Wiper Switch: Testing and Inspection

WIPER AND WASHER: WIPER SWITCH: INSPECTION

1. INSPECT WINDSHIELD WIPER SWITCH

(a) Check the resistance.





(1) Measure the resistance and check the results in accordance with the value(s) in the tables below.

Standard Resistance:

Front Wiper Switch






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

Standard Resistance:

Front Washer Switch






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

Standard Resistance (w/ Rear wiper):

Rear Wiper and Washer Switch






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

(b) Check the intermittent operation.

(1) Connect the positive (+) voltmeter terminal to terminal 7 (+1) and the negative (-) voltmeter terminal to terminal 2 (EW).

(2) Connect the positive (+) battery lead to terminal 18 (+B) and the negative (-) battery lead to terminals 2 (EW) and 9 (+S).

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

(4) Connect the positive (+) battery lead to terminal 16 (+S) for 5 seconds.

(5) Connect the negative (-) battery lead to terminal 16 (+S). Operate the intermittent wiper relay and check the voltage between terminals 7 (+1) and 2 (EW).

Standard:

Refer to the illustration below.





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

(c) Check the operation (front washer).

(1) Turn the wiper switch off.

(2) Connect the positive (+) battery lead to terminal 18 (+B) and the negative (-) battery lead to terminals 16 (+S) and 2 (EW).

(3) Connect the positive (+) voltmeter terminal to terminal 7 (+1) and the negative (-) voltmeter terminal to terminal 2 (EW). Turn the washer switch on and off, and check the voltage between terminals 7 (+1) and 2 (EW).

Standard:

Refer to the illustration below.





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