T100 SR5 Extra Cab Pickup 2WD V6-3.4L (5VZ-FE) (1997)
Low Fuel Lamp/Indicator: Testing and Inspection
Fuel Level Warning Switch
INSPECT WARNING LIGHT SWITCH
1. Apply battery positive voltage between terminal 1 and 3, and through a 3.4 W test bulb, check the bulb lights up.
HINT: It will take a short time for bulb to light up.
2. Submerge the switch in fuel, check that the bulb goes out.
If operation is not as specified, replace the sender gauge.