Wiper Switch: Testing and Inspection

WIPER / WASHER: WIPER SWITCH: INSPECTION

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below.





Standard Resistance:






Front Washer Switch






Rear Wiper Switch






Rear Washer Switch






(b) If the result is not as specified, replace the windshield wiper switch assembly.





(c) Check the intermittent operation.

* Connect a voltmeter positive (+) lead to terminal L48-3 (+1) and a negative (-) lead to terminal L49-2 (EW).

* Connect a battery positive (+) lead to terminal L48-2 (+B) and a negative (-) lead to terminal L49-2 (EW) and L48-1 (+S).

* Turn the wiper switch to the INT position.

* Connect a battery positive (+) lead to terminal L48-1 (+S) for 5 seconds.

* Connect a battery negative (-) lead to terminal L48-1 (+S). Operate the intermittent wiper relay and check the voltage between terminals L48-3 (+1) and L49-2 (EW).

OK:

Voltage changes as shown in the illustration.





* If the result is not as specified, replace the windshield wiper switch assembly.