Check continuity between switch terminals.
If the test fails, replace the switch.
1. Checking the operation of the switch.
A) battery to terminal 17 (+) and 14 (-) switch.
b) Connect a voltmeter to terminals 217 (+) and 14 (-) switch.
Troubleshooting the wiper and washer
Turn on the ignition and turn the switch to. Connect the INT position: the device should register battery voltage.
V) Transfer the voltmeter probe from terminal 14 to terminal 20, then to terminal 17 and immediately again to terminal 14. The device should register zero voltage within 3-5 seconds and return to registering the initial voltage.
If the test fails, replace the switch.