WIPER AND WASHER SYSTEM Wiper and Washer Switch Circuit

DESCRIPTION

This circuit provides power to operate the windshield wiper switch assembly. The manual operation signals are sent to the main body ECU LH (cowl side junction block LH).

WIRING DIAGRAM

A0160SXE03

INSPECTION PROCEDURE

Tech Tips

Before starting the following procedure, check that multiplex communication system (MPX) DTCs are not output Click here.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Combination Switch / Data List.

    5. Read the display on the intelligent tester.

      Combination Switch (Windshield Wiper Switch Assembly)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Front Washer Switch Front washer switch / ON or OFF

      ON: Front washer switch ON

      OFF: Front washer switch OFF

      		 -
      Front Wiper Mist Switch Front wiper MIST switch / ON or OFF

      ON: Front wiper switch in MIST

      OFF: Wiper switch not in MIST

      		 -
      Front Wiper Auto Switch Front wiper AUTO switch / ON or OFF

      ON: Front wiper switch in AUTO position

      OFF: Wiper switch not in AUTO position

      		 -
      Front Wiper Hi Switch Front wiper HI switch / ON or OFF

      ON: Front wiper switch in HI

      OFF: Wiper switch not in HI

      		 -
      Front Wiper Lo Switch Front wiper LO switch / ON or OFF

      ON: Front wiper switch in LO

      OFF: Wiper switch not in LO

      		 -
      Ignition Switch Signal Engine switch signal / ON or OFF

      ON: Engine switch on (IG)

      OFF: Engine switch off

      		 -
      Wiper Volume Position Front wiper volume (sensitivity) / 0 to 90 degrees

      0 degrees: FR wiper volume "+" position

      27 degrees: Switch is turned one notch towards the "-" side from the FR wiper volume "+" position

      63 degrees: Switch is turned one notch towards the "+" side from the FR wiper volume "-" position

      90 degrees: FR wiper volume "-" position

      If the value is NG, replace the windshield wiper switch assembly Click here.

    NG

    CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - BATTERY AND BODY GROUND) Click here

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - BATTERY AND BODY GROUND)


    1. A015YUQE12

      Disconnect the J26 windshield wiper switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J26-1 (B) - J26-5 (E) Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY Click here