POWER WINDOW CONTROL SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP

   Result
   Proceed to NEXT

   
   

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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
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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

   
   

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4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

   
   

   1. Using the GTS, check for CAN communication system DTCs.

      Click here

      Result
      Result Proceed to CAN DTCs are not output A CAN DTCs are output B

   
   

   B

   GO TO CAN COMMUNICATION SYSTEM Click here

   A

5. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

   
   

   1. Using the GTS, check for LIN communication system DTCs.

      Click here

      Result
      Result Proceed to LIN DTCs are not output A LIN DTCs are output B

   
   

   B

   GO TO LIN COMMUNICATION SYSTEM Click here

   A

6. CHECK FOR DTC*

   
   

   1. Check for DTCs and make a note of any codes that are output.

      Click here

      
      Body Electrical > Master Switch > Trouble Codes
      Body Electrical > D-Door Motor > Trouble Codes
      Body Electrical > P-Door Motor > Trouble Codes
      Body Electrical > RL-Door Motor > Trouble Codes
      Body Electrical > RR-Door Motor > Trouble Codes

   2. Clear the DTCs.

      
      Body Electrical > Master Switch > Clear DTCs
      Body Electrical > D-Door Motor > Clear DTCs
      Body Electrical > P-Door Motor > Clear DTCs
      Body Electrical > RL-Door Motor > Clear DTCs
      Body Electrical > RR-Door Motor > Clear DTCs

   3. Recheck for DTCs.

      
      Body Electrical > Master Switch > Trouble Codes
      Body Electrical > D-Door Motor > Trouble Codes
      Body Electrical > P-Door Motor > Trouble Codes
      Body Electrical > RL-Door Motor > Trouble Codes
      Body Electrical > RR-Door Motor > Trouble Codes

      Result
      Result Proceed to DTCs are not output A DTCs are output B

   
   

   B

   GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

   A

7. 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

8. OVERALL ANALYSIS AND TROUBLESHOOTING*

   
   

   1. Operation Check

      Click here

   2. Terminals of ECU

      Click here

   3. Data List / Active Test

      Click here

   4. Fail-safe Chart

      Click here

   5. Inspection

      Result
      Proceed to NEXT

   
   

   NEXT

9. ADJUST, REPAIR OR REPLACE

   
   

   1. Check if any of the door window regulators, power window regulator motor assemblies, door glass or door glass runs have been removed and reinstalled.

      Result
      Result Proceed to Any of the door window regulators, power window regulator motor assemblies, door glass or door glass runs have been removed and reinstalled. A The door window regulators, power window regulator motor assemblies, door glass or door glass runs have not been removed and reinstalled. B

   
   

   B

   GO TO STEP 11 Click here

   A

10. INITIALIZE POWER WINDOW CONTROL SYSTEM

    
    

    1. Initialize the power window control system.

       Click here

       Result
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    NEXT

11. CONFIRMATION TEST

    Result
    Proceed to NEXT

    
    

    NEXT

    END