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

Front Wiper Switch

















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

Text in Illustration





(b) Check the intermittent operation.

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

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

(3) Turn the wiper switch to the INT position.

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

(5) 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.

Text in Illustration