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Home >> Toyota >> 2003 >> Highlander 2WD L4-2.4L (2AZ-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
1. Check the continuity of each terminal of the connector




Front Wiper Switch




Front Washer Switch




Rear Wiper Switch

b. Intermittent Operation Check (Front Wiper)
1. Connect the positive (+) lead from the voltmeter to terminal 7 (+1) and the negative (-) lead to terminal 2 (EW).
2. Connect the positive (+) lead from the battery to terminal 17 (+B) and the negative (-) lead to terminal 2 (EW) and 16 (+S).
3. Turn the wiper switch INT position.
4. Connect the positive (+) lead from the battery for 5 sec.




5. Connect the negative (-) lead from the battery to terminal 16 (+5), operate the intermittent wiper relay and check voltage between terminal 7 (+1) and terminal 2 (EW).




c. Operation Check (Front Wiper)
1. Turn the wiper switch OFF.
2. Connect the positive (+) lead from the battery to terminal 17 (+B) and the negative (-) lead to terminal 2 (EW) and 16 (+S).
3. Connect the positive (+) lead from the voltmeter to terminal 7 (+1) and the negative (-) lead to terminal 2 (EW). Turn the washer switch ON and OFF and check voltage between terminal 7 (+1) and terminal 2 (EW).
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