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

DTC Code DTC Name
Front Wiper Motor Circuit

DESCRIPTION

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

WIRING DIAGRAM

E188667E01

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. U123764E02

      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
      Table 1. Text in Illustration

      *1

      for LHD

      *2

      for RHD

      *3

      Front view of wire harness connector

      (to Windshield Wiper Motor Assembly)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  2. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY

    1. E178248

      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

    REPLACE WINDSHIELD WIPER MOTOR ASSEMBLY

    (Click here)

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

    U123737E02

    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
      Table 2. 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)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    U123738E02

    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
      Table 3. 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)

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR