406 estate 1.9TD Drag link

Jack up car at back with hand break off, grab wheel at top and bottom and pull back and forth, there should be no play in the suspension other than the direction it is supposed to move in. As long as all bushes at joints are intact (ie no splits or cracks) it should pass ok. Give wheel a spin while it is up to check wheel bearing. Mine recently failed on the rear tie bar (short rod about 10" long) bushes were fine but wheel had a side to side movement of a couple of mm, rod had to be replaced as holes for bushes had become oval! (too much high speed cornering) Hope this helps?!