Tacoma Dbl Cab 4WD V6-3.4L (5VZ-FE) (2001)
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Washer Fluid Level Switch: Testing and Inspection
INSPECT WASHER LEVEL SWITCH
a. Check that no continuity exists between terminals 3 and 4 with the switch OFF (float up).
b. Check that continuity exists between terminals 3 and 4 with the switch ON (float down).
If operation is not as specified, replace the switch.