Sienna AWD V6-3.3L (3MZ-FE) (2004)
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Headlamp Dimmer Switch: Testing and Inspection
HEADLAMP DIMMER SWITCH ASSY
a. Inspect light control switch continuity.
Check that there is continuity between the at each switch position as shown in the chart.
b. Inspect headlight dimmer switch continuity.
Check that there is continuity between the terminals at each switch position as shown in the chart.
c. Inspect turn signal switch continuity.
Check that there is continuity between the terminals at each switch position as shown in the chart.
d. Inspect front fog light switch continuity.
Check that there is continuity between the terminals at each switch position as shown in the chart.
