WIPER SWITCH > INSPECTION

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


    E178095E01

  1. Check the windshield wiper switch.
    Text in Illustration 
    *1
    		Component without harness connected
    (Wiper Switch)

    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Front Wiper Switch 
      Tester Connection
      		Switch Condition
      		Specified Condition
      B-1 (+S) - B-3 (+1)
      		AUTO
      		Below 1 Ω
      OFF
      B-2 (+B) - B-3 (+1)
      		MIST
      LO
      B-2 (+B) - B-4 (+2)
      		HI

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

  1. Check the front washer switch.

    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      A-2 (EW) - A-3 (WF)
      		On
      		Below 1 Ω
      Off
      		10 kΩ or higher

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



  1. Check the intermittent operation.

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

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

    3. Turn the wiper switch to the INT position.

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



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

      OK:
      Refer to the illustration below.



      E157470E03

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



  1. Check the front washer operation.

    1. Turn the wiper switch OFF.

    2. Connect the battery positive (+) lead to terminal B-2 (+B) and the negative (-) lead to terminals B-4 (+2) and A-2 (EW).

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



    4. Turn the washer switch ON and OFF, and check the voltage between terminals B-3 (+1) and A-2 (EW).

      OK:
      Refer to the illustration below.



      E157493E03

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

  1. Check the rear wiper switch.

    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Rear Wiper Switch 
      Tester Connection
      		Switch Condition
      		Specified Condition
      A-2 (EW) - A-6 (C1R)
      		LO
      		Below 1 Ω
      A-2 (EW) - A-7 (+1R)
      		HI
      A-2 (EW) - A-6 (C1R)
      		OFF
      		10 kΩ or higher
      A-2 (EW) - A-7 (+1R)

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

  1. Check the rear washer switch.

    1. Measure the resistance of the switch.

      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      A-2 (EW) - B-5 (WR)
      		ON
      		Below 1 Ω
      OFF
      		10 kΩ or higher

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



2. INSPECT WIPER SWITCH ASSEMBLY (w/o Rain Sensor)


    E178095E02

  1. Check the resistance.
    Text in Illustration 
    *1
    		Component without harness connected
    (Wiper Switch)

    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Front Wiper Switch 
      Tester Connection
      		Switch Condition
      		Specified Condition
      B-1 (+S) - B-3 (+1)
      		INT
      		Below 1 Ω
      OFF
      B-2 (+B) - B-3 (+1)
      		MIST
      LO
      B-2 (+B) - B-4 (+2)
      		HI

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

      Standard Resistance:
      Front Washer Switch:
      Tester Connection
      		Switch Condition
      		Specified Condition
      A-2 (EW) - A-3 (WF)
      		ON
      		Below 1 Ω
      OFF
      		10 kΩ or higher

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

      Standard Resistance:
      Rear Wiper and Washer Switch:
      Tester Connection
      		Switch Condition
      		Specified Condition
      A-2 (EW) - B-5 (WR)
      		Washer Switch ON
      Rear Wiper Switch OFF
      		Below 1 Ω
      A-2 (EW) - B-5 (WR)
      A-2 (EW) - A-7 (+1R)
      		Washer Switch OFF
      Rear Wiper Switch OFF
      		10 kΩ or higher
      A-2 (EW) - A-7 (+1R)
      		Washer Switch OFF
      Rear Wiper Switch ON
      		Below 1 Ω
      A-2 (EW) - B-5 (WR)
      A-2 (EW) - A-7 (+1R)
      A-7 (+1R) - B-5 (WR)
      		Washer Switch ON
      Rear Wiper Switch 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 B-3 (+1) and the negative (-) voltmeter terminal to terminal A-2 (EW).

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

    3. Turn the wiper switch to the INT position.

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



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

      OK:
      Refer to the illustration below.



      E106356E33

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



  1. Check the front washer operation.

    1. Turn the wiper switch OFF.

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



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

      OK:
      Refer to the illustration below.



      E157493E03

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

  1. Check the rear wiper switch.

    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance:
      Rear Wiper Switch 
      Tester Connection
      		Switch Condition
      		Specified Condition
      A-2 (EW) - A-7 (+1R)
      		ON
      		Below 1 Ω
      A-2 (EW) - A-7 (+1R)
      		OFF
      		10 kΩ or higher

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

  1. Check the rear washer switch.

    1. Measure the resistance of the switch.

      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      A-2 (EW) - B-5 (WR)
      		ON
      		Below 1 Ω
      OFF
      		10 kΩ or higher

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