WIPER AND WASHER SYSTEM(w/ Rain Sensor) Headlight Cleaner Motor and Relay Circuit

DTC Code DTC Name
Headlight Cleaner Motor and Relay Circuit

DESCRIPTION

This circuit provides power to the headlight cleaner control relay.

The headlight cleaner control relay sends the signal from the headlight cleaner switch assembly, etc. to the headlight cleaner motor and pump assembly to operate the headlight cleaner system.

WIRING DIAGRAM

E179456E03
E181487E03

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. CHECK HEADLIGHT TYPE

    1. Check the headlight type.

      Table 1. Result

      Result

      Proceed to

      HID Headlight

      A

      Halogen Headlight

      B

    CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR - BATTERY)Click here

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (HEADLIGHT CLEANER OPERATION)

    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the front wiper washer switch (windshield wiper switch assembly) on.

    4. Turn the intelligent tester on.

    5. Enter the following menus: Body / Main Body / Active Test.

    6. According to the display on the intelligent tester, perform the Active Test.

      Table 2. Main Body

      Tester Display

      Test Part

      Control Range

      Diagnostic Note

      Head Light Cleaner

      Headlight cleaner operation

      ON/OFF

      -
      Tip:

      The headlight cleaner system only operates when the front wiper washer switch (windshield wiper switch assembly) is turned on the first time. After that, the headlight cleaner system cannot be operated with the front wiper washer switch (windshield wiper switch assembly) until the ignition switch is turned off and then turned to ON.

      OK

      Headlight cleaner operates.

    CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR - BATTERY)Click here

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - BATTERY AND BODY GROUND)

    1. U123649E01

      Disconnect the A67 relay connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      A67-3 (IG) - Body ground

      Ignition switch ON

      11 to 14 V

      A67-3 (IG) - Body ground

      Ignition 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

      A67-4 (E) - Body ground

      Always

      Below 1 Ω
    Table 3. Text in Illustration

    *1

    Front view of wire harness connector

    (to Headlight Cleaner Control Relay)

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR - BATTERY)

    1. U123934E02

      Disconnect the A48 motor connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A48-1 - Body ground

      Always

      11 to 14 V
      Table 4. Text in Illustration

      *1

      Front view of wire harness connector

      (to Headlight Cleaner Motor and Pump Assembly)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - BATTERY AND BODY GROUND)

    1. U123649E02

      Disconnect the A67 relay connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      A67-3 (IG) - Body ground

      Ignition switch ON

      11 to 14 V

      A67-3 (IG) - Body ground

      Ignition 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

      A67-4 (E) - Body ground

      Always

      Below 1 Ω
    Table 5. Text in Illustration

    *1

    Front view of wire harness connector

    (to Headlight Cleaner Control Relay)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY

    1. E186096

      Remove the headlight cleaner motor (Click here).

    2. Apply battery voltage to the headlight cleaner motor and check the operation of the headlight cleaner motor.

      OK

      Measurement Condition

      Specified Condition

      Battery positive (+) → Terminal 1

      Battery negative (-) → Terminal 2

      Headlight cleaner motor operation is normal

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY

    (Click here)

  7. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - MAIN BODY ECU)

    1. U123765E02

      Disconnect the A67 relay connector.

    2. Disconnect the H81 ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A67-1 (HDLO) - H81-19 (HDLO)

      Always

      Below 1 Ω

      A67-1 (HDLO) - Body ground

      Always

      10 kΩ or higher
      Table 6. Text in Illustration

      *1

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      *2

      Front view of wire harness connector

      (to Main Body ECU [Instrument Panel Junction Block Assembly])

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR - HEADLIGHT CLEANER CONTROL RELAY)

    1. U123931E01

      Disconnect the A48 motor connector.

    2. Disconnect the A67 relay connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A48-2 - A67-6 (PB)

      Always

      Below 1 Ω

      A67-6 (PB) - Body ground

      Always

      10 kΩ or higher
      Table 7. Text in Illustration

      *1

      Front view of wire harness connector

      (to Headlight Cleaner Motor and Pump Assembly)

      *2

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR - BATTERY)

    1. U123934E02

      Disconnect the A48 motor connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A48-1 - Body ground

      Always

      11 to 14 V
      Table 8. Text in Illustration

      *1

      Front view of wire harness connector

      (to Headlight Cleaner Motor and Pump Assembly)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - BATTERY)

    1. U123651E01

      Disconnect the A67 relay connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      A67-3 (IG) - Body ground

      Ignition switch ON

      11 to 14 V

      A67-3 (IG) - Body ground

      Ignition switch off

      Below 1 V
      Table 9. Text in Illustration

      *1

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY

    1. E186096

      Remove the headlight cleaner motor (Click here).

    2. Apply battery voltage to the headlight cleaner motor and check the operation of the headlight cleaner motor.

      OK

      Measurement Condition

      Specified Condition

      Battery positive (+) → Terminal 1

      Battery negative (-) → Terminal 2

      Headlight cleaner motor operation is normal

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY

    (Click here)

  12. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR - HEADLIGHT CLEANER CONTROL RELAY AND BODY GROUND)

    1. U123933E01

      Disconnect the A48 motor connector.

    2. Disconnect the A67 relay connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A48-2 - A67-6 (PB)

      Always

      Below 1 Ω

      A67-4 (E) - Body ground

      Always

      Below 1 Ω

      A67-6 (PB) - Body ground

      Always

      10 kΩ or higher
      Table 10. Text in Illustration

      *1

      Front view of wire harness connector

      (to Headlight Cleaner Motor and Pump Assembly)

      *2

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR