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.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   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

   
   
   • OKClick here
   • NGClick here
2. Click here

   PERFORM ACTIVE TEST USING INTELLIGENT TESTER (HEADLIGHT CLEANER)

   
   

   1. Using the intelligent tester, perform the Active Test (Click here).

      Table 1. Main Body

      Tester Display	Test Part	Control Range	Diagnostic Note
      Head Light Cleaner	Headlight cleaner operation	ON / OFF	-

      Tip:

      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.

   
   
   • OKClick here
   • NGClick here
3. Click here

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

   
   
   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 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

   
   
   • OKClick here
   • NGClick here
4. Click here

   INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY

   
   
   1. 

      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

   
   
   • OKClick here
   • NGClick here
5. Click here

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

   
   
   1. 

      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

   
   
   • OKClick here
   • NGClick here
6. Click here

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

7. Click here

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

8. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

9. Click here

   REPLACE HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLYClick here

10. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

11. Click here

    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.

       Tip:

       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).

    
    
    • OKClick here
    • NGClick here
12. Click here

    END (HEADLIGHT CLEANER CONTROL RELAY IS DEFECTIVE)