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

A00Y6NNE01

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY


    1. A00Y8RGC01
      *1 Windshield Wiper Switch Assembly (Adjusting Ring Position)
      *a

      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 Condition Specified Condition
      E10-2 (+B) - E10-3 (+1) MIST Below 1 Ω
      E10-3 (+1) - E10-1 (+S) OFF
      E10-3 (+1) - E10-1 (+S) AUTO
      E10-8 (AUTO) - E10-9 (E)
      E10-2 (+B) - E10-3 (+1) LO
      E10-2 (+B) - E10-4 (+2) HI
      Rear Wiper Switch (w/ Rear Wiper)
      Tester Connection Condition Specified Condition
      E9-2 (C1R) - E9-4 (EW) OFF 10 kΩ or higher
      E9-3 (+1R) - E9-4 (EW)
      E9-2 (C1R) - E9-4 (EW) INT Below 1 Ω
      E9-3 (+1R) - E9-4 (EW) ON
      Front Washer Switch
      Tester Connection Condition Specified Condition
      E9-4 (EW) - E9-7 (WF) ON Below 1 Ω
      E10-5 (WR) - E10-10 (+B2)
      E9-4 (EW) - E9-7 (WF) OFF 10 kΩ or higher
      E10-5 (WR) - E10-10 (+B2)
      Rear Washer Switch (w/ Rear Wiper)
      Tester Connection Condition Specified Condition
      E9-4 (EW) - E10-5 (WR) ON Below 1 Ω
      E9-7 (WF) - E10-10 (+B2)
      E9-4 (EW) - E10-5 (WR) OFF 10 kΩ or higher
      E9-7 (WF) - E10-10 (+B2)
      Adjusting Ring*
      Tester Connection Condition Specified Condition
      E10-6 (VR2) - E10-7 (VR1) P1 209 to 231 Ω
      P2 114 to 126 Ω
      P3 58.9 to 65.1 Ω
      P4 Below 1 Ω

      Tech Tips

      *: The rain sensor sensitivity can be adjusted by the windshield wiper switch assembly adjusting ring.

      Result
      Proceed to
      OK
      NG

    NG
    OK
  2. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - WINDSHIELD WIPER RELAY ASSEMBLY AND BODY GROUND)


    1. Disconnect the E95 windshield wiper relay assembly connector.

    2. Disconnect the A11 windshield wiper motor assembly connector.

    3. Disconnect the A17 windshield washer motor and pump assembly connector.

    4. Disconnect the 3D instrument panel junction block assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E9-4 (EW) - Body ground Always Below 1 Ω
      E9-7 (WF) - E95-4 (W) - A17-2 Always Below 1 Ω
      E9-7 (WF) - Body ground Always 10 kΩ or higher
      E10-1 (+S) - E95-10 (+1) Always Below 1 Ω
      E10-1 (+S) - Body ground Always 10 kΩ or higher
      E10-2 (+B) - 3D-3 Always Below 1 Ω
      E10-2 (+B) - Body ground Always 10 kΩ or higher

      E10-3 (+1) - A11-5 (+1)

      *1

      Always Below 1 Ω

      E10-3 (+1) - A11-1 (+1)

      *2

      Always Below 1 Ω
      E10-3 (+1) - Body ground Always 10 kΩ or higher

      E10-4 (+2) - E95-11 (+2) - A11-3 (+2) - 3D-7

      *1

      Always Below 1 Ω

      E10-4 (+2) - E95-11 (+2) - A11-4 (+2) - 3D-7

      *2

      Always Below 1 Ω
      E10-4 (+2) - Body ground Always 10 kΩ or higher
      E10-6 (VR2) - E95-8 (VR2) Always Below 1 Ω
      E10-6 (VR2) - Body ground Always 10 kΩ or higher
      E10-7 (VR1) - E95-21 (VR1) Always Below 1 Ω
      E10-7 (VR1) - Body ground Always 10 kΩ or higher
      E10-8 (AUTO) - E95-3 (C1) Always Below 1 Ω
      E10-8 (AUTO) - Body ground Always 10 kΩ or higher
      E10-9 (E) - E95-5 (CO) Always Below 1 Ω
      E10-9 (E) - Body ground Always 10 kΩ or higher

      • *1: for LHD

      • *2: for RHD

      Result
      Proceed to
      OK
      NG

    OK
    NG