WIPER AND WASHER SYSTEM(w/ Rain Sensor) 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 switch, etc. to the headlight cleaner motor to operate the headlight cleaner system.

WIRING DIAGRAM

A01X9EBE10

PROCEDURE


  1. INSPECT FUSE (ECU-IG No.1, H-LP CLR)


    1. Remove the ECU-IG No.1 fuse from the main body ECU.

    2. Remove the H-LP CLR fuse from the engine junction block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      ECU-IG No.1 fuse Always Below 1 Ω
      H-LP CLR fuse

    NG

    REPLACE FUSE (ECU-IG No. 1, H-LP CLR)

    OK

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (HEADLIGHT CLEANER)


    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

      for Headlight Cleaner System with Wiper Washer Function

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

      OK
      Headlight cleaner operates.

    OK

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

    NG

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


    1. A01XA5TE06
      *1 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
      3 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      3 (IG) - Body ground Engine switch off Below 1 V

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      4 (E) - Body ground Engine switch on (IG) Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY


    1. A01X3G5E02
      *1 Component without harness connected: (Headlight Cleaner Motor and Pump Assembly)

      Remove the headlight cleaner motor and pump assembly 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 (+) → Terminal 1

      Battery negative (-) → Terminal 2

      		 Headlight cleaner motor operation is normal

    NG

    REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (CLEANER MOTOR - CONTROL RELAY AND BATTERY)


    1. A01X7E2E09
      *1 Front view of wire harness connector: (to Headlight Cleaner Motor and Pump Assembly)
      *2 Front view of wire harness connector: (to Headlight Cleaner Control Relay)

      Disconnect the headlight cleaner motor and pump assembly connector.

    2. Disconnect the headlight cleaner control relay connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      1 - Body ground Always 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 - 6 (PB) Always Below 1 Ω
      2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE HEADLIGHT CLEANER CONTROL RELAY


    1. Temporarily replace the headlight cleaner control relay with a new or normally functioning one Click here.

    2. Check that the headlight cleaner system operates normally.

      OK
      Headlight cleaner system operates normally.

      Tech Tips

      for Headlight Cleaner System with Wiper Washer Function

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


    OK

    END (HEADLIGHT CLEANER CONTROL RELAY IS DEFECTIVE)

    NG

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