Front Wiper

WARNING: This page is about a different car, the 2014 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Check with Subaru Select Monitor
1. Check the input signal when the switch assembly - combination wiper select is turned to LO or HI, using the current data display.
2. Does the input signal change corresponding to the switch operation?
  - Yes → Finish the diagnosis.
  - No → Check the harness.
CHECK THE INTERMITTENT OPERATION (INSPECTION OF THE WIPER SWITCH ALONE).

Fig 1: Combination Switch Connector Terminal Identification (Wiper)
Courtesy of SUBARU OF AMERICA, INC.
1. Set the voltmeter between terminals No. A2 (+) and No. B2 (-).
2. Connect the battery to connector. (Terminal No. A2 (+), terminal No. B2 & A3 (-))
3. Turn the switch assembly - combination wiper select to INT.
4. Connect the battery (+) to the terminal No. A2 for 5 seconds.
5. Connect the battery (-) to the terminal No. B2, and check the voltage between terminals No. A2 and No. A3 during intermittent operation.
6. Perform step ( 1) to ( 5) above when intermittent control switch is in MIN or MAX, and replace the switch if the operation is not as specified.
  Intermittent stationary time
  
  MIN: Approx. 2 seconds
  
  MAX: Approx. 16 seconds
  
  Fig 2: Combination Switch Voltage Graph
  Courtesy of SUBARU OF AMERICA, INC.