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Wiper And Washer System: Inspection

WARNING: This page is about a different car, the 2004 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
  1. WINDSHIELD WIPER SWITCH ASSY 
    Fig 1: Identifying Windshield Wiper Switch Connector Terminals
    G00932853Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance according to the value(s) in the table below.

      Standard: 

      Front Wiper Switch 

      Fig 2: Front Wiper Switch Resistance Check Table
      G00932854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Rear Wiper Switch (w/ Rear Wiper) 

      Fig 3: Rear Wiper Switch (W/ Rear Wiper) Resistance Check Table
      G00932855Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Front Washer Switch 

      Fig 4: Front Washer Switch Resistance Check Table
      G00932856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Rear Washer Switch (w/ Rear Wiper) 

      Fig 5: Identifying Rear Washer Switch (W/ Rear Wiper)
      G00932857Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 6: Rear Washer Switch (W/ Rear Wiper) Resistance Check Table
      G00932858Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Intermittent Operation Check
      1. Connect the voltmeter (+) terminal to terminal C9-3 (+1) of the connector and the voltmeter (-) terminal to terminal C10-2 (EW).
      2. Connect the positive battery (+) lead to terminal C9-2 (+B) of the connector and the negative battery (-) lead to terminals C10-2 (EW) and C9-1 (+S).
      3. Turn the wiper switch to the INT position.
      4. Connect the positive battery (+) lead to terminal C9-1 (+S) of the connector for 5 seconds.
      5. Connect the negative battery (-) lead to terminal C9-1 (+S) of the connector. Operate the intermittent wiper relay and measure the voltage between terminals C9-3 (+1) and C10-2 (EW)
        1. Standard: Refer to the illustration below. 
        Fig 7: Blinking Pattern
        G00932859Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Front Washer Operation Check
      1. Turn the wiper switch to the OFF position.
      2. Connect the positive battery (+) lead to terminal C9-2 (+B) of the connector, the negative battery (-) lead to terminals C9-1 (+S) and the terminal C10-2(EW).
      3. Connect the voltmeter (+) terminal to terminal C9-3 (+1) of the connector and the voltmeter (-) terminal to terminal C10-2 (EW).
      4. Turn the washer switch to the ON and OFF positions, and measure the voltage between terminals C9-3 (+1) and C10-2 (EW).
        1. Standard: Refer to the illustration Below 
      Fig 8: Blinking Pattern (Front Washer Operation)
      G00932860Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. WINDSHIELD WIPER MOTOR ASSY 
    1. LO Operation Check
      1. Connect the positive battery (+) lead to terminal 1 (+1) of the connector, and the negative battery (-) lead to terminal 5 (E), and check that the windshield wiper motor assy operates at low speed (LO).
        1. Standard: The motor operates at low speed (LO). 
      Fig 9: Identifying Windshield Wiper Motor Connector Terminals
      G00932861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. HI Operation Check
      1. Connect the positive battery (+) lead to terminal 4 (+2) of the connector, and the negative battery (-) lead to terminal 5 (E), and check that the windshield wiper motor assy operates at high speed (HI).
        1. Standard: The motor operates at high speed (HI). 
  3. REAR WIPER MOTOR ASSY 
    1. Operation Check
      1. Connect the positive battery (+) lead to terminal 3 (+1), and the negative battery (-) lead to terminal 2 (-), and check that the rear wiper motor operates.
        1. Standard: The rear wiper motor operates. 
      Fig 10: Identifying Rear Wiper Motor Connector Terminals
      G00932862Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. WINDSHIELD WIPER RELAY ASSY 
    1. Operation Check
      1. Using a voltmeter, connect the voltmeter (+) terminal to terminal 4 (LM) of the connector, and the voltmeter (-) terminal to terminal 6 (LS).
      2. Connect the positive battery (+) lead to terminal 3 (+B) of the connector, and the negative battery (-) lead to terminal 6 (LS). Measure the voltage between terminals 4 (LM) and 6 (LS).
        1. Standard: 10 to 14 V 
      Fig 11: Identifying Windshield Wiper Relay Connector Terminals
      G00932863Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Intermittent Operation Check
      1. Using a voltmeter, connect the voltmeter (+) terminal to terminal 4 (LM) of the connector, and the voltmeter (-) terminal to terminal 2 (C1).
      2. Connect the positive battery (+) lead to terminal 3 (+B) of the connector, and the negative battery (-) lead to terminal 2 (C1). (Wiper switch is in the INT position.)
      3. Connect the positive battery (+) lead to terminal 5 (SM) of the connector for approximately 5 seconds.
      4. Connect the negative battery (-) lead to terminal 5 (SM) of the connector. Measure the voltage between terminals 4 (LM) and 2 (C1) when operating the intermittent wiper relay.
        1. Standard: Refer to the illustration below. 
      Fig 12: Blinking Pattern (Intermittent Operation)
      G00932864Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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