How To: Modify a VAGcom KKL Cable for use with your BMW

[wice]

i can only conect to dme with inpa and scanner.other modules cant .bridged pins 7+8 and same problem .in scanner error message cant connect with ike and ews.enybody can help?
p.s. sorry for bad english

[328 Power 04]

i can only conect to dme with inpa and scanner.other modules cant .bridged pins 7+8 and same problem .in scanner error message cant connect with ike and ews.enybody can help?
p.s. sorry for bad english

It helps to tell us on which car... if you have a 20-pin port under the bonnet, you must use that.

[geargrinder]

It helps to tell us on which car... if you have a 20-pin port under the bonnet, you must use that.

Or... bridge a couple pins at the 'pac-man' round connector so that then you can use the one inside the car for everything.

[wice]

i dont have round connector.only inside car,i bridge 1-2 and 7-8 and the same thing. with scanner 1.4 and inpa cable.car 520d turing 2001yearin obd 2 in car there are wiring on 7 annd 8 too
i only read engine
i have and vagcom blue interface but cant make to work too
i tried inpa on other e39 520 and works.also try on my e 38 connect to round connector over adapter and works inpa and scanner.but dont work on this friend touring
and which pins in round connector i need to bridge to use obd2 connector in e46.i raed them with adapter under bonnet,but it be nice to use it in car.thanks a lot and sorry at too much questions
p.s.if i write in wrong toppic please someone to move in right place.thanks

[geargrinder]

i tried inpa on other e39 520 and works.also try on my e 38 connect to round connector over adapter and works inpa and scanner.but dont work on this friend touring

Well then I think its clear - the car has a problem not the cable pins or anything else like that.

The DME (and EGS/AGS if you have automatic transmission) should be on pin 7

Cluster and ABS, should be on pin 8

But - for everything else - the diagnostics go THROUGH the cluster as a gateway.

So: if your cluster is screwed up and you can't talk to it, then you can't get to any of the things 'behind it' either. See below0

(ignore the 20-pin part of the diagram below - the TXD1 and TXD2 for a post 2000 car both go to OBD on pins 7 & 8.)

[wice]

what i should to do.can i connect directly somewere?i dont tell i have problem with radio .dont work ibus and i connect new wire from radio to light module and radio work.how a can connect this e39 to talk with other modules

- - - Updated - - -

then i need to change instrument cluster to try?

[geargrinder]

Don't start adding wires. You'll just create more nightmare mess instead of fixing what the problems are.

You can't just wire the Ibus to the OBD, it needs to go through the cluster for the software to talk properly.

yes cluster maybe could have some problem. could be the cluster is bad, or, could only be wires or connectors to the cluster. if you can't 'talk' to the cluster then that's the very first thing to fix. the cluster "runs" the I and K buses for all the other modules, so if its broken or not wired correctly they can't talk to each other even if they are perfectly fine. yes trying a spare cluster if you can might help. but if it is a wiring problem in the car then there could be a short someplace else keeping the cluster from being able to communicate. you can also test the I bus and K bus wires and see if they have voltage when the car is turned on but to fully test them is a bit more complicated.

- - - Updated - - -

By the way - would you please create your own thread instead of posting here? Better for you to have your own thread because this has nothing really to do with modifying VAG cables. Your cables are fine obviously.

Start your own thread with a sensible title like "Cannot communicate with any modules except DME".

https://www.bimmerforums.com/forum/n...ewthread&f=233

[wice]

ok i start.thanks again