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 and is installed in the driver footwell next to the pedal bracket. 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 the K-wire and vice-versa, allowing the data from the Vehicle diagnosis, testing and information system (VAS 5051B) to be utilized.

• If the Data bus on board diagnostic interface (J533) is to be replaced, => [ Replacing Data Bus On Board Diagnostic Interface (J533) ] Replacing Data Bus On Board Diagnostic Interface (J533) must be performed to read out the codes stored in the module.

• Check whether to replace the individual partial buses (powertrain, comfort and Infotainment) during the bus rest period (sleep mode), refer to=> [ Checking Bus Activity ] Checking Bus Activity.

• Check the connection of the data bus on board diagnostic interface to another bus participant, refer to=> [ Checking Bus Participants ] Checking Bus Participants.

Malfunction Recognition and Display

The Data bus on board diagnostic interface (J533) is equipped with on board diagnostic capabilities which facilitate fault finding.

For fault finding, use the Vehicle diagnosis, testing and information system (VAS 5051B) in the "Guided fault finding" operating mode.