WIPER SWITCH ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (w/ Auto Wiper System)

   
   

   1. Check the front washer operation.

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal E10-3 (+1) and a negative (-) lead to terminal E9-4 (EW).

      2. Turn the power switch on (IG).

      3. Turn the washer switch on and off, and check the voltage between terminals E10-3 (+1) and E9-4 (EW).

         OK
         Voltage changes as shown in the illustration.

         

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

2. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (w/o Auto Wiper System)

   
   

   1. Check the front wiper intermittent operation.

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal E10-3 (+1) and a negative (-) lead to terminal E9-4 (EW).

      2. Turn the wiper switch to the INT position.

      3. Operate the intermittent wiper and check the voltage between terminals E10-3 (+1) and E9-4 (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 washer operation.

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal E10-3 (+1) and a negative (-) lead to terminal E9-4 (EW).

      2. Turn the power switch to on (IG).

      3. Turn the washer switch on and off, and check the voltage between terminals E10-3 (+1) and E9-4 (EW).

         OK
         Voltage changes as shown in the following illustration.

         

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