Wiper Switch (For Sedan) Inspection

Vehicle Exterior. Yaris. Ncp93, 131
Wiper Washer. Yaris. Ncp93, 131

  1. INSPECT WIPER SWITCH

Wiper Switch (For Sedan) -- Inspection



1. INSPECT WIPER SWITCH


Yaris. Ncp93, 131.Wiper Washer.Wiper And Washer System (For Sedan).Wiper Switch (For Sedan) Inspection

  1. Check the resistance.

    1. Measure the resistance and check the results in accordance with the value(s) in the tables below.

      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      +B (B-2) - +1 (B-3)
      		MIST
      		Below 1 Ω
      +S (B-1) - +1 (B-3)
      		OFF
      		Below 1 Ω
      +S (B-1) - +1 (B-3)
      		INT
      		Below 1 Ω
      +B (B-2) - +1 (B-3)
      		LO
      		Below 1 Ω
      +B (B-2) - +2 (B-4)
      		HI
      		Below 1 Ω
      If the result is not as specified, replace the wiper switch.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      EW (A-2) - WF (A-3)
      		OFF
      		10 kΩ or higher
      EW (A-2) - WF (A-3)
      		ON
      		Below 1 Ω
      If the result is not as specified, replace the wiper switch.


  1. Check the intermittent operation.

    1. Connect the positive (+) voltmeter terminal to terminal 3 (+1) of the B connector and the negative (-) voltmeter terminal to terminal 2 (EW) of the A connector.

    2. Connect the positive (+) battery lead to terminal 2 (+B) of the B connector and the negative (-) battery lead to terminals 2 (EW) of the A connector and 1 (+S) of the B connector.

    3. Turn the wiper switch to the INT position.

    4. Connect the positive (+) battery lead to terminal 1 (+S) of the B connector for 5 seconds.



    5. Connect the negative (-) battery lead to terminal 1 (+S) of the B connector. Operate the intermittent wiper relay and check the voltage between terminals 3 (+1) of the B connector and 2 (EW) of the A connector.

      Standard:
      Refer to the illustration below.


      Yaris. Ncp93, 131.Wiper Washer.Wiper And Washer System (For Sedan).Wiper Switch (For Sedan) Inspection

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


  1. Check the operation (front washer).

    1. Turn the wiper switch off.

    2. Connect the positive (+) battery lead to terminal 2 (+B) of the B connector and the negative (-) battery lead to terminals 1 (+S) of the B connector and 2 (EW) of the A connector.



    3. Connect the positive (+) voltmeter terminal to terminal 3 (+1) of the B connector and the negative (-) voltmeter terminal to terminal 2 (EW) of the A connector. Turn the washer switch on and off, and check the voltage between terminals 3 (+1) of the B connector and 2 (EW) of the A connector.

      Standard:
      Refer to the illustration below.


      Yaris. Ncp93, 131.Wiper Washer.Wiper And Washer System (For Sedan).Wiper Switch (For Sedan) Inspection

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