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Wiper And Washer System: Inspection

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. WINDSHIELD WIPER MOTOR ASSY 
    1. LO Operation Check
      1. Connect the positive battery (+) lead to terminal 3 (+1) of the connector, and the negative battery (-) lead to terminal 1 (E), and check that the motor operates at low speed (LO).
    2. HI Operation Check
      1. Connect the positive battery (+) lead to terminal 2 (+2) of the connector, and the negative battery (-) lead to terminal 1 (E), and check that the motor operates at high speed (HI).
        Fig 1: Identifying Windshield Wiper Motor Assy Connector Terminals
        G03525203Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Automatic Stop Operation Check
      1. Put matchmarks on the windshield wiper motor assy.
      2. Connect the positive battery (+) lead to terminal 3 (+1) of the connector, and the negative battery (-) lead to terminal 1 (E). With the motor operating at low speed (LO), disconnect terminal 3 (+1) to stop wiper motor operation at any position other than the matchmarks.
      3. Using SST, connect terminals 3 (+1) and 5 (S), and the positive battery (+) lead to terminal 6 (B) to restart motor operation at low speed.

        SST 09843-18040

      4. Align the matchmarks with the windshield wiper motor assy.
        Fig 2: Putting Matchmarks On Windshield Wiper Motor Assy
        G03525204Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. TRACTION CONTROL SWITCH 
    1. Inspect the headlamp cleaner switch on the traction control switch.
      1. Measure the resistance according to the value(s) in the table below.

        Standard: 

        CONDITION SPECIFICATION

        Tester condition Condition Specified condition
        10 - 11 OFF 10 kΩ or higher
        10 - 11 ON Below 1 Ω
      2. Inspect illumination operation.

        Connect the positive (+) lead from the battery to terminal 20 and the negative (-) lead to terminal 5, then check that the illumination comes on.

        Fig 3: Identifying Traction Control Switch Connector Terminals
        G03525205Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. HEADLAMP CLEANER CONTROL RELAY 
    1. Inspect headlamp cleaner control relay operation.
      1. Check that no continuity exists between terminals 2 and 5.
      2. Connect the positive (+) lead of the battery to terminal 1, and the negative (-) lead of the battery to terminal 5.
      3. Connect the negative (-) lead of the battery to terminals 3 and 4, and check that continuity exists between terminals 2 and 5 for 0.8 to 0.9 seconds, then no continuity exists.
      4. Disconnect the positive (+) lead of the battery from terminal 1, and then reconnect.
        Fig 4: Checking Continuity Exists Between Terminals 2 And 5 (1 Of 2)
        G03525206Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Connect the negative (-) lead of the battery to terminals 3 and 6, and check that continuity exists between terminals 2 and 5 for 0.8 to 0.9 seconds. No continuity should then exist.
        Fig 5: Checking Continuity Exists Between Terminals 2 And 5 (1 Of 2)
        G03525207Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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