Front Wiper

1. CHECK WITH SUBARU SELECT MONITOR. 
   NOTE: For detailed operation procedures, refer to "Application help".
   1. Check the input signal when the switch assembly - combination wiper select is turned to LO or HI, using the [Data monitor] display.

   Does the input signal change corresponding to the switch operation?

   • Yes: Finish the diagnosis.
   • No: Check the harness.
2. CHECK THE INTERMITTENT OPERATION (INSPECTION OF THE WIPER SWITCH ALONE).

Fig 1: Inspecting Of Wiper Switch Alone

Courtesy of SUBARU OF AMERICA, INC.

1. Set the voltmeter between terminal No. A2 (+) and No. B2 (-).
2. Connect the battery to connector. (Terminal No. A2 (+), terminal No. B2 and 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.

Intermittent stationary time 

MIN: Approx. 2 seconds

MAX: Approx. 16 seconds

Fig 2: Checking Intermittent Stationary Time

Courtesy of SUBARU OF AMERICA, INC.

Is the intermittent stopping time approx. 2 seconds (in MIN) or approx. 16 seconds (in MAX)?

• Yes: Intermittent operation is normal.
• No: If operation is not as specified, replace the switch.