WIPER AND WASHER SYSTEM(w/ Rain Sensor) Front Wiper Motor Circuit

DESCRIPTION

The windshield wiper relay assembly controls the windshield wiper motor assembly.

WIRING DIAGRAM

A002LMZE01

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (FRONT WIPER MOTOR - BATTERY)


    1. A002OU9E02
      Text in Illustration
      *1 for LHD
      *2 for RHD
      *3

      Front view of wire harness connector

      (to Windshield Wiper Motor Assembly)

      Disconnect the A12*1 or A11*2 motor connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      A12-2 (B) - Body ground Ignition switch ON 11 to 14 V
      A12-2 (B) - Body ground Ignition switch off Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      A11-2 (B) - Body ground Ignition switch ON 11 to 14 V
      A11-2 (B) - Body ground Ignition switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY


    1. A002NJM

      Remove the windshield wiper motor assembly Click here.

    2. Apply battery voltage to the front wiper motor and check the speed of the front wiper motor.

      OK
      for LHD
      Measurement Condition Specified Condition

      Battery positive (+) → Terminal 1

      Battery negative (-) → Terminal 5

      		 Motor operates at low speed

      Battery positive (+) → Terminal 4

      Battery negative (-) → Terminal 5

      		 Motor operates at high speed
      for RHD
      Measurement Condition Specified Condition

      Battery positive (+) → Terminal 5

      Battery negative (-) → Terminal 4

      		 Motor operates at low speed

      Battery positive (+) → Terminal 3

      Battery negative (-) → Terminal 4

      		 Motor operates at high speed

    NG

    REPLACE WINDSHIELD WIPER MOTOR ASSEMBLY Click here

    OK

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

    A002MCQE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Windshield Wiper Motor Assembly)
    *4

    Front view of wire harness connector

    (to Windshield Wiper Switch Assembly)

    1. Disconnect the A12*1 or A11*2 motor connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the H15 switch connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      A12-2 (B) - H15-2 (+B) Always Below 1 Ω
      A12-1 (+1) - H15-3 (+1)
      A12-4 (+2) - H15-4 (+2)
      A12-5 (E) - Body ground
      A12-2 (B) - Body ground Always 10 kΩ or higher
      A12-1 (+1) - Body ground
      for RHD
      Tester Connection Condition Specified Condition
      A11-2 (B) - H15-2 (+B) Always Below 1 Ω
      A11-5 (+1) - H15-3 (+1)
      A11-3 (+2) - H15-4 (+2)
      A11-4 (E) - Body ground
      A11-2 (B) - Body ground Always 10 kΩ or higher
      A11-5 (+1) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT WIPER MOTOR - WINDSHIELD WIPER RELAY)

    A002PMAE02
    Text in Illustration
    *1 for LHD
    *2 for RHD
    *3

    Front view of wire harness connector

    (to Windshield Wiper Motor Assembly)
    *4

    Front view of wire harness connector

    (to Windshield Wiper Relay Assembly)

    1. Disconnect the A12*1 or A11*2 motor connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the H56 relay connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      A12-4 (+2) - H56-11 (+2) Always Below 1 Ω
      A12-3 (+S) - H56-1 (+SM)
      A12-4 (+2) - Body ground Always 10 kΩ or higher
      A12-3 (+S) - Body ground
      for RHD
      Tester Connection Condition Specified Condition
      A11-3 (+2) - H56-11 (+2) Always Below 1 Ω
      A11-1 (+S) - H56-1 (+SM)
      A11-3 (+2) - Body ground Always 10 kΩ or higher
      A11-1 (+S) - Body ground

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR