WIPER SWITCH ON-VEHICLE INSPECTION

INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

1. Check the front wiper intermittent operation (w/ Intermittent timing adjustment).

   1. Connect a voltmeter positive (+) lead to terminal I32-3 (+1) and a negative (-) lead to terminal I31-4 (EW).

      

      Text in Illustration

      *a	Component with harness connected (Windshield Wiper Switch Assembly)

   2. Turn the wiper switch to the INT position.

   3. Operate the intermittent wiper relay and check the voltage between terminals I32-3 (+1) and I31-4 (EW).

      OK
      Voltage changes as shown in the illustration.

      

      If the result is not as specified, replace the windshield wiper switch assembly.

2. Check the front wiper intermittent operation (w/o Intermittent timing adjustment).

   1. Connect a voltmeter positive (+) lead to terminal I32-3 (+1) and a negative (-) lead to terminal I31-4 (EW).

      

      Text in Illustration

      *a	Component with harness connected (Windshield Wiper Switch Assembly)

   2. Turn the wiper switch to the INT position.

   3. Operate the intermittent wiper relay and check the voltage between terminals I32-3 (+1) and I31-4 (EW).

      OK
      Voltage changes as shown in the illustration.

      

      If the result is not as specified, replace the windshield wiper switch assembly.

3. Check the front washer operation.

   1. Connect a voltmeter positive (+) lead to terminal I32-3 (+1) and a negative (-) lead to terminal I31-4 (EW).

      

      Text in Illustration

      *a	Component with harness connected (Windshield Wiper Switch Assembly)

   2. Turn the ignition switch to ON.

   3. Turn the washer switch on and off, and check the voltage between terminals I32-3 (+1) and I31-4 (EW).

      OK
      Voltage changes as shown in the following illustration.

      

      If the result is not as specified, replace the windshield wiper switch assembly.