WIPER AND WASHER SYSTEM (w/ Rain Sensor) Wiper and Washer Switch Circuit

DESCRIPTION

This circuit provides power to operate the windshield wiper switch. The manual operation signals are sent to the windshield wiper ECU.

WIRING DIAGRAM

A015CEJE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT FUSE (ECU-IG No. 1)


    1. Remove the ECU-IG No. 1 fuse from the cowl side junction block LH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      ECU-IG No. 1 fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

  2. READ VALUE USING INTELLIGENT TESTER (WINDSHIELD WIPER SWITCH)


    1. Check the Data List for proper functioning of the windshield wiper switch.

      Combination Switch
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      F Wiper LO SW Front wiper LO switch / ON or OFF

      ON: Front wiper switch in LO

      OFF: Front wiper switch not in LO

      		 -
      F Wiper HI SW Front wiper HI switch / ON or OFF

      ON: Front wiper switch in HI

      OFF: Front wiper switch not in HI

      		 -
      F Wiper AUTO SW Front wiper AUTO switch / ON or OFF

      ON: Front wiper switch in AUTO

      OFF: Front wiper switch not in AUTO

      		 -
      F Wiper MIST SW Front wiper MIST switch / ON or OFF

      ON: Front wiper switch in MIST

      OFF: Front wiper switch not in MIST

      		 -
      F Washer SW Front washer switch / ON or OFF

      ON: Front washer switch on

      OFF: Front washer switch off

      		 -
      OK
      The display is as specified in the normal condition.

    NG

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

    OK

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

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


    1. A0158UME02

      Disconnect the E16 switch connector.

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

      Standard Voltage
      for LH Side
      Tester Connection Switch Condition Specified Condition
      E16-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V
      E16-2 (+B) - Body ground Engine switch off Below 1 V
      for RH Side
      Tester Connection Switch Condition Specified Condition
      E16-3 (+B) - Body ground Engine switch on (IG) 11 to 14 V
      E16-3 (B) - Body ground Engine switch off Below 1 V

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

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      E16-10 (E) - Body ground Always Below 1 Ω
      for RH Side
      Tester Connection Condition Specified Condition
      E16-5 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY Click here