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Section 1006 (Wiper & Washer System): Inspection

WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT FRONT WIPER AND WASHER SWITCH CONTINUITY 
    Fig 1: Identifying Wiper & Washer Switch Terminals
    G03494284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    FRONT WIPER AND WASHER SWITCH TERMINALS CONTINUITY

    Switch position Tester connection Specified condition
    OFF 7-16 Continuity
    INT 7-16 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.

  2. INSPECT REAR WIPER AND WASHER SWITCH CONTINUITY 
    REAR WIPER AND WASHER SWITCH TERMINALS CONTINUITY

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

    If continuity is not as specified, replace the switch.

  3. Connector disconnected: 

    INSPECT WIPER AND WASHER SWITCH CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown in Fig 2 .

    Fig 2: Inspecting Wiper & Washer Switch Circuit
    G03494285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WIPER AND WASHER SWITCH CONNECTOR TERMINALS SPECIFIED CONDITION

    Tester connection Condition Specified condition
    2 - Ground Always Continuity
    17 - Ground Ignition switch LOCK or ACC No voltage
    17 - Ground Ignition switch ON Battery Positive Voltage

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

  4. Low speed: 

    INSPECT FRONT WIPER MOTOR OPERATION 

    Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 5, check that the motor operates at low speed. If operation is not as specified, replace the motor.

    Fig 3: Inspecting Front Wiper Motor Operation
    G03494286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. High speed: 

    INSPECT FRONT WIPER MOTOR OPERATION 

    Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 5, check that the motor operates at high speed. If operation is not as specified, replace the motor.

  6. 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 positive (+) lead from terminal 1.
    2. Connect terminals 1 and 3.
    3. Connect the positive (+) lead from the battery to terminal 2 and negative (-) lead to terminal 5, 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 4: Inspecting Front Wiper Motor Operation
    G03494287Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. Connector disconnected: 

    INSPECT FRONT WIPER MOTOR CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown in Fig 5 .

    Fig 5: Inspecting Front Wiper Motor Circuit
    G03494288Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    FRONT WIPER MOTOR CONNECTOR TERMINALS SPECIFIED CONDITION

    Tester connection Condition Specified condition
    4 - 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.

  8. INSPECT REAR WIPER MOTOR OPERATION 
    1. Connect the positive (+) lead from the battery to terminal 3 and negative (-) lead to terminal 1 and the motor body, check that the motor operates.
      Fig 6: Connecting Battery To Terminals 3 & 1
      G03494289Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the negative (-) lead from terminal 1, check that the motor stops running at the stop position.

      If operation is not as specified, replace the motor.

      Fig 7: Disconnecting Battery From Terminal 1
      G03494290Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. Intermittent: 

    INSPECT REAR WIPER MOTOR OPERATION 

    Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2 and the motor body, check that the motor operates intermittently for 9-15 seconds. If operation is not as specified, replace the motor.

    Fig 8: Inspecting Rear Wiper Motor Operation
    G03494291Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. Connector disconnected: 

    INSPECT REAR WIPER MOTOR CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown in Fig 9 .

    Fig 9: Inspecting Rear Wiper Motor Circuit
    G03494292Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    REAR WIPER MOTOR CONNECTOR TERMINALS SPECIFIED CONDITION

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

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

  11. Sedan: 

    INSPECT WASHER MOTOR OPERATION 

    Connect the positive (+) lead from the battery to terminal 2 and the 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 10: Inspecting Washer Motor Operation (Sedan)
    G03494293Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. Sedan, Connector disconnected: 

    INSPECT FRONT WASHER MOTOR CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown in Fig 11 .

    Fig 11: Inspecting Front Washer Motor Circuit (Sedan)
    G03494294Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    FRONT WASHER MOTOR CONNECTOR TERMINALS VOLTAGE

    Tester connection Condition Specified condition
    2 - Ground Ignition switch ON Battery Positive Voltage

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

  13. Wagon: 

    INSPECT FRONT WASHER MOTOR OPERATION 

    Connect the positive (+) lead from the battery to terminal 2 and the 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 12: Inspecting Front Washer Motor Operation (Wagon)
    G03494295Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. INSPECT REAR WASHER MOTOR OPERATION 

    Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 3, 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 13: Inspecting Rear Washer Motor Operation
    G03494296Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. Wagon, Connector disconnected: 

    INSPECT WASHER MOTOR CIRCUIT 

    Disconnect the connector from the motor and inspect the connector on the wire harness side, as shown in Fig 14 .

    Fig 14: Inspecting Washer Motor Circuit
    G03494297Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WASHER MOTOR CONNECTOR TERMINALS VOLTAGE

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

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

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