Q: How to Test and Replace the Fuel Level Sensor on a Toyota Land Cruiser's Fuel-Injected Engine?
A: For 1988-1990 models, you'll need to remove the fuel tank to access the Fuel Level Sensor. For 1991-1996 models, remove the middle seat for access. Before testing, determine the tank's actual fuel level. On 1988-1990 models, test resistance via the harness connector near the tank. On 1991 and later models, access the unit after removing the rear seat and fuel pump cover. The full tank resistance should be around 17 ohms for 1988-1990 models and 3.0 ohms for 1991 and later models. The nearly empty tank resistance should be about 120 ohms for 1988-1990 and 110 ohms for 1991 and later. Incorrect readings require replacement. The unit's resistance can also be tested with the float arm down (empty) and up (full). To replace, remove the fuel pump assembly, extract the Fuel Level Sensor, disconnect the electrical connectors, and remove the bracket screw. Reverse steps for installation.