Land Rover Repair: rangerover air suspension problem, compressor check, air suspension

Question
Dear mr.Altman,
I am electronic and I work as diagnostic in Belgrade Serbia.I have problem with rover air suspension the pump don't run when  
ignition on or when engine start.when i go to actuator test with diagnostic tool pump is running. There is no fault codes  .I check signal from pressure  switch and it's o.k.Do you have any idea for this problem or if you have wiring diagram for air suspension i can easy fix the problem.Thank you very much on your time.Looking to hearing from you soon.

Answer
This sounds like the overheat switch on the compressor, check continuity across the orang and black wires on the compressor plug.  they should be a closed circuit.  I have workshop manuals on CD avalable free here, they have full wiring diagrams and troubleshooting guides.

http://www.rover-renovations.com/Rave-CD-p/rave.htm