Subaru Impreza 2002 Service Manual page 3418

COMBINATION SWITCH (WIPER)
WIPER AND WASHER SYSTEMS
• Intermittent operation inspection
1) Turn the wiper switch to INT.
2) Adjust the intermittent control switch to MAX.
3) Apply battery voltage to switch terminals 16 and 2, and inspect the voltage of terminals 7 and 2. (Measure
the voltage from after the second time the wiper stops.)
B6M1465A
If operation is not as specified, replace the switch.
WW-9