 19 for "gateway".

Indicated on display:


Rapid data transfer HELP
Enter address word XX


- Press buttons -1 - and 9-. "19" is the address word for "gateway".

Indicated on display:


Rapid data transfer Q
19 Gateway


- Press -Q- button to confirm input.

Indicated on display:


Rapid data transfer Q
Scan tool sends address word 19


Indicated on display:


6N0909901 Gateway K <-> CAN 0001
Coding XXXXX WSC 00000


- Upper line
Ident no. of control module, System identification (Gateway K <-> CAN)2), Version number

- Bottom line Coding number1), Work Shop Code
1) depends on control modules connected to CAN-bus
2) The CAN-bus On Board Diagnostic (OBD) interface -J533- in the instrument cluster is designated as 'Gateway' in On Board Diagnostic (0BD).

- Press -> button.

Indicated on display:


Rapid data transfer HELP
Select function XX


- Pressing the -HELP- button will print out an overview of all of the possible functions.

Overview of selectable functions
02 - Check DTC Memory
05 - Erase DTC Memory
06 - End Output
07 - Code Control Module
08 - Read Measuring Value Block


NOTE:
- Do not select the additional functions that are printed out via the HELP button.
- After function is completed, the VAG 1551 returns to the start position:


Indicated on display:


Rapid data transfer HELP
Select function XX