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Home >> Lexus >> 2017 >> ES 350 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System / Washer System (Diagnostics & Circuit Tests) >> Wiper And Washer System >> Circuit Tests >> Front Wiper Motor Circuit [07/2015 - ] >> Procedure

Front Wiper Motor Circuit [07/2015 - ]: Procedure

  1. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY 
    1. Remove the windshield wiper motor assembly (Refer to REMOVAL [07/2015 - ] ).
      GTY587477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the LO operation.
      1. Connect a battery positive (+) lead to terminal 5 (+1) and a negative (-) lead to terminal 4 (E), and check that the motor operates at low speed.

        OK

        Motor operates at low speed (LO).

    3. Check the HI operation.
      1. Connect a battery positive (+) lead to terminal 3 (+2) and a negative (-) lead to terminal 4 (E), and check that the motor operates at high speed.

        OK

        Motor operates at high speed (HI).

        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Windshield Wiper Motor Assembly)

    Result:  NG

    NG 

    REPLACE WINDSHIELD WIPER MOTOR ASSEMBLY 

    (Refer to REMOVAL [07/2015 - ] )

    Result:  OK

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER MOTOR ASSEMBLY - IG1 NO. 1 RELAY AND BODY GROUND) 
    1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A25-2 (B) - Body ground Engine switch on (IG) 11 to 14 V
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A25-4 (E) - Body ground Always Below 1 Ω

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER MOTOR ASSEMBLY - WINDSHIELD WIPER RELAY ASSEMBLY) 
    1. Disconnect the H51 windshield wiper relay assembly connector and H25 windshield wiper switch assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A25-1 (+S) - H51-1 (+SM) Always Below 1 Ω
      A25-1 (+S) - Body ground Always 10 kΩ or higher
      A25-3 (+2) - H51-11 (+2) Always Below 1 Ω
      A25-3 (+2) - H25-4 (+2) Always Below 1 Ω
      A25-3 (+2) - Body ground Always 10 kΩ or higher
      A25-5 (+1) - H25-3 (+1) Always Below 1 Ω
      A25-5 (+1) - Body ground Always 10 kΩ or higher

    Result:  OK

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    (Refer to PROBLEM SYMPTOMS TABLE [07/2015 - ] )

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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