WIPER AND WASHER SYSTEM (w/ Rain Sensor) 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, etc. to the headlight cleaner motor to operate the headlight cleaner system.

WIRING DIAGRAM

A003AUEE01
A003AUBE01

INSPECTION PROCEDURE

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.

      Result
      Result Proceed to
      for HID Headlight A
      for Halogen Headlight B

    B

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

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

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

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

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Head Light Cleaner Headlight cleaner operation ON/OFF -
      OK
      Headlight cleaner operates.

    NG

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

    OK

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


    1. A003C9DE08
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the A35 relay connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A35-3 (IG) - Body ground Ignition switch ON 11 to 14 V
      A35-3 (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
      A35-4 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

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


    1. A003EIME01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Headlight Cleaner Motor)

      Disconnect the A37 motor connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A37-2 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A003C9DE09
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the A35 relay connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A35-3 (IG) - Body ground Ignition switch ON 11 to 14 V
      A35-3 (IG) - Body ground Ignition switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY


    1. A003EARE01
      Text in Illustration
      *1

      Component without harness connected

      (Headlight Cleaner Motor)

      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

    NG

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY Click here

    OK

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


    1. A003CHVE01
      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)

      Disconnect the A35 relay connector.

    2. Disconnect the D81 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A35-1 (HDLO) - D81-19 (HDLO) Always Below 1 Ω
      A35-1 (HDLO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A003BP3E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Headlight Cleaner Motor)
      *2

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the A37 motor connector.

    2. Disconnect the A35 relay connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A37-1 - A35-6 (PB) Always Below 1 Ω
      A35-4 (E) - Body ground Always Below 1 Ω
      A35-6 (PB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

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


    1. A003EIME01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Headlight Cleaner Motor)

      Disconnect the A37 motor connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A37-2 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A003C9DE09
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the A35 relay connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A35-3 (IG) - Body ground Ignition switch ON 11 to 14 V
      A35-3 (IG) - Body ground Ignition switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY


    1. A003EARE01
      Text in Illustration
      *1

      Component without harness connected

      (Headlight Cleaner Motor)

      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

    NG

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY Click here

    OK

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


    1. A003BP3E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Headlight Cleaner Motor)
      *2

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the A37 motor connector.

    2. Disconnect the A35 relay connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A37-1 - A35-6 (PB) Always Below 1 Ω
      A35-4 (E) - Body ground Always Below 1 Ω
      A35-6 (PB) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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