WIPER AND WASHER SYSTEM Wiper and Washer Switch Circuit

CAUTION / NOTICE / HINT

Note

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

DESCRIPTION

This circuit provides power to operate the windshield wiper switch. The manual operation signals are sent to the No. 2 multiplex network body ECU.

WIRING DIAGRAM

A01WUGSE04

PROCEDURE


  1. READ VALUE USING GTS


    1. Using the GTS, read the Data List.

      Body No. 4
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Rear Wiper Lo Switch Rear wiper LO switch / ON or OFF

      ON: Rear wiper switch in LO

      OFF: Rear wiper switch not in LO

      		 -
      Rear Wiper Int Switch Rear wiper INT switch / ON or OFF

      ON: Rear wiper switch in INT

      OFF: Rear wiper switch not in INT

      		 -
      Rear Washer Switch Rear washer switch / ON or OFF

      ON: Rear washer switch on

      OFF: Rear washer 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

  2. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY


    1. Remove the windshield wiper switch assembly Click here.

    2. Inspect the windshield wiper switch assembly Click here.


    NG

    REPLACE WINDSHIELD WIPER SWITCH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - NO. 2 BODY ECU AND BODY GROUND)


    1. Disconnect the E15 and E16 windshield wiper switch assembly connector.

    2. Disconnect the L33 No. 2 multiplex network body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E15-3 (+1R) - L33-4 (WRLO) Always Below 1 Ω
      E15-2 (C1R) - L33-18 (WRIN)
      E16-5 (WR) - L33-5 (WRSW)
      E15-4 (EW) - Body ground
      E15-3 (+1R) or L33-4 (WRLO) - Body ground 10 kΩ or higher
      E15-2 (C1R) or L33-18 (WRIN) - Body ground
      E16-5 (WR) or L33-5 (WRSW) - Body ground

    OK

    REPLACE NO. 2 MULTIPLEX NETWORK BODY ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR