Short and simple: “DoIP is the packaging of diagnostic messages
in Ethernet frames for communication of a diagnostic tester with a vehicle”
1.DoIP is a standardized diagnostic transport protocol according to
ISO 13400 (see the note below)
2.DoIP is used in combination with the standardized diagnostic protocol
UDS (ISO 14229-5: UDSonIP)
3.Services of UDSonIP are identical to UDSonCAN 4.DoIP with Ethernet 100 Base-TX instead of CAN enables substantial
higher bandwidth
5.Vehicle access with DoIP is backwards compatible using discretionary
pins of the existing diagnostic connector
6.DoIP enables easy integration into various network structures,
even with WLAN
Note: ISO 13400
ISO 13400-1:2011 describes the general use cases and communication scenarios which are covered by an Internet Protocol-based vehicle communication standard. Each use case drives specific communication capabilities of the vehicle communication interface, for instance in order to be interoperable in an existing computer network.
The diagnostic communication over Internet Protocol (DoIP) protocol supports the standardized service primitive interface as specified in ISO 14229-2.
The descriptions in ISO 13400-1:2011 cover different application layer implementations, such as:
enhanced vehicle diagnostics (system diagnostics beyond legislated functionality, non-emissions-related system diagnostics); WWH-OBD (World-Wide Harmonized On-Board Diagnostics) as specified in ISO 27145-2 and ISO 27145-3.
What’s the advantage of DoIP?
Performant handling of huge data volumes
Time-saving at ECU Flash Programming
Cost-efficient because no VCI is necessary
Simple integration to IT Infrastructure
Flexible use because of standardized communication
Integrated with other standards for vehicle diagnosis
Future-proof technology enables various use cases
Why DoIP is applied to automotive / cars?
Increasing interconnection of vehicles and their environment
Driving assistance and infotainment systems cause huge data volume
Increasing time for flash programming at production line and after-sales service
DoIP as a performant and flexible vehicle access
What is a SDconnect DoIP device?
SDconnect DoIP devices for diagnosis of the model 222 S-Class have “SDconnect DoIP” on the model plate of the device (system number 170000 or higher). SDconnect DoIP includes an Ethernet switch, which switches the TCP/IP messages in the event of DoIP diagnosis to the vehicle side.
It’s a cable used to updated to DoIP with SD connect C4 clone.
How to rework SDconnect C4 for DoIP diagnosis?
The difference between DoIP and non-DoIP is pcb with Ethernet switch or not.
For SDConnect C4 china clone: rework and update to DoIP
You need:
Here is a parts kit to upgrade your SDConnect to DoIP:
DoIP piggyback board, power board and new DoIP cable. If your SDConnect is china made you have to solder one missing connector.
What has been done:
Housing Keyboard replaced Side metal covers replaced Top plastic cover replaced Battery case with sensor and battery lock replaced Full set of screws replaced
Processor board MPC processor replaced C161 processor replaced PIC replaced Full set of RAM(6 chips) replaced Full set of ROM(4 chips) replaced PHY LAN controller replaced PCMCIA slot replaced 20pin aux connector added SD slot added Some minor improvements, resoldering, cleaning etc.
Relay board Can chokes added All capacitors replaced Main power regulators and inductors replaced Some minor improvments, resoldering, cleaning etc.
Done! And your SD connect C4 DoIP now.
Credit to Anturage who made such great job. Note that experienced tech is required to PCB rework; otherwise, you would damage your device- TRYING ON YOUR OWN RISK.
Also, you have another way for W222 DoIP diagnosis, that is: go for Xentry Connect C5. No matter it’s original or not, it has good compatibility of DoIP diagnosis.
