Hallo,
ich hatte das gleiche Problem und hab mich an folgendes gehalten und es hat funktioniert!
[I]More details:
In my case, the wire I'm talking about is the Voice Signal Negative wire. It is Pin 18 on the blue navigation plug on the back of the MK4 unit (connector X1313). This wire should not be grounded. If there is continuity between this wire and your car chasis, then this is most likely your problem.
Here are the steps I used to fix my car ('99 750iL):
1) Disconnect the battery....
2) Pull the nav unit out of the car
3) unplug the harness and antenna cable and set the nav unit aside.
4) pry the inner black connector out of the blue harness plug with a small screwdriver. Be careful not to break the blue cover.
5) Verify with a multimeter that pin 18 is grounded. If not, check all the other wires to see if any are grounded that shouldn't be. Maybe other wires could cause a similar problem.
6) Remove the pin 18 wire (yellow w/ brown stripe in my car) by pressing the small metal pin and carefully pulling the wire out of the black connector.
7) Once out just tape the wire back with electrical tape, put the connector back into the blue plug, and hook back up the nav computer.
8) Reconnect the battery and see if it is your lucky day.[/i]
|