WIPER AND WASHER SYSTEM Wiper and Washer Switch Circuit

DESCRIPTION

This circuit detects the state of the windshield wiper switch assembly (front wiper switch and front washer switch) and sends it to the windshield wiper relay assembly.

WIRING DIAGRAM

A003RTJE03

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY


    1. A003U6JE01
      Text in Illustration
      *1

      Component without harness connected

      (Windshield Wiper Switch Assembly)

      Remove the windshield wiper switch assembly Click here.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Front Wiper Switch
      Tester Connection Switch Condition Specified Condition
      E10-3 (+1) - E10-1 (+S) OFF Below 1 Ω
      E10-3 (+1) - E10-2 (+B) MIST
      LO
      E10-2 (+B) - E10-4 (+2) HI
      E10-9 (AUTO) - E10-10 (E) AUTO
      Front Washer Switch
      Tester Connection Switch Condition Specified Condition
      E9-2 (EW) - E9-3 (WF) ON Below 1 Ω
      OFF 10 kΩ or higher
      Adjusting Ring
      Tester Connection Condition Specified Condition
      E10-7 (VR1) - E10-8 (VR2) Adjusting ring changed from (+) side to (-) side 0 to 2.7 kΩ

    NG

    REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (WIPER SWITCH - WIPER RELAY AND BODY GROUND)


    1. Disconnect the E9 and E10 windshield wiper switch assembly connectors.

    2. Disconnect the E40 windshield wiper relay assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E10-2 (+B) - E40-12 (IG) Always Below 1 Ω
      E10-2 (+B) - Body ground Always 10 kΩ or higher
      E10-3 (+1) - E40-1 (+2S) Always Below 1 Ω
      E10-3 (+1) - Body ground Always 10 kΩ or higher
      E10-4 (+2) - E40-3 (+2) Always Below 1 Ω
      E10-4 (+2) - Body ground Always 10 kΩ or higher
      E10-1 (+S) - E40-11 (+SSW) Always Below 1 Ω
      E10-1 (+S) - Body ground Always 10 kΩ or higher
      E10-9 (AUTO) - E40-17 (C1) Always Below 1 Ω
      E10-9 (AUTO) - Body ground Always 10 kΩ or higher
      E10-10 (E) - E40-16 (CO) Always Below 1 Ω
      E10-10 (E) - Body ground Always 10 kΩ or higher
      E10-7 (VR1) - E40-7 (VR1) Always Below 1 Ω
      E10-7 (VR1) - Body ground Always 10 kΩ or higher
      E10-8 (VR2) - E40-6 (VR2) Always Below 1 Ω
      E10-8 (VR2) - Body ground Always 10 kΩ or higher
      E9-3 (WF) - E40-4 (W) Always Below 1 Ω
      E9-3 (WF) - Body ground Always 10 kΩ or higher
      E9-2 (EW) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here