Wiper Switch: Testing and Inspection

WIPER AND WASHER: WIPER SWITCH: INSPECTION

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

(a) Check the continuity of the windshield wiper switch assembly.





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

Standard resistance:

Front Wiper Switch
Front Washer Switch










(b) Intermittent Operation Check

(1) Connect the voltmeter (+) terminal to terminal E20-3 (+1) of the connector and the voltmeter (-) terminal to terminal E19-2 (EW).

(2) Connect a positive (+) battery lead to terminal E20-2 (+B) of the connector and a negative (-) battery lead to terminals E19-2 (EW) and E20-1 (+S).

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

(4) Connect a positive (+) battery lead to terminal E20-1 (+S) of the connector for 5 seconds.

(5) Connect a negative (-) battery lead to terminal E20-4 (+2) of the connector. Operate the intermittent wiper adjustment ring and measure the voltage between terminals E20-3 (+1) and E19-2 (EW).