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Home >> Lexus >> 2007 >> GX 470 V8-4.7L (2UZ-FE) >> Repair and Diagnosis >> Wiper and Washer Systems >> Wiper Switch >> Testing and Inspection
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Wiper Switch: Testing and Inspection

INSPECTION

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY




a. Continuity Check
















1. Check the continuity of each terminal of the connector.

b. Intermittent Operation Check
1. Connect the voltmeter (+) terminal to terminal 7 (+1) of the connector, the voltmeter (-) terminal to terminal 2 (EW) of the connector.
2. Connect the battery (+) to terminal 17 (+B) of the connector, the battery (-) to terminal 2 (EW) and 16 (+S) of the connector.
3. Turn the wiper switch to INT.
4. Connect the battery (+) to terminal 16 (+S) of the connector for 5 seconds.




5. Connect the battery (-) to terminal 16 (+S) of the connector. 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 to OFF.
2. Connect the battery (+) to terminal 17 (+B) of the connector, the battery (-) to terminal 16 (+S) and 2 (EW) of the connector.
3. Connect the voltmeter (+) terminal to terminal 7 (+1) of the connector and the voltmeter (-) terminal to terminal 2 (EW) of the connector. Turn the washer switch to ON and OFF, and check voltage between terminal 7 (+1) and terminal 2 (EW).
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