WIPER AND WASHER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP

   Result
   Proceed to NEXT

   
   

   NEXT

2. CUSTOMER PROBLEM ANALYSIS

   Tech Tips

   
   

   • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

   • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

   • The following 5 items are important points for problem analysis:

     What	Vehicle model, system name
     When	Date, time, occurrence frequency
     Where	Road conditions
     Under what conditions?	Driving conditions, weather conditions
     How did it happen?	Problem symptoms

   Result
   Proceed to NEXT

   
   

   NEXT

3. INSPECT BATTERY VOLTAGE

   
   

   1. Measure the battery voltage.

      Standard voltage
      11 to 14 V

      Tech Tips

      
      

      • A simple method to determine whether the battery is discharged is to operate the horn.

      • If the voltage is below 11 V, recharge or replace the battery before proceeding.

   2. Check the fuses and relays.

   3. Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

      Result
      Proceed to NEXT

   
   

   NEXT

4. CHECK VEHICLE TYPE

   
   

   1. Check the vehicle type.

      Result
      Result Proceed to w/o Headlight Cleaner System A w/ Headlight Cleaner System B

   
   

   B

   CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* Click here

   A

5. PROBLEM SYMPTOMS TABLE

   
   

   1. Refer to Problem Symptoms Table.

      Click here

      Result
      Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B

   
   

   B

   ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

   A

6. OVERALL ANALYSIS AND TROUBLESHOOTING*

   
   

   1. Operation Check

      Click here

   2. Terminals of ECU

      Click here

   3. Data List / Active Test

      Click here

   4. Inspection

      Result
      Proceed to NEXT

   
   

   NEXT

7. ADJUST, REPAIR OR REPLACE

   Result
   Proceed to NEXT

   
   

   NEXT

8. CONFIRMATION TEST

   Result
   Proceed to NEXT

   
   

   NEXT

   END

9. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

   
   

   1. Use the GTS to check if the CAN communication system is functioning normally.

      for LHD with Central Gateway ECU:

      Click here

      for LHD without Central Gateway ECU:

      Click here

      Result
      Result Proceed to CAN DTC is not output A CAN DTC is output B

   
   

   B

   GO TO CAN COMMUNICATION SYSTEM for LHD with Central Gateway ECU: GO TO CAN COMMUNICATION SYSTEM Click here GO TO CAN COMMUNICATION SYSTEM for LHD without Central Gateway ECU: GO TO CAN COMMUNICATION SYSTEM Click here

   A

10. CHECK FOR DTC*

    
    

    1. Check for DTCs.

       Click here

       
       Body Electrical > HL AutoLeveling > Trouble Codes

    2. Clear the DTCs.

       Click here

       
       Body Electrical > HL AutoLeveling > Clear DTCs

    3. Recheck for DTCs.

       Click here

       
       Body Electrical > HL AutoLeveling > Trouble Codes

       Result
       Result Proceed to DTC is not output A DTC is output (w/ Automatic Headlight Beam Lebeling Control System) B DTC is output (w/o Automatic Headlight Beam Lebeling Control System) C

    
    

    A

    GO TO STEP 5 Click here

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    C

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here