This is an original guide by myself the creator of it any other versions of this guide are hijacks or stolen versions of it...
INPA is factory BMW diagnostics software that connects to all the systems and modules on BMW cars not just engine like generic scanners, it reads all BMW trouble codes and gives live diagnostics and data and GUI pages and test functions...
Ok this is an idiots guide for INPA! it is "NOT" for ppl to say oooh!! its cheaper doin it this way or its piss easy and cheaper using a modded vagcom cable, or a USB interface etc etc!! its just a guide for the simplist and easiest way to hook your car up and diagnose with INPA for the beginner..
1.the absolute simplist way to connect to your OBD2 compliant car or ADS car is via the way it was designed for in the beginning,,and that is via a serial port connection with a INPA compatible serial interface/lead..
2.you can connect to your OBD2 car soley in ADS mode you do not need OBD mode (the cutdown INPA version 63mb on the net is an ADS only version and it is all you need for either type of system if you are using a serial interface and connection)
3.you need an INPA compatible double kkline serial interface cable..
4. an older type cheapo laptop or any laptop with a serial port preferably with XP loaded.
5.a copy of INPA/EDIABAS software cutdown version @ 63MB works fine on OBD2 or ADS cars.
6.if your car is pre OBD2 it will be either a crossover car which has both 20 pin round socket under the bonnet and 16 pin OBD2 in the cabin by your right knee or soley the 20 pin round under the bonnet (ADS socket)
7.if you have soley the 20 pin round socket under the bonnet and or pin 15 is populated? this is a fully ADS car not OBD2..
8.an ADS car you need an ADS adaptor interface or an ADS/OBD switchbox to access all the cars modules
9.you cannot connect to all modules on an ADS car with the cheap 20 pin (ADS) round to 16 pin OBD2 adaptors like that are sold on Ebay..
10.USB interfaces can be and will be more problematic for the INPA beginner plus USB interfaces will NOT connect with INPA set in ADS mode…
11.you can acess all modules, fault code read with INPA, including ABS,airbags,engine ECU,parking sensors and do live diagnostics via a GUI screen and reset codes, airbags and adaptions etc etc
12.No serial port on your laptop? PCMCIA to serial port adaptors or USB to serial port adaptors can be made to work, but again can be seriously problematic for an INPA beginner…
So to sum up if your car is a pre OBD2 car and has a 20 pin round socket under the bonnet with pin 15 present you will need:
A cheap laptop with a serial port and XP loaded.
A basic cutdown version of INPA in ADS mode 63MB in size or a normal version set to ADS
An ADS serial interface or an ADS/OBD serial switchbox interface like below…if you want some basic engine connection and function and a few other modules then the 20 round adpator will suffice most find this sufficient but as mentioned you CANNOT connect to everything with this cheaper configuration ...
If your car is OBD2 you will need..
A cheap laptop with serial port and XP loaded
A basic cutdown version of INPA in ADS mode
An OBD2 BMW INPA compatible serial interface double Kline type..like below.(.NOTE the 20 pin round ADS adaptor in the kit may connect to some modules but not all of them on ADS cars, it is “NOT” a full ADS interface!!)
serial OBD2 kit with 20 pin none full ADS round adaptor
There are other ways to connect and other versions of INPA with different interface combinations etc etc ..this guide is not for that its just an idiots guide for a basic DIY’er whose just found out about INPA and is the easiset and most basic way to get started
modified VAGCOM connection guide...
Feel free to comment if I have ommitted anything or you have something to add…i shall add to it or edit if i i remember anything more of use...
a small update: if you are looking for cheaper robust laptops for your INPA setup? then some older IBM's fit the bill, but IBM laptops stopped having serial ports at the T30 model, models after the T30 still have the architecture for a serial port internally, but no external serial port, but if you connect it to a suitable IBM port replicator dock (very cheap these days on Ebay) you then have a fully functioning serial port on the dock ready for INPA...
an example: i now have a second setup of INPA fully functioning on an IBM T42 which is docked on a port replicator like below..