WIPER AND WASHER SYSTEM Headlight Cleaner Motor and Relay Circuit

DESCRIPTION

The headlight light control ECU sub-assembly RH controls the headlight cleaner motor and pump assembly.

WIRING DIAGRAM

B005AL5E01

CAUTION / NOTICE / HINT

Note


  • First check that the front washer operates normally.

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

PROCEDURE


  1. READ VALUE USING GTS


    1. Read the Data List according to the display on the GTS.

      Click here


      Body Electrical > HL AutoLeveling > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Front Window Washer Switch Washer switch condition ON/OFF

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

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

      		 -

      Body Electrical > HL AutoLeveling > Data List
      Tester Display
      Front Window Washer Switch
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH - WINDSHIELD WIPER SWITCH ASSEMBLY) Click here

    OK

  2. INSPECT HEADLIGHT CLEANER CONTROL RELAY


    1. Remove the headlight cleaner control relay from the No. 2 engine room relay block assembly.

    2. Inspect the headlight cleaner control relay.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADLIGHT CLEANER CONTROL RELAY

    OK

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


    1. B0056YKC03
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Remove the headlight cleaner control relay from the No. 2 engine room relay block assembly.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Headlight cleaner control relay terminal 1 - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY CIRCUIT)


    1. B0056YKC03
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Remove the headlight cleaner control relay from the No. 2 engine room relay block assembly.

    2. Using a service wire, connect terminal 3 and body ground.

      Note

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

    3. Check the headlight cleaner motor and pump assembly operate.

      OK
      Headlight cleaner motor and pump assembly operate.
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

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


    1. B0056YKC03
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Remove the headlight cleaner control relay from the No. 2 engine room relay block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Headlight cleaner control relay terminal 5 - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH)


    1. Remove the headlight cleaner control relay from the No. 2 engine room relay block assembly.

    2. Disconnect the A20 headlight light control 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 terminal 2 - A20-7 (HLC) Always Below 1 Ω
      Headlight cleaner control relay terminal 2 or A20-7 (HLC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. CHECK HARNESS AND CONNECTOR (HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH - WINDSHIELD WIPER SWITCH ASSEMBLY)


    1. Disconnect the A20 headlight light control ECU sub-assembly RH connector.

    2. Disconnect the I29*1 or I124*2 windshield wiper switch assembly connector.


      • *1: for LH Side Type

      • *2: for RH Side Type

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

      Standard Resistance
      for LH Side Type
      Tester Connection Condition Specified Condition
      A20-18 (FRWA) - I29-4 (WF) Always Below 1 Ω
      A20-18 (FRWA) or I29-4 (WF) - Body ground Always 10 kΩ or higher
      for RH Side Type
      Tester Connection Condition Specified Condition
      A20-18 (FRWA) - I124-7 (WF) Always Below 1 Ω
      A20-18 (FRWA) or I124-7 (WF) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. B0058WTC01
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Motor and Pump Assembly)

      Disconnect the headlight cleaner motor and pump assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A24-2 - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY


    1. Disconnect the headlight cleaner motor and pump assembly connector.

    2. Inspect the headlight cleaner motor and pump assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY Click here

    OK

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


    1. Disconnect the A24 headlight cleaner motor and pump assembly connector.

    2. Remove the headlight cleaner control relay from the No. 2 engine room relay block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A24-1 - Headlight cleaner control relay terminal 3 Always Below 1 Ω
      A24-1 or headlight cleaner control relay terminal 3 Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR