Toyota 89461-48020
Pressure Relief Valve

A proper Fuel Tank Pressure Sensor installation begins with installing the vapor pressure sensor assembly and its tube joint clip and cover while following these crucial requirements: leaving no foreign matter or scratches on the connecting area alongside complete assembly insertion and proper placement of the tube joint clip on the vapor pressure sensor assembly collar. Check that the fuel tube joint is properly attached after the installation of the tube joint clip. Next, connect the connector. The first step is to install the rear floor service hole cover while finishing with the rear seat cushion assembly before placing the fuel tank cap assembly.

First step to remove the Fuel Tank Pressure Sensor involves removing the Fuel Tank Cap Assembly. The first step involves removing the Rear Seat Cushion Assembly and then proceeding with taking off the Rear Floor Service Hole Cover. The procedure starts with disconnecting the Vapor Pressure Sensor Assembly connector and proceeding to remove the cover and tube joint clip before pulling out the vapor pressure sensor. Start the operation only when you verify that the connector area is clear of all foreign substances including dirt and if needed you should clean it to maintain the O-ring seal integrity. When working on this step you should not employ any tools and in case the fuel suction plate or vapor pressure sensor are difficult to remove you should apply gentle motions to free them but maintain a cautious approach to remove them from the suction plate.