Like many other things do not work on 16 years old Passat the cruise control is broken from unknown times. I started by checking the voltage on the connector for the control modul (located below and behind the lighter). There is no power. First I see on the scheme a fuse #51, 5A, located above the block with relays and fuses under the steering wheel. I found a 15A but not 5A.
Tracing the cables I found the 2 connectors and the odd is it looks like the cables are wrong mounted in one of them.
black / blue goes not against black / blue and black do not goes against the red / yellow. Could the factory made it wrong and this cruise control never worked on this car? By looking at the scheme I should swap the locations of black / blue with black. What you think?
Here is the wiring diagram http://106.imagebam.com/download/mij...20CruiseCM.jpg