Fuel Tank Sending Unit: Camry

Connect a series of 3 1.5-volt dry cell batteries. Connect positive lead of batteries to terminal No. 2 and negative lead to terminal No. 4. Check that voltage changes between terminals No. 3 and 4 as sending unit float is moved from full to empty positions. With ignition on, measure voltage at terminals No. 3 and 4 of sending unit connector and ground.