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Section 45 (Wiper And Washer System): Inspection

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  1. INSPECT FRONT WIPER AND WASHER SWITCH CONTINUITY 
    TESTER CONNECTION SPECIFIED CONDITION

    Switch position Tester connection Specified condition
    OFF 7 - 16 Continuity
    AUTO 7 - 16, 4 - 14 Continuity
    LO 7 - 17 Continuity
    HI 8 - 17 Continuity
    Washer OFF - No continuity
    Washer ON 2 - 11 Continuity

    If continuity is not as specified, replace the switch.

    Fig 1: Inspecting Front Wiper And Washer Switch
    G02994157Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FRONT WIPER AND WASHER SWITCH CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown.

    Fig 2: Identifying Front Wiper And Washer Switch Connector Terminals
    G02994158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFIED CONDITION

    Tester connection Condition Specified condition
    2 - Ground Always Continuity
    11 - Ground Ignition switch LOCK or ACC No voltage
    11 - Ground Ignition switch ON Battery positive voltage

    If circuit is not as specified, inspect the circuits connected to other parts.

  3. INSPECT FRONT WIPER INTERMITTENT OPERATION 
    1. Turn the wiper switch to INT position.
    2. Turn the intermittent time control switch to FAST position.
    3. Connect the battery positive (+) lead to terminal 16 and the battery negative (-) lead to terminal 2.
    4. Connect the voltmeter positive (+) lead to terminal 7 and the voltmeter negative (-) lead to terminal 2, and check that the meter needle indicates battery voltage.
      Fig 3: Inspecting Front Wiper Intermittent Operation
      G02994159Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. After connecting terminal 16 to terminal 17, connect to terminal 2 to terminal 17, check the voltage rises from 0 volts to battery voltage within the times as shown in the table. 
    Fig 4: Voltage Specifications
    G02994160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 5: Inspecting Front Wiper Intermittent Operation
    G02994161Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  4. INSPECT REAR WIPER AND WASHER SWITCH CONTINUITY 
    TESTER CONNECTION SPECIFIED CONDITION

    Switch position Tester connection Specified condition
    Washer 1 2 - 12 Continuity
    OFF - No Continuity
    INT 2 - 13 Continuity
    ON 2 - 10 Continuity
    Washer 2 2-10-12 Continuity

    If continuity is not as specified, replace the switch.

    Fig 6: Inspecting Rear Wiper And Washer Switch
    G02994162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT REAR WIPER AND WASHER SWITCH CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown.

    Fig 7: Identifying Rear Wiper And Washer Switch Connector Terminals
    G02994163Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFIED CONDITION

    Tester connection Condition Specified condition
    2 - Ground Always Continuity
    12 - Ground Ignition switch ON Battery positive voltage

    If circuit is not as specified, inspect the circuits connected to other parts.

  6. Low Speed: 

    INSPECT FRONT WIPER MOTOR OPERATION 

    Connect the battery positive (+) lead to terminal 1 and the battery negative (-) lead to terminal 5, and check that the motor operates at low speed.

    If operation is not as specified, replace the motor.

    Fig 8: Inspecting Front Wiper Motor Operation - Low Speed
    G02994164Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. High Speed: 

    INSPECT FRONT WIPER MOTOR OPERATION 

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

    If operation is not as specified, replace the motor.

    Fig 9: Inspecting Front Wiper Motor Operation - High Speed
    G02994165Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. 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 battery positive (+) lead from terminal 1.
      Fig 10: Inspecting Front Wiper Motor Operation - Stopping At Stop Position (1 Of 2)
      G02994166Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect terminals 1 and 3.
    3. Connect the battery positive (+) lead to terminal 2 and the battery negative (-) lead to terminal 5, and check that the motor stops running at the stop position after the motor operates again.

    If operation is not as specified, replace the motor.

    Fig 11: Inspecting Front Wiper Motor Operation - Stopping At Stop Position (2 Of 2)
    G02994167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. Connector disconnected: 

    INSPECT FRONT WIPER MOTOR CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown.

    Fig 12: Identifying Front Wiper Motor Connector Terminals
    G02994168Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFIED CONDITION

    Tester connection Condition Specified condition
    5 - Ground Always Continuity
    2 - Ground Ignition switch LOCK or ACC No voltage
    2 - Ground Ignition switch ON Battery positive voltage

    If circuit is not as specified, inspect the circuits connected to other parts.

  10. Low Speed: 

    INSPECT REAR WIPER MOTOR OPERATION 

    Connect the battery positive (+) lead to terminal 3 and the battery negative (-) lead to terminal 2, and check that the motor operates at low speed.

    If operation is not as specified, replace the motor.

    Fig 13: Inspecting Rear Wiper Motor Operation - Low Speed
    G02994169Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. Stopping at Stop Position: 

    INSPECT REAR WIPER MOTOR OPERATION 

    1. Operate the motor at low speed and stop the motor operation anywhere except at the stop position by disconnecting positive (+) lead from terminal 3.
      Fig 14: Inspecting Rear Wiper Motor Operation - Stopping At Stop Position (1 Of 2)
      G02994170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect terminals 3 and 4.
    3. Connect the battery positive (+) lead to terminal 1 and the battery negative (-) lead to terminal 2, and check that the motor stops running at the stop position after the motor operates again.

    If operation is not as specified, replace the motor.

    Fig 15: Inspecting Rear Wiper Motor Operation - Stopping At Stop Position (2 Of 2)
    G02994171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. Connector disconnected: 

    INSPECT REAR WIPER MOTOR CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown.

    Fig 16: Identifying Rear Wiper Motor Connector Terminals
    G02994172Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFIED CONDITION

    Tester connection Condition Specified condition
    1 - Ground Ignition switch OFF or ACC No voltage
    1 - Ground Ignition switch ON Battery positive voltage
    2 - Ground Always Continuity
    3 - 4 Always Continuity

    If circuit is not as specified, inspect the circuits connected to other parts.

  13. INSPECT FRONT WASHER MOTOR OPERATION 

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

    NOTE: These tests must be performed quickly (within 20 seconds) to prevent the coil from burning out.

    If operation is not as specified, replace the motor.

    Fig 17: Inspecting Front Washer Motor Operation
    G02994173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. Connector disconnected: 

    INSPECT FRONT WASHER MOTOR CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown.

    Fig 18: Identifying Front Washer Motor Connector Terminals
    G02994174Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFIED CONDITION

    Tester connection Condition Specified condition
    2 - Ground Ignition switch ON Battery positive voltage

    If circuit is not as specified, inspect the power source and wire harness.

  15. INSPECT REAR WASHER MOTOR OPERATION 

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

    NOTE: These tests must be performed quickly (within 20 seconds) to prevent the coil from burning out.

    If operation is not as specified, replace the motor.

    Fig 19: Inspecting Rear Washer Motor Operation
    G02994175Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. Connector disconnected: 

    INSPECT REAR WASHER MOTOR CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown.

    Fig 20: Identifying Rear Washer Motor Connector Terminals
    G02994176Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TESTER CONNECTION SPECIFIED CONDITION

    Tester connection Condition Specified condition
    2 - Ground Ignition switch ON Battery positive voltage

    If circuit is not as specified, inspect the power source, the wire harness and the wiper switch.

  17. INSPECT REAR WIPER RELAY OPERATION (See  PROBLEM SYMPTOMS TABLE  ) 
  18. INSPECT REAR WIPER RELAY INTERMITTENT OPERATION (See  PROBLEM SYMPTOMS TABLE  ) 
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