Wiper Switch: Testing and Inspection

WIPER / WASHER: WIPER SWITCH: INSPECTION

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (w/o Rain Sensor)

(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 H27-3 (+1) and a negative (-) lead to terminal H28-2 (EW).

(2) Connect an auxiliary battery positive (+) lead to terminal H27-2 (+B) and a negative (-) lead to terminal H28-2 (EW) and H27-1 (+S).

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

(4) Connect an auxiliary battery positive (+) lead to terminal H27-1 (+S) for 5 seconds.

(5) Connect an auxiliary battery negative (-) lead to terminal H27-1 (+S). Operate the intermittent wiper relay and check the voltage between terminals H27-3 (+1) and H28-2 (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





2. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (w/ Rain Sensor)

(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