Information Bus: Description and Operation

Data Bus On Board Diagnostic Interface (J533)

• Additional information:

Refer to the Owner's Manual.

General Description

The Data Bus On Board Diagnostic Interface (Gateway) is designed as a separate control module. It has the following tasks in the vehicle:

• Perform data exchange between CAN-Bus systems Powertrain CAN-Bus, Convenience CAN-Bus and Infotainment CAN-Bus.

• Transfers diagnostic data of CAN-Bus systems onto K-wire and vice-versa, allowing the data from Vehicle Diagnosis, Testing and Information System (VAS 5051A) to be utilized

• If Data Bus On Board Diagnostic Interface is to be replaced, the work procedure to read out the codes stored in the module must always be performed. Refer to => [ Data Bus On Board Diagnostic Interface, Replace ] Programming and Relearning.

There is the possibility to trace whether to replace individual partial busses (powertrain, comfort and infotainment) during bus rest period (Sleep Mode). Refer to => [ Checking Bus Activity ] Checking Bus Activity.

Furthermore, there is the possibility to check the status of the connection from the Data bus on board diagnostic interface to another bus participant. Refer to => [ Checking Bus Participants ] Checking Bus Participants.

DTC Recognition and Display

Data Bus On Board Diagnostic Interface is equipped with On Board Diagnostics (OBD) which assists troubleshooting.

For troubleshooting, use Vehicle Diagnostic, Testing and Information System (VAS 5051A) in operating mode "Guided Fault Finding".