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:

• Performs 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 the Vehicle Diagnostic Tester to be used

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

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 Data Bus On Board Diagnostic Interface to another bus participant.

DTC Recognition and Display

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

The "Guided Fault Finding" function is to be used for troubleshooting of the systems as described in => [ Vehicle Diagnosis, Testing and Information Systems ] Vehicle Diagnosis, Testing and Information Systems.