WIPER AND WASHER SYSTEM Washer Motor Circuit

DESCRIPTION

When the windshield washer motor and pump assembly receives signals from the windshield wiper switch assembly (washer switch) it operates to spray washer fluid from the washer nozzle sub-assemblies.

WIRING DIAGRAM


  1. B004AF1E03

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    1. Perform the Active Test according to the display on the GTS.

      Click here


      Body Electrical > Wiper > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Front Washer Operates the open side washer OFF or ON -
      Rear Washer Operates the closed side washer OFF or ON -

      Body Electrical > Wiper > Active Test
      Tester Display
      Front Washer

      Body Electrical > Wiper > Active Test
      Tester Display
      Rear Washer
      OK
      Washer fluid sprays from each washer nozzle.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY


    1. Disconnect the A15 windshield washer motor and pump assembly connector.

    2. Inspect the windshield washer motor and pump assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY Click here

    OK

  3. INSPECT WIPER MOTOR WIRE


    1. B004AY6C14
      *A for LHD
      *B for RHD
      *a Windshield Wiper Motor Assembly Side
      *b Wire Harness Side

      Remove the wiper motor wire.

      Click here

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      A-4 (WSR+) - B-4 Always Below 1 Ω
      A-3 (WSR-) - B-3 Always Below 1 Ω
      A-1 (GND) - B-1 Always Below 1 Ω
      A-8 (FAWB) - B-8 Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      A-1 (WSR+) - B-1 Always Below 1 Ω
      A-2 (WSR-) - B-2 Always Below 1 Ω
      A-4 (GND) - B-4 Always Below 1 Ω
      A-5 (FAWB) - B-5 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE WIPER MOTOR WIRE Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY - WIPER MOTOR WIRE)


    1. Disconnect the A15 windshield washer motor and pump assembly connector.

    2. Disconnect the Au1 wiper motor wire connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      A15-1 (B) - Au1-4 Always Below 1 Ω
      A15-2 (SW) - Au1-3 Always Below 1 Ω
      A15-1 (B) or Au1-4 - Body ground Always 10 kΩ or higher
      A15-2 (SW) or Au1-3 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      A15-1 (B) - Au1-1 Always Below 1 Ω
      A15-2 (SW) - Au1-2 Always Below 1 Ω
      A15-1 (B) or Au1-1 - Body ground Always 10 kΩ or higher
      A15-2 (SW) or Au1-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (WIPER MOTOR WIRE - BATTERY AND BODY GROUND)


    1. B004ATMC07
      *a

      Front view of wire harness connector

      (to Wiper Motor Wire)

      Disconnect the wiper motor wire connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Au1-1 - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      Au1-4 - Body ground Always Below 1 Ω

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      Au1-8 - Body ground Power switch off 11 to 14 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      Au1-5 - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE WINDSHIELD WIPER MOTOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR