WIPER SWITCH ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (for LHD)

   
   

   1. Check the front wiper intermittent operation.

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal I125-3 (+1) and a negative (-) lead to terminal I124-4 (EW).

      2. Turn the engine switch to ON.

      3. Turn the wiper switch to the INT position.

      4. Operate the intermittent wiper and check the voltage between terminals I125-3 (+1) and I124-4 (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 I124-7 (WF) and a negative (-) lead to terminal I124-4 (EW).

      2. Turn the engine switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals I124-7 (WF) and I124-4 (EW).

         OK
         Voltage changes as shown in the following illustration.

         

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

   3. Check the rear washer operation.

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal I125-5 (WR) and a negative (-) lead to terminal I124-4 (EW).

      2. Turn the engine switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals I125-5 (WR) and I124-4 (EW).

         OK
         Voltage changes as shown in the following illustration.

         

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

2. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (for RHD)

   
   

   1. Check the front wiper intermittent operation (for LH Side).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal I30-2 (+1) and a negative (-) lead to terminal I29-7 (EW).

      2. Turn the engine switch to ON.

      3. Turn the wiper switch to the INT position.

      4. Operate the intermittent wiper and check the voltage between terminals I30-2 (+1) and I29-7 (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 LH Side).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal I29-4 (WF) and a negative (-) lead to terminal I29-7 (EW).

      2. Turn the engine switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals I29-4 (WF) and I29-7 (EW).

         OK
         Voltage changes as shown in the following illustration.

         

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

   3. Check the rear washer operation (for LH Side).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal I30-10 (WR) and a negative (-) lead to terminal I29-7 (EW).

      2. Turn the engine switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals I30-10 (WR) and I29-7 (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 wiper intermittent operation (for RH Side).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal I125-3 (+1) and a negative (-) lead to terminal I124-4 (EW).

      2. Turn the engine switch to ON.

      3. Turn the wiper switch to the INT position.

      4. Operate the intermittent wiper and check the voltage between terminals I125-3 (+1) and I124-4 (EW).

         OK
         Voltage changes as shown in the illustration.

         

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

   5. Check the front washer operation (for RH Side).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal I124-7 (WF) and a negative (-) lead to terminal I124-4 (EW).

      2. Turn the engine switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals I124-7 (WF) and I124-4 (EW).

         OK
         Voltage changes as shown in the following illustration.

         

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

   6. Check the rear washer operation (for RH Side).

      
      
      1. 

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

         Connect a voltmeter positive (+) lead to terminal I125-5 (WR) and a negative (-) lead to terminal I124-4 (EW).

      2. Turn the engine switch to ON.

      3. Turn the washer switch on and off, and check the voltage between terminals I125-5 (WR) and I124-4 (EW).

         OK
         Voltage changes as shown in the following illustration.

         

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