WIPER SWITCH ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (w/ Rain Sensor)

   
   

   1. Check the front washer operation (for Wiper Switch RH Side Type).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal F36-7 (WF) and a negative (-) lead to terminal F36-4 (EW).

      2. Turn the ignition switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals F36-7 (WF) and F36-4 (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 (for Wiper Switch LH Side Type).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal F39-4 (WF) and a negative (-) lead to terminal F39-7 (EW).

      2. Turn the ignition switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals F39-4 (WF) and F39-7 (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 (for Wiper Switch RH Side Type).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal F26-3 (+1) and a negative (-) lead to terminal F36-4 (EW).

      2. Turn the wiper switch to the INT position.

      3. Check the voltage between terminals F26-3 (+1) and F36-4 (EW) with the intermittent wiper operating at different speeds.

         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 (for Wiper Switch LH Side Type).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal F27-2 (+1) and a negative (-) lead to terminal F39-7 (EW).

      2. Turn the wiper switch to the INT position.

      3. Check the voltage between terminals F27-2 (+1) and F39-7 (EW) with the intermittent wiper operating at different speeds.

         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 (for Wiper Switch RH Side Type).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal F36-7 (WF) and a negative (-) lead to terminal F36-4 (EW).

      2. Turn the ignition switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals F36-7 (WF) and F36-4 (EW).

         OK
         Voltage changes as shown in the following illustration.

         

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

   4. Check the front washer operation (for Wiper Switch LH Side Type).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal F39-4 (WF) and a negative (-) lead to terminal F39-7 (EW).

      2. Turn the ignition switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals F39-4 (WF) and F39-7 (EW).

         OK
         Voltage changes as shown in the following illustration.

         

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