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Home >> Lexus >> 2011 >> ES 350 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System (Diagnostics & Circuit Tests) >> Wiper And Washer System >> Circuit Tests >> Power Source Circuit >> Procedure

Power Source Circuit: Procedure

  1. INSPECT FUSE (WIP) 
    1. Remove the WIP fuse from the instrument panel J/B.
    2. Measure the resistance of the fuse.

      Standard resistance

      Below 1 Ω

    NG → REPLACE FUSE 

    OK: Go to next step 

  2. INSPECT IG1 RELAY 
    1. Remove the IG1 relay from the instrument panel J/B.
      Fig 1: Inspecting IG1 Relay
      GTY118482Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance of the relay.

      Standard resistance

      Tester Connection Condition Specified Condition
      3 - 5 Always 10 kΩ or higher
      When battery voltage is applied to terminals 1 and 2 Below 1 Ω

    NG → REPLACE IG1 RELAY 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (WIPER RELAY - BATTERY, BODY GROUND) 
    1. Disconnect the E11 windshield wiper relay assembly (auto wiper relay) connector.
      Fig 2: Identifying E11 Windshield Wiper Relay Assembly Connector Terminal (Auto Wiper Relay)
      GTY119167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      E11-12 (IG) - Body ground Engine switch on (IG) 10 to 14 V
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      E11-26 (E) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE