Scanner - obd1 and obd2 verification

[Zephyr]

Trying to understand this, please help.
My 2001 model has two ports.
The 21 pin in the engine compartment
The 19 pin at drivers side inside.
My scanner is the iCarsoft BMM V2.

I connect the scanner to the obd2 port (inside) and 7 modules appear.
I then bridge the pins at the 21 pin (engine bay) and 45 modules appear - and off course not all of them are available since they do not exist in the car.

From what I read using an 21 to 19 adaptor (or bridging the pins in the round one) you get “full” access to the ecu and all modules.
This may be true. But I still have to verify.

So, can anyone who has a 21pin (obd1) scanner and an RS232 laptop or other OBD1 scanner, verify that:

Using an adapter (21 to 19) or bridging the 21pin, you can read ALL the features as if you were using a round to rs232 reader?

hope what I said makes some sense….

 

[colb]

Round 20 pin will read all modules on the car 16 pin obd2 under steering will only read engine and transmission modules. You do need the 20 pin to 16pin adapter cable to plug your scanner in to use the 20 pin socket. Adapter cables available already to use on ebay

 

[Zephyr]

Hi, thanks for the answer.
My issue is that I followed the instruction this video

View: https://youtu.be/kWKcWBMESDQ


and I can read more (if not all) functions from inside the car.

so I am just wondering if someone has tried to connect an OBD1 without an adapter to an RS232 port scanner or PC.
an if so, did he see more functions than scanning with an adaptor from the OBD2 port, or from the OBD1 port with an adaptor.

do older scanners connected directly to the round port in the engine compartment see more funnctions?
do we miss functions usind an adaptor?

I guess I will never know unless I find an OBD1 to RS232 cable and a laptop to test…

thanks.

 

[colb]

No you should see all modules using the round diagnostic socket with adapter cable depending on what obd2 scanner you are using. BMW INPA software will see everything and BMWScanner 1.4 on a laptop will scan all modules fitted to your car. Obd1 was used on early cars they changed around 1998/9 to obd2 it's the early cars that need the older style connection on a laptop. Handheld Creator 310+ is ok on 1999onwards cars using an adapter cable on the 20pin socket

 

[Zephyr]

Thanks. i have the same scanner the guy in the video has, iCarsoft BMM V2 and everything is fine except the OBDii/EOBD function second down on the left.
that is why I wonder…
But since I see all others, I guess it is ok….