1996 Suzuki X90 Security System

I am trying to make my remote access remote lock and unlock the power doors. The number on the remote is H50600-2 it is currently linked to the system and will arm and disarm the alarm, but the doors will only unlock. After doing some research the manual said it needs to be placed in passive arming mode in order for the power locks to engage upon arming (locking). But it also states I ahve to go into the dealer for this. Can you possibly explain how I can put the system in passive arming mode by myself?