Why would my lock on my 1991 nisson 300zx not lock the doors

SOURCE: 1991 Nissan Maxima: Removal of front driver side door panel

This is out of my haynes manual
1 disconnect negative battery cable
2 on manual window equipped modesl remove the window crank using a hooked tool to remove the retainer clip.
3 on power window equipped models pry out the armrest switch control plate and disconnect the electrical connections
4 detach the armrest pull handle retaining screw then remove the inside door handle trim bezel
5 insert a wide putty knife, a thin screwdriver or a special trim panel removal tool between the trim panel and the head of the retaining clip to disengage the door panel retaining clips.then remove the remaining door panel retaining screws at the lower edge of the door panel.
6 once all of the clips are screws are disengage detach the trim panel disconnect any electrical connectors and remoe the trim panel from the vehicle by gently pulling it up and out.
7 for access to the inner door remove the door panel support bracket then peel back the watershield taking care not to tear it. it install the trim panel first press the watershield back into place. if necessary add more sealant to hold it in place.
8 installation is the reverse of removal

mark gardner

• 234 Answers
• Posted on Mar 27, 2009

SOURCE: 1991 Nissan 300ZX fuse box diagram needed

first here is the service manual http://www.300zx-twinturbo.com/cgi-bin/manual.cgi

next is the kick panel http://209.85.62.26/12640/0/upload/p979648.jpg

These should be right or very close .

SOURCE: Passenger side door will not open from inside or outside.

linkage on inside of door has come undone. take off inside door panel and you will find a small rod that goes to the lock mechanism where the door closes opposite the hinges. follow the handle to the door lock.the nylon bushing may have broken.they are cheap to purchase at auto part stores.

SOURCE: 1993 nissan 300zx door panel removal to fix lock

Its tricky but you need to pop the half circle off to get to the 14mm bolt. Then roll the window down and there is a plastic circle at the top of the door frame. Pop that off and remove the one plillips screw and pop the panel off to get to the remaining 2 10mm bolts holding the door panel on.

SOURCE: Nissan Murano (05) Power Locks Sticking

The door lock actuator in that door is weak. Need to replace it.