WIPER AND WASHER SYSTEM Headlight Cleaner Motor and Relay Circuit

DESCRIPTION



WIRING DIAGRAM

A001R29E01
A001RVVE01

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. CHECK HEADLIGHT TYPE


    1. Check the headlight type.

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

    B

    CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - HEADLIGHT CLEANER CONTROL RELAY) Click here

    A

  2. 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 ECU SUB-ASSEMBLY RH - WINDSHIELD WIPER SWITCH ASSEMBLY) Click here

    OK

  3. INSPECT HEADLIGHT CLEANER CONTROL RELAY


    1. Disconnect the A10 headlight cleaner control relay connector.

    2. Inspect the headlight cleaner control relay.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADLIGHT CLEANER CONTROL RELAY

    OK

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


    1. A001RP1C10
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the 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
      A10-3 (IG) - Body ground Power switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A10-4 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A001RP1C12
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the headlight cleaner control relay connector.

    2. Using a service wire, connect A10-6 (PB) 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 - AUXILIXRY BATTERY) Click here

    OK

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


    1. Disconnect the A10 headlight cleaner control relay connector.

    2. Disconnect the A17 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
      A10-2 (H) - A17-7 (HLC) Always Below 1 Ω
      A10-2 (H) or A17-7 (HLC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Disconnect the A17 headlight ECU sub-assembly RH connector.

    2. Disconnect the F36 windshield wiper switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A17-18 (FRWA) - F36-7 (WF) Always Below 1 Ω
      A17-18 (FRWA) or F36-7 (WF) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. A001PLUC01
      *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
      A55-1 - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the A55 headlight cleaner motor and pump assembly connector.

    2. Disconnect the A10 headlight cleaner control relay connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A55-2 - A10-6 (PB) Always Below 1 Ω
      A55-2 or A10-6 (PB) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - HEADLIGHT CLEANER CONTROL RELAY)

    A001RP1C14
    *a

    Front view of wire harness connector

    (to Headlight Cleaner Control Relay)

    1. Disconnect the headlight cleaner control relay connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A10-5 (FRWA) - Body ground Power switch on (IG), front washer switch off 11 to 14 V
      Power switch on (IG), front washer switch on Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - IG CIRCUIT AND BODY GROUND)


    1. A001RP1C15
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the headlight cleaner control relay connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A10-3 (IG) - Body ground Power switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A10-4 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A001RP1C13
      *a

      Front view of wire harness connector

      (to Headlight Cleaner Control Relay)

      Disconnect the headlight cleaner control relay connector.

    2. Using a service wire, connect A10-6 (PB) 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 - AUXILIARY BATTERY) Click here

    OK

  13. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - HEADLIGHT CLEANER CONTROL RELAY)


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      3F-31 - Body ground Light control switch in head position Below 1 V
      Light control switch off 4.2 V or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT CLEANER CONTROL RELAY

    NG

  14. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - HEADLIGHT CLEANER CONTROL RELAY)


    1. Disconnect the 3F instrument panel junction block assembly connector.

    2. Disconnect the A10 headlight cleaner control relay connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3F-31 - A10-1 (HDLO) Always Below 1 Ω
      3F-31 or A10-1 (HDLO) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. A001RSSC01
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      Remove the instrument panel junction block assembly.

      Click here

    2. Remove the main body ECU (multiplex network body ECU).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3F-31 - MB-15 (HRLY) Always Below 1 Ω
      3F-31 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

  16. REPLACE HEADLIGHT CLEANER CONTROL RELAY


    1. Replace the headlight cleaner control relay assembly with a new or a known good one.

      Click here

      Result
      Result Proceed to
      The operation of the headlight cleaner returns to normal. OK
      The operation of the headlight cleaner does not return to normal. NG

    OK

    END (HEADLIGHT CLEANER CONTROL RELAY WAS DEFECTIVE)

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

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


    1. A001PLUC02
      *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
      A55-1 - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the A55 headlight cleaner motor and pump assembly connector.

    2. Disconnect the A10 headlight cleaner control relay connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A55-2 - A10-6 (PB) Always Below 1 Ω
      A55-2 or A10-6 (PB) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR