Mitsubishi Repair: 2001diamante door locks, power window switch, short circuits

Question
door locks opening and closing at free will

Answer
Garry,
This sounds like a problem in the driver side power window switch assembly.  That switch controls the windows and door locks.  If that switch is damaged, it can cause short circuits and cause the random locking/unlocking that you're experiencing.  Have the switch inspected and replaced if necessary.
Good luck!