Wiper Switch: Testing and Inspection

WIPER / WASHER: WIPER SWITCH: INSPECTION

INSPECTION

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY





(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Front Wiper Switch





Front Washer Switch





Rear Wiper Switch





Rear Washer Switch





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





(b) Check the intermittent operation.
(1) Connect a voltmeter positive (+) lead to terminal D40-3 (+1) and a negative (-) lead to terminal D39-2 (EW).
(2) Connect a battery positive (+) lead to terminal D40-2 (+B) and a negative (-) lead to terminal D39-2 (EW) and D40-1 (+S).
(3) Turn the wiper switch to the INT position.
(4) Connect a battery positive (+) lead to terminal D40-1 (+S) for 5 seconds.
(5) Connect a battery negative (-) lead to terminal D40-1 (+S). Operate the intermittent wiper relay and check the voltage between terminals D40-3 (+1) and D39-2 (EW).
OK:
Voltage changes as shown in the illustration.





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

Text in Illustration