Useful info on using B200 here: Link: Phil's auto related blog, primarily lambos, air suspension, bodykits, and wild paintjobs Reading the fault codes.
1. With the ignition switched OFF open the small hinged black cover (up under the steering column/footwell) that protects the port, and checking that you have the plug the right way round gently insert it into the port (it only goes in one way round), but do not force it as the pins are delicate.
2. Switch the ignition ON - but do not start the car.
3. The unit will display FA - I don’t know what this stands for but it reads the Fault in the Airbag system.
4. Press the ENTER button on the B200
5. The display will show letters or numbers - these are NOT the fault code. These relate to the table in the book that you must use to see the fault. Remember or make a note of the number. I think making notes is good with this type of fault as its always good to keep a record of what you did or tried.
6. Press ENTER again and a number will come up on the display. This is the first fault code. Make a note of this number.
7. Press ENTER again. If another number comes up on the display then this is another fault code. Make a note of this number also. Multiple codes are usual with many faults.
8. Continue pressing ENTER and recording the numbers until the display shows –. That means that there are no further faults. If you continue pressing ENTER you can cycle around the table number, and fault codes again to check you noted them correctly.
9. Check the book that is supplied for what the codes you read actually mean. The tables are fraught with spelling mistakes, but they seem accurate and can be understood. The codes were correct on the cars I have used the unit on, but I would be interested to hear anyone else’s experience.
You must deal with the fault before clearing the code. If you removed and refitted seats then the light should not really have come on, but if you removed the seats and replaced them with non-airbag ones then you will need a resistor in the circuit to “pretend” that the wiring is there. For this look on MINI COOPER :: North American Motoring
and you will find details.
If the car has been in an accident then replace the items as required. Clearing the Fault Codes
Clearing the codes is a very similar process to reading them.
1. If you have removed the unit then repeat 1 and 2 above - plug it in with ignition switched off, and then switch the ignition on, without starting the car.
2. The unit will display FA for fault reading.
3. Press the SCROLL button and it will display cA.
4. Press ENTER.
5. If the display shows — then all is good, you will also notice that the dash light goes off.
6. If it does not show — or the dash light goes off and then comes back on again then you still have a problem.
7. I have been told that trying to clear the code again can sometime clear it, but if not there is still a problem.
8. One of the problems is with the seat connectors, and I understand some people have soldered the plugs to overcome issues, although I have never experienced this myself.
This unit worked well on all the cars I have tried it on, and my own cars are all table 10 in the book.