Sienna FWD V6-3.3L (3MZ-FE) (2006)
Headlamp Alignment Switch: Testing and Inspection
HEADLIGHT LEVELING SWITCH
ON-VEHICLE INSPECTION
1. HEADLIGHT LEVELING SWITCH
a. Connect the battery positive (+) lead to the terminal 1 and the battery negative (-) lead to the terminal 5.
b. Measure the resistance between the terminal 4 and the battery negative (-) lead when headlight leveling switch is operated.
c. Measure the resistance between the terminal 5 and the battery negative (-) lead when headlight leveling switch is operated.
d. Inspect switch illumination.
1. Connect the battery positive (+) lead to the terminal 3 and the battery negative (-9 lead to the terminal 6, and check that the illumination
comes on.