Power door lock problem

[eyvind.spangen@c2i.net (Eyvind Spangen)]

The lock on the passenger side on my '87 5k is not working correct. 

If I lock/unlock the doors with key in driver's door, it will
lock/unlock just as it should.
If I lock the doors by using the passenger side lock, only that door
will lock, and the vacuum pump is not running. When I unlock, I hear
the pump is running as it should.

It looks to me like something is wrong with the switch that triggers
the pump when locking. How do I fix it?


ES