WIPER AND WASHER SYSTEM Headlight Cleaner Motor and Relay Circuit

CAUTION / NOTICE / HINT

Note


  • First check that the front washer operates normally.*

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

DESCRIPTION

This circuit provides power to the headlight cleaner control relay.

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

WIRING DIAGRAM

B0018EJE02
B0019M0E06

PROCEDURE


  1. READ VALUE USING GTS


    1. Use the Data List to check if the Windshield wiper switch assembly is functioning properly Click here.

      AFS
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Front Window Washer Switch* Washer switch condition

      ON: Windshield wiper switch assembly (front washer switch) on

      OFF: Windshield wiper switch assembly (front washer switch) off

      		 -

      *: w/ Washer-linked function

      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Result Proceed to
      Headlight cleaner does not operate with headlight cleaner switch A
      Headlight cleaner does not operate with windshield wiper switch* B

      *: w/ Washer-linked function


    B

    INSPECT HEADLIGHT CLEANER CONTROL RELAY Click here

    A

  2. CHECK HARNESS AND CONNECTOR (WASHER WIRE HARNESS - HEADLIGHT ECU SUB-ASSEMBLY RH))


    1. Disconnect the A16 washer wire harness (windshield washer motor and pump assembly) connector.

    2. Disconnect the A65 headlight ECU sub-assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A16-4 - A65-18(FRWA) Always Below 1 Ω
      A16-4 - Body ground Always 10 kΩ or higher
      A65-18(FRWA) - Body ground Always 10 kΩ or higher

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

  3. INSPECT HEADLIGHT CLEANER CONTROL RELAY


    1. Remove the headlight cleaner control relay.

    2. Inspect the headlight cleaner control relay Click here.


    NG

    REPLACE HEADLIGHT CLEANER CONTROL RELAY

    OK

  4. INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY


    1. Remove the headlight cleaner motor and pump assembly Click here.

    2. Inspect the headlight cleaner motor and pump assembly Click here.


    NG

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY Click here

    OK

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


    1. Remove the headlight cleaner control relay.

    2. Disconnect the A65 headlight ECU sub-assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Headlight cleaner control relay connector 3 - Body ground Always Below 1 Ω
      Headlight cleaner control relay connector 1 - A65-7 (HLC) Always Below 1 Ω
      Headlight cleaner control relay connector 1 or A65-7 (HLC) - Body ground Always 10 kΩ or higher

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Headlight cleaner control relay connector 2 - Body ground Always 11 to 14 V
      Headlight cleaner control relay connector 5 - Body ground Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR