The car is actually a 1987, with the passenger front door closed, presumably locked and won't open.
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1990 Jaguar XJ6 Question: Door Lock
Answer #1hemicuda July 06, 2009, 15:56Master
I see a door lock relay available from the dealer.
patrick mannion from Greg Solow's Engine Room, July 07, 2009, 00:24Master
These cars had problems with the door handles wearing out and breaking resulting in being unable to open the door from the outside. The door lock solenoid failed as well. The door panel has to be removed to inspect what is going on (difficult to remove the door panel with out being able to open the door) but its the next step in finding out what is wrong.