Nissan 90502-1AA0A Back Door Lock Assembly

To remove the inside door handle, first take off the door trim panel, disconnect the actuator cable from the handle, and unscrew the handle from the backside of the door trim panel. Installation is the reverse of removal. For the key lock cylinder and outside door handle, begin by removing the door trim panel, then take out the door window glass and the door module assembly. Remove the rubber plug from the rear edge of the door to access the Torx bolt securing the key lock cylinder, and loosen the bolt without removing it completely. Disconnect the actuator rod connecting the key lock cylinder to the door latch assembly by popping off the clip and pushing the rod out. If removing the outside door handle, disconnect the upper end of the rod; if removing the latch assembly, disconnect the lower end. Pull the outside door handle to remove the lock cylinder assembly or the outside handle trim cap. To remove the outside handle, pull it out and slide it to the rear, then slide the mounting bracket toward the rear of the vehicle and pull it out of the door, disconnecting the actuator cable. Installation is the reverse of removal. For the door latch, remove the door trim panel, the door window glass, and the door module assembly. Detach the latch from the door by removing the Torx bolts from the rear edge and pulling the latch assembly out. Disconnect the electrical connector and the actuator cable from the door latch before removing the latch assembly. Installation is the reverse of removal.

Every 3,000 miles or every the month of March, the door and hood and trunk hinges and latches should be treated to a few drops of light oil or lock lubricating oil. Also, the door latch strikers should be lubricated lightly to reduce wear or scorching and ensure a smooth running. It is also recommended to use the spray on graphite lubricant to lubricate the door and trunk locks.