Front Wiper

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Check with Subaru Select Monitor
When the front wiper switch is operated, check the input signal using the Subaru Select Monitor.
1. Prepare the Subaru Select Monitor kit.
2. Turn the ignition switch to ON.
3. On << System Selection Menu >> display, select {Integ. unit mode}.
4. Select the {Current Data Display & Save}.
5. Check the input signal when the front wiper switch is set to LO or HI.
  Is the input signal normal?
  - Yes → Finish the diagnosis.
  - No →
    1. Check the harness.
    2. Check ACC input voltage of body integrated unit.
      Connector & terminal
      
      (B281) No. 5 (+) - Chassis ground (-):
    3. Replace the body integrated unit. < Ref. to BODY INTEGRATED UNIT . >
Check the intermittent operation (inspection of the wiper switch alone)
1. Set the voltage meter between terminal No. 7 (+) and No. 2 (-).
2. Connect the battery to connector. (Terminal No. 17 (+), terminal No. 2 & 16 (-))
3. Turn the front wiper switch to INT.
4. Connect the battery (+) to the terminal No. 16 for 5 seconds.
5. Connect the battery (-) to the terminal No. 16, and check the voltage between terminal No. 7 - No. 2 when performing the 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. 4 seconds
  
  MAX: Approx. 19 seconds
  
  Fig 1: Intermittent Stationary Time Graph
  Courtesy of SUBARU OF AMERICA, INC.