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Home >> Toyota >> 2004 >> Sienna AWD V6-3.3L (3MZ-FE) >> Repair and Diagnosis >> Wiper and Washer Systems >> Wiper Switch >> Testing and Inspection
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Wiper Switch: Testing and Inspection




WINDSHIELD WIPER SWITCH ASSEMBLY
a. Continuity Check

Front Wiper Switch:




Front Washer Switch:




Rear Wiper Switch:




Rear Washer Switch:




1. Check the continuity between each of the terminals

b. Intermittent Operation Check
1. Connect the voltmeter (+) terminal to the terminal 7 (+1) of the connector, the voltmeter (-) terminal to the terminal 2 (EW) of the connector.
2. Connect the battery (+) to the terminal 7 (+B) of the connector, the battery (-) to the terminal 2 (EW) and the terminal 6 (+S) of the connector.
3. Turn the wiper switch into the INT position.
4. Connect the battery (+) to the terminal 16 (+S) of the connector for 5 seconds.




5. Connect the battery (-) to the terminal 16 (+S) of the connector.Operate the intermittent wiper relay and check voltage between the terminal 7 (+1) and the terminal 2 (EW).

c. Operation Check (Front Wiper)
1. Turn the wiper switch into the OFF position.
2. Connect the battery (+) to the terminal 17 (+B) of the connector, the battery (-) to the terminal 16 (+S) and 2 (EW) of the connector.




3. Connect the voltmeter (+) terminal to the terminal 7 (+1) of the connector, the voltmeter (-) terminal to the terminal 2 (EW) of the connector. Turn the washer switch ON and OFF and check voltage between the terminal 7 (+1) and the terminal 2 (EW).
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