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Wiper And Washer System: Inspection

  1. Inspect front wiper and washer switch continuity  .
    Fig 1: Identifying Front Wiper And Washer Switch Positions & Locating Terminals
    G01908825Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Front Wiper And Washer Switch Continuity Chart (W/ Mist)
    G01908823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 3: Front Wiper And Washer Switch Continuity Chart (W/ Intermittent)
    G01908824Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the continuity is not as specified, replace the switch.

  2. Inspect intermittent operation  :
    1. Turn the wiper switch to INT position.
    2. Turn the intermittent time control switch to FAST position.
    3. Connect the positive (+) lead from the battery to terminal 16 and the negative (-) lead to terminal 2.
    4. Connect the positive (+) lead from the voltmeter to terminal 7 and the negative (-) lead to terminal 2, then check that the meter needle indicates battery positive voltage.
      Fig 4: Locating Intermittent Connector Terminals & Testing Operation
      G01908827Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 5: Intermittent Specifications Chart
      G01908826Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the operation is not as specified, replace the wiper and washer switch.

  3. Inspect rear wiper and washer switch continuity  :
    Fig 6: Rear Wiper And Washer Switch Specifications Chart
    G01908828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the continuity is not as specified, replace the switch.

    Fig 7: Identifying Rear Wiper & Washer Switch Positions & Locating Terminals
    G01908829Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Inspect washer linked operation  :
    1. Connect the positive (+) lead from the battery to terminal 16, and the negative (-) lead to terminal 2.
      Fig 8: Locating & Testing Washer Connector Terminals
      G01908831Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the positive (+) lead from the voltmeter to terminal 7, and the negative (-) lead to terminal 2.
    3. Push the washer switch, and check that the voltage changes as shown in the chart.
      Fig 9: Charting Washer Operation
      G01908830Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the operation is not as specified, replace the wiper and washer switch.

  5. Low Speed, inspect front wiper motor operation  :

    Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead from the battery to the motor body, and check that the motor operates at low speed.

    Fig 10: Testing Front Wiper Motor Low Speed
    G01908832Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the operation is not as specified, replace the motor.

  6. High Speed, inspect front wiper motor operation  :

    Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead from the battery to the motor body, and check that the motor operates at high speed.

    Fig 11: Testing Front Wiper Motor High Speed
    G01908833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the operation is not as specified, replace the motor.

  7. Stopping at Stop Position, inspect front wiper motor operation  :
    1. Operate the motor at low speed and stop the motor operation anywhere except at the stop position by disconnecting the positive (+) lead from terminal 2.
      Fig 12: Testing Front Wiper Motor Operation (1 Of 2)
      G01908834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect terminals 2 and 3.
    3. Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead from the battery to the motor body, and check that the motor stops running at the stop position after the motor has operated again.

      If the operation is not as specified, replace the motor.

      Fig 13: Testing Front Wiper Motor Operation (2 Of 2)
      G01908835Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. Inspect rear wiper motor operation  :
    1. Connect the positive (+) lead from the battery to terminal 1, and the negative (-) lead to terminal 3, then check that the motor turns clockwise.
      Fig 14: Testing Rear Wiper Motor Operation (1 Of 2)
      G01908836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Reverse the polarity, and check that the motor turns counterclockwise.
      Fig 15: Testing Rear Wiper Motor Operation (2 Of 2)
      G01908837Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the operation is not as specified, replace the motor.

  9. Inspect rear wiper motor continuity  :

    Connect the positive (+) lead from the battery to terminal 3, and the negative (-) lead to terminal 1, then inspect the continuity between terminals.

    Fig 16: Identifying Rear Wiper Motor Connector Terminals & Testing Rear Wiper Motor
    G01908839Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 17: Rear Wiper Motor Specifications Chart
    G01908838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the continuity is not as specified, replace the motor.

    10. CAUTION: These tests must be performed quickly (within 20 seconds) to prevent the coil from burning out.
    Fig 18: Testing Front Washer Motor Operation (W/O DRL)
    G01908840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. W/O Daytime Running Light (DRL), inspect front washer motor operation  :

    Connect the positive (+) lead from the battery to terminal 1, and the negative (-) lead to terminal 2, then check that the motor operates.

    11. CAUTION: These tests must be performed quickly (within 20 seconds) to prevent the coil from burning out.
    Fig 19: Testing Front Washer Motor Operation (W/ DRL)
    G01908841Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. W/ Daytime Running Light: INSPECT FRONT WASHER MOTOR OPERATION 

    Connect the positive (+) lead from the battery to terminal 2, and the negative (-) lead to terminal 1, then check that the motor operates.

    12. CAUTION: These tests must be performed quickly (within 20 seconds) to prevent the coil from burning out.
    Fig 20: Testing Rear Washer Motor Operation (W/O DRL)
    G01908842Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. W/O Daytime Running Light, inspect rear washer motor operation  :

    Connect the positive (+) lead from the battery to terminal 3, and the negative (-) lead to terminal 4, then check that the motor operates.

    13. CAUTION: These tests must be performed quickly (within 20 seconds) to prevent the coil from burning out.
    Fig 21: Testing Rear Washer Motor Operation (W/ DRL)
    G01908843Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. W/ Daytime Running Light, inspect rear washer motor operation  :

    Connect the positive (+) lead from the battery to terminal 5, and the negative (-) lead to terminal 4, then check that the motor operates.

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