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Wiper And Washer System: Inspection

  1. WINDSHIELD WIPER SWITCH ASSY 
    1. Continuity Check
      1. Check the continuity of each terminal of the connector.

        Standard: 

        FRONT WIPER SWITCH

        Switch position Tester connection Specified condition
        MIST 7(+1)-8(+B) Continuity
        OFF 6(+S)-7(+1) Continuity
        INT 6(+S)-7(+1) Continuity
        LO 7(+1)-8(+B) Continuity
        HI 8(+B)-9(+2) Continuity
        FRONT WASHER SWITCH

        Switch position Tester connection Specified condition
        OFF 4 (W) - 5 (EW) No continuity
        ON 4(W)-5(EW) Continuity
        Fig 1: Identifying Connector Terminal Windshield Wiper Switch Assy
        G02635522Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        REAR WIPER AND WASHER SWITCH

        Switch position Tester connection Specified condition
        WASH (Rear wiper switch OFF position side) 3(WR)-5(EW) Continuity
        OFF 1 (CIR)-5(EW) No continuity
        2 (+1R) - 5 (EW)
        3 (WR) - 5 (EW)
        INT 1 (CIR)-5(EW) Continuity
        ON 2(+1R)-5(EW) Continuity
        WASH (Rear wiper switch ON position side) 2(+1R)-5(EW) Continuity
        3(WR)-5(EW)
    2. w/o Intermittent time adjust:

      Intermittent Operation Check

      1. Connect the voltmeter (+) terminal to terminal 7 (+1) of the connector, the voltmeter (-) terminal to terminal 5 (EW) of the connector.
      2. Connect the battery (+) to terminal 8 (+B) of the connector, the battery (-) to terminal 5 (EW) and 6 (+S) of the connector.
      3. Turn the wiper switch to the INT position.
      4. Connect the battery (+) to terminal 6 (+S) of the connector for 5 seconds.
      5. Connect the battery (-) to terminal 6 (+S) of the connector. Operate the intermittent wiper relay and check voltage between terminal 7 (+1) and terminal 5 (EW).
        Fig 2: Measuring Voltage Cycle
        G02635523Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. w/ Intermittent time adjust:

      Intermittent Operation Check

      1. Connect the voltmeter (+) terminal to terminal 7 (+1) of the connector, the voltmeter (-) terminal to terminal 5 (EW) of the connector.
      2. Connect the battery (+) to terminal 8 (+B) of the connector, the battery (-) to terminal 5 (EW) and 6 (+S) of the connector.
      3. Turn the wiper switch to the INT position.
      4. Connect the battery (+) to terminal 6 (+S) of the connector for 5 seconds.
      5. Connect the battery (-) to terminal 6 (+S) of the connector. Operate the intermittent wiper relay and check voltage between terminal 7 (+1) and terminal 5 (EW).
        Fig 3: Measuring Voltage Cycle
        G02635524Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Front Washer Linked Operation Check
      1. Turn the wiper switch to the OFF position.
      2. Connect the battery (+) to terminal 8 (+B) of the connector, the battery (-) to terminal 6 (+S) and 5 (EW) of the connector.
      3. Connect the voltmeter (+) terminal to terminal 7 (+1) of the connector, the voltmeter (-) terminal to terminal 5 (EW) of the connector. Turn the washer switch to ON and OFF and check voltage between terminal 7 (+1) and terminal 5 (EW).
        Fig 4: Checking Voltage Cycle
        G02635525Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. WINDSHIELD WIPER MOTOR ASSY 
    1. LO Operation Check
      1. Connect the battery (+) to terminal 1 (+1) of the connector, the battery (-) to terminal 5 (E) of the connector, and check that the motor operates at low speed (LO).
    2. HI Operation Check
      1. Connect the battery (+) to terminal 4 (+2) of the connector, the battery (-) to terminal 5 (E) of the connector, and check that the motor operates at high speed (HI).
    3. Automatic Stop Operation Check
      1. Connect the battery (+) to terminal 1 (+1) of the connector, the battery (-) to terminal 5 (E) of the connector. With the motor being rotated at low speed (LO), disconnect terminal 1 (+1) to stop the wiper motor operation at any position except the automatic stop position.
      2. Using SST, connect terminal 1 (+1) and 3 (S), and the battery (+) to terminal 2 (B) to restart the motor operation at low speed (LO).

        SST 09843-18040

        Fig 5: Identifying Connector Terminal Windshield Wiper Motor Assy
        G02635526Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Check the automatic stop position.

        OK: See the illustration. 

        Fig 6: Checking Automatic Stop Position
        G02635527Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REAR WIPER MOTOR ASSY 
    1. Operation Check
      1. Connect the battery (+) to terminal 4 (+1) of the connector, the battery (-) to terminal 1 (-) of the connector, and check that the rear wiper motor operates.
    2. Automatic Stop Position Operation Check
      1. Connect the battery (+) to terminal 2 (+B) of the connector, the battery (-) to terminal 3 (S) of the connector. With the motor being rotated, disconnect terminal 4 (+1) to stop the motor operation at any position except the automatic stop position.
        Fig 7: Identifying Connector Terminal Rear Wiper Motor Assy
        G02635528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Connect the battery (+) to terminal 2 (+B) to restart the motor operation, then check that the wiper arm blade stops automatically at a certain position. (See REAR WIPER MOTOR ASSY )
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