Aus dem Bimmerboard.
Werde ich mal versuchen.
From the E31 forum of BF: This only works on Early E31, start of production to 09/93 With SIEMENS 5WK4 027 (65771382905) modules. This module is also found in some E23,e24,e30,e32,e34, and e36, procedure should work for those as well. This worked for mine even when DIS/INPA/Autologic, and all those others failed to communicate.
1. Turn the ignition switch to the off position.
2. Install a jumper from in pin #15 of the engine diagnostic connector to ground.(Since this is awkward to do in the timing given in this procedure, i used a small screwdriver and tapped into pin 6 at the orange x74 connector behind the glovebox, either will work)
3. Turn the ignition switch to the on (run) position but, do not start the car.
4. After five seconds, disconnect the jumper.
5. Wait another five seconds.
6. Reconnect the jumper
7. After five seconds, disconnect the jumpers.
8. Wait five seconds after disconnecting the jumpers.
9. Turn the ignition switch off.
10. Start the car. The air bag warning light should clear after approximately 10 seconds. If the light does not clear repeat the procedure. If, after three attempts, the light does not clear, there is most likely a problem with the air bag system which needs to be repaired.
by legoman67; 05-25-2014 posted in the E31 forum BF, do it at your own risk.
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