WIPER AND WASHER SYSTEM Wiper and Washer Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

A000ZDZE01

PROCEDURE


  1. READ VALUE USING FUSE (P-D/C CUT, D-IG1-1)


    1. Remove the P-D/C CUT fuse form the passenger side junction block.

    2. Remove the D-IG1-1 fuse form the main body ECU.

    3. Measure the resistance according to the values in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      P-D/C CUT fuse Always Below 1 Ω
      D-IG1-1 fuse

    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

      		 -
      F Wiper VOL POS 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

      		 -
      IG SW SIG power switch signal / ON or OFF

      ON: power switch ON (IG)

      OFF: power switch OFF

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

    OK

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

    NG

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


    1. A000UKUE03
      Front view of wire harness connector
      *1 (to Windshield Wiper Switch)

      Disconnect the L25 switch connector.

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      L25-1 (B) - Body ground Always 11 to 14 V
      L25-2 (IG) - Body ground Power switch ON (IG) 11 to 14 V
      L25-2 (IG) - Body ground Power switch OFF Below 1 V

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

      Standard resistance
      Tester Connection Condition Specified Condition
      L25-8 (E) - Body ground Always Below 1 Ω

    OK

    REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY Click here

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR