WIPER SWITCH INSPECTION


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


    1. A003U6JE02
      Text in Illustration
      *1

      Component without harness connected

      (Windshield Wiper Switch Assembly)

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

      Standard Resistance
      Front Wiper Switch
      Tester Connection Switch Condition Specified Condition
      E10-1 (+S) - E10-3 (+1) OFF Below 1 Ω
      INT
      E10-2 (+B) - E10-3 (+1) MIST
      LO
      E10-2 (+B) - E10-4 (+2) HI
      Front Washer Switch
      Tester Connection Switch Condition Specified Condition
      E9-2 (EW) - E9-3 (WF) ON Below 1 Ω
      OFF 10 kΩ or higher
      Rear Wiper Switch
      Tester Connection Switch Condition Specified Condition
      E9-6 (C1R) - E9-2 (EW) OFF 10 kΩ or higher
      E9-7 (+1R) - E9-2 (EW)
      E9-6 (C1R) - E9-2 (EW) INT Below 1 Ω
      E9-7 (+1R) - E9-2 (EW) HI Below 1 Ω
      Rear Washer Switch
      Tester Connection Switch Condition Specified Condition
      E10-5 (WR) - E9-2 (EW) OFF 10 kΩ or higher
      E9-7 (+1R) - E9-2 (EW)
      E10-5 (WR) - E9-2 (EW) WASH Below 1 Ω
      E10-5 (WR) - E9-2 (EW) ON + WASH Below 1 Ω
      E9-7 (+1R) - E9-2 (EW)

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

    2. Check the intermittent operation.


      1. Connect a voltmeter positive (+) lead to terminal E10-3 (+1) and a negative (-) lead to terminal E9-2 (EW).

      2. Connect a battery positive (+) lead to terminal E10-2 (+B) and a negative (-) lead to terminal E9-2 (EW) and E10-1 (+S).

      3. Turn the wiper switch to the INT position.

      4. Connect a battery positive (+) lead to terminal E10-1 (+S) for 5 seconds.

      5. Connect a battery negative (-) lead to terminal E10-1 (+S). Operate the intermittent wiper relay and check the voltage between terminals E10-3 (+1) and E9-2 (EW).

        OK
        Voltage changes as shown in the illustration.
        A003UAUE54

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

        Text in Illustration
        *1 Voltage between terminals E10-3 (+1) and E10-2 (EW) *2 FAST: Connect battery negative lead to terminal E10-1 (+S)
        *3 SLOW: Connect battery negative lead to terminal E10-1 (+S) - -

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


    1. A003U6JE01
      Text in Illustration
      *1

      Component without harness connected

      (Windshield Wiper Switch Assembly)

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

      Standard Resistance
      Front Wiper Switch
      Tester Connection Switch Condition Specified Condition
      E10-1 (+S) - E10-3 (+1) OFF Below 1 Ω
      AUTO
      E10-2 (+B) - E10-3 (+1) MIST
      LO
      E10-2 (+B) - E10-4 (+2) HI
      E10-9 (AUTO) - E10-10 (E) AUTO Below 1 Ω
      Adjusting Ring
      Tester Connection Switch Condition Specified Condition
      E10-7 (VR1) - E10-8 (VR2) Adjusting ring changed from (+) side to (-) side 0 to 2.7 kΩ
      Front Washer Switch
      Tester Connection Switch Condition Specified Condition
      E9-2 (EW) - E9-3 (WF) ON Below 1 Ω
      OFF 10 kΩ or higher
      Rear Wiper Switch
      Tester Connection Switch Condition Specified Condition
      E9-6 (C1R) - E9-2 (EW) OFF 10 kΩ or higher
      E9-7 (+1R) - E9-2 (EW)
      E9-6 (C1R) - E9-2 (EW) INT Below 1 Ω
      E9-7 (+1R) - E9-2 (EW) HI Below 1 Ω
      Rear Washer Switch
      Tester Connection Switch Condition Specified Condition
      E10-5 (WR) - E9-2 (EW) OFF 10 kΩ or higher
      E9-7 (+1R) - E9-2 (EW)
      E10-5 (WR) - E9-2 (EW) WASH Below 1 Ω
      E10-5 (WR) - E9-2 (EW) ON + WASH Below 1 Ω
      E9-7 (+1R) - E9-2 (EW)

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