Check Switch
Remove the wiper deicer switch and measure the switch resistance.
Courtesy of SUBARU OF AMERICA, INC. SWITCH POSITION TERMINAL SPECIFICATION
| Switch position |
Terminal No. |
Standard |
| OFF |
1 and 2 |
More than 1 MΩ |
| ON |
|
Less than 1 Ω |
Replace the wiper deicer switch if faulty.