Obd adapter

sebi schrieb:

There are 2 different communication modes:

1) Manufacturer mode -> e.g. for VCDS connecting via address 01

2) EOBD mode -> e.g. VCDS connecting via EOBD button OR used for emission test OR used for some dataloggers OR used for cheap generic diagnostic tool

There are different commands used.

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My experience with BWA Engine and Bosch MED 9 ECU:

• OBD communication needs adapter because KTM changed CAN High and CAN Low Signal Pin (or you simply change the pins)
• VCDS manufacturer communication --> works
• VCDS EOBD/OBD II communication --> does not work (see screenshot from VCDS)
• EOBD/OBD II communication via HHOBD Device --> does not work

Questions:

Is VCDS Manufacturer communication based ond KWP2000 Protcol?

Which tool is necessary to unlock EOBD on MED9 BWA engine ECU?

You need some chiptuning tool to read/write memory from ecu, then you need to find out where is the bit to activate the EOBD communication.

Which software version is it? 0020, 0030, 0040? Maybe it was fixed in newer versions, in version 0030 it seems not to work...

Hi - so I managed to make this work on my 2008 XBow with CDL engine fairly simply.

I bought an OBD extension cable from Amazon which had exposed wiring. After a bit of googling for the connector manufacturer/datasheet I managed to see how to extract the pins 3,11,6,and 14. I reinserted 3 and 11 into the place vacated by 6 and 14...and voila, one working OBD port!

https://www.amazon.co.uk/dp/B0…yo2ov_dt_b_fed_asin_title

I bought an extension cable with two female jacks so that I would retain a 'normal' obd port too. Ultimately I am building taps for my Racelogic VBOX HD2 system to pick up CAN data (Revs, Throttle position, etc) and power.

The OBD reader I used is a simple Carly one...but it works now. Managed to clear an EML code (thugh do need to figure out why P0501 is showing!)