Z1: Check Courtesy Lamp Operation
With the ignition key in the OFF position, open the left front door. Observe the courtesy lamps. Close the left front door and open the right front door. Observe the courtesy lamps. Close the right front door and open the body side door. Observe the courtesy lamps. Do the courtesy lamps illuminate when the left front door, right front door, or body side door is open? If yes, go to the next step. If no, check the 15A ROOM LAMP fuse located in the interior fuse junction panel. Replace if necessary.