WIPER AND WASHER SYSTEM 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

B001CYUE05

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


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


    1. Using the intelligent tester, perform the Active Test Click here.

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

      Tech Tips

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

      OK
      Headlight cleaner operates.

    OK

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

    NG

  2. INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY


    1. A01XM2P

      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 (+) → 2

      Battery negative (-) → 1

      		 Headlight cleaner motor operation is normal

    NG

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY - BATTERY)


    1. B001D19E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Motor and Pump Assembly)

      Disconnect the A37 headlight cleaner 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

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


    1. B001DO6E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the A38 headlight cleaner control relay connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A38-3 (IG) - Body ground Ignition switch ON 11 to 14 V
      A38-3 (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
      A38-4 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY - HEADLIGHT CLEANER CONTROL RELAY)


    1. Disconnect the A38 headlight cleaner control relay connector.

    2. Disconnect the A37 headlight cleaner motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A37-1 - A38-6 (PB) Always Below 1 Ω
      A38-6 (PB) - Body ground Always 10 kΩ or higher

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR