BMW 2002 Series – Factory Diagnostic Plug
Have you ever seen this plug on your fender near the fuse box, and wondered what it did? Well BMW had the best intentions to maintain the car with it.
As shown in the photos from the original 1974 era sales brochure, BMW had their own diagnostic system to read the car’s systems and conduct service. Fortunately in today’s world you can do this with an inexpensive hand held automotive multi-tester unit.
With that in mind, here’s the diagram you want. You can use this for your own needs in diagnosing and maintaining the car. If you’re handy with a volt meter and electronics, you have a new project!
This may be obvious, but It took me 10 years to figure it out. Occasionally my tii will not start the first time when hot. This is usually because of inattention on my part. Some of these times, the engine will become flooded. Because of the design of its fuel delivery system, the tii will not respond, when flooded, to the classical “fix” of putting the accelerator to the floor to air out the cylinders. The only real “fix” is to wait 1-2 hours.
One time in this situation, I removed the fuse controlling the electric fuel pump, thus depriving the engine of added fuel both from the injectors, but more importantly, from the cold start valve the engine then turned over briefly after starting it with the accelerator on the floor. I stopped the engine immediately, replaced the fuse, and drove on.
contributed by: Thomas A. Butterworth
Last update: 2006-12-07 00:11
Easy removal of the Tii alternator
When removing the tii alternator from the bottom, disconnect the sway bar end links and remove the (4) hold down bolts to move the bar forward enough to allow the alternator (with pulley) to drop out of the engine compartment. Also, if you remove the (4) bolts that hold the radiator to the bulkhead – then shift it over about 1″ toward the passenger side, the long pivot bolt can be removed from the upper alternator mount (without draining the coolant!). I must admit, replacing the v-belt is tough; it is VERY tight between the fan and radiator.
Last update: 2007-04-13 18:52
Author: Jim Gerock