Wiper And Washer System: Inspection

Fig 1: Checking Of Each Terminal Of Connector

WINDSHIELD WIPER SWITCH ASSY
1. Continuity Check
  1. Check the continuity of each terminal of the connector.
  Standard:
  
  Front Wiper Switch
  
  Fig 2: Front Wiper Switch Continuity Check Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Front Washer Switch
  
  Fig 3: Front Washer Switch Continuity Check Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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 4: Checking Operation w/o Intermittent Time Adjust
  Courtesy 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 5: Checking Operation w/Intermittent Time Adjust
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Operation Check (Front Wiper)
  
  Fig 6: Operation Checking (Front Wiper)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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).
WINDSHIELD WIPER MOTOR ASSY

Fig 7: Windshield Wiper Motor Assy LO & HI Operation Check
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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
  3. Check the automatic stop position.
    
    Fig 8: Checking Automatic Stop Position
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Standard: See Fig 8
REAR WIPER MOTOR ASSY

Fig 9: Checking Rear Wiper Motor Assy Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.
  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 )