Step 11 - Inspect Fuel Level Warning Switch

WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: It will take a short time for bulb to light up.

Fig 1: Testing Fuel Level Warning Switch (1 Of 2)

Apply battery positive voltage between terminal 1 and 3, and through a 3.4 W test bulb, and check that the bulb lights up.
Submerge the switch in fuel, and check that the bulb goes out.

Fig 2: Testing Fuel Level Warning Switch (2 Of 2)
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If operation is not as specified, replace the sender gauge.