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WIPER AND WASHER SYSTEM Headlight Cleaner Motor and Relay Circuit

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DTC Code DTC Name
  Headlight Cleaner Motor and Relay Circuit
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DESCRIPTION

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

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • First check that the front washer operates normally.

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  • Check that the lighting system is normally before performing the following procedure.

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

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PROCEDURE


  1. Click here

    PERFORM ACTIVE TEST USING GTS


    1. Perform the Active Test according to the display on the GTS.

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      1. Body Electrical > AFS (Sub) > Active Test
        Tester Display Measurement Item Control Range Diagnostic Note
        Headlight Cleaner Operate headlight cleaner motor and pump assembly OFF or ON -



      1. Body Electrical > AFS (Sub) > Active Test
        Tester Display
        Headlight Cleaner




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

  2. Click here

    READ VALUE USING GTS


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

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      1. Body Electrical > AFS (Sub) > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Front Window Washer Switch Windshield wiper switch assembly (washer switch) condition OFF or ON

        OFF: Windshield wiper switch assembly (washer switch) off

        ON: Windshield wiper switch assembly (washer switch) on

        		 -



      1. Body Electrical > AFS (Sub) > Data List
        Tester Display
        Front Window Washer Switch




      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

  3. Click here

    CHECK HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY


    1. Disconnect the A60 headlight cleaner motor and pump assembly connector.

    2. Inspect the headlight cleaner motor and pump assembly.

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      Result
      Proceed to
      OK
      NG

  4. Click here

    INSPECT HEADLIGHT CLEANER CONTROL RELAY (H-LP CLN)


    1. Remove the headlight cleaner control relay (H-LP CLN) from engine room relay block.

    2. Inspect the headlight cleaner control relay (H-LP CLN).

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      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPLACE HEADLIGHT CLEANER CONTROL RELAY (H-LP CLN)

  5. Click here

    CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY - HEADLIGHT CLEANER CONTROL RELAY [H-LP CLN] AND BATTERY)


    1. Disconnect the A60 headlight cleaner motor and pump assembly connector.

    2. Remove the headlight cleaner control relay (H-LP CLN) from engine room relay block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A60-1 - Headlight cleaner control relay (H-LP CLN) terminal 3 Always Below 1 Ω
      A60-1 or Headlight cleaner control relay (H-LP CLN) terminal 3 - 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
      A60-2 - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. Click here

    CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY [H-LP CLN] - HEADLIGHT ECU SUB-ASSEMBLY RH, BATTERY AND BODY GROUND)


    1. Remove the headlight cleaner control relay (H-LP CLN) from engine room relay block.

    2. Disconnect the A32 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 (H-LP CLN) terminal 2 - A32-7 (HLC) Always Below 1 Ω
      Headlight cleaner control relay (H-LP CLN) terminal 5 - Body ground Always Below 1 Ω
      Headlight cleaner control relay (H-LP CLN) terminal 2 or A32-7 (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 (H-LP CLN) terminal 1 - Body ground Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE HEADLIGHT ECU SUB-ASSEMBLY RHClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR