how to use on board aircon module for diagnosis
 

for WDB140 : Reading DTCs from Auto A/C system
set left temperature selector wheel to red area
set right temperature selector wheel to the blue area
turn ignition on (do not start the engine)
press left auto button
within 10 sec. simultaneously press REST and O button until display shows permanent stored DTC's, record each DTC, press right auto button to scroll the display
each fault has an specific E 9error) along the digits on the right display window
Turn ignition off and repair your recorded DTCs according to diagnostic chart
to DELETE stored DTC's repeat first five steps then press left [auto] button for the delete to appear then press right [auto] button to delete, continue to press left and right auto button to delete fault code until the display shows E0 00

cooling system pics
 

not sure if these are what you want or if youve already seen them but here they are. i wasnt sure how to send them threw a PM so ive put them in one of your posts.

chassis 221 many thanks yes indeed that is the diagram i need.

your welcome glad to help!!