How To Proceed With Troubleshooting

HINT: 

• Use the following procedure to troubleshoot the power window control system.
• The Techstream should be used in steps  4,  5 and  7.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. CUSTOMER PROBLEM ANALYSIS CHECK 
   • 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 in the 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

   NEXT: Go to next step 

3. INSPECT BATTERY VOLTAGE 
   1. Measure the battery voltage.

      Standard voltage

      11 to 14 V

      If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

      NEXT: Go to next step 

4. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally.

      Result

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

      B → GO TO MULTIPLEX COMMUNICATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE TABLE 

      A: Go to next step 

5. CHECK FOR DTC 
   1. Check for DTCs and note any codes that are output. Refer to DTC CHECK/CLEAR .
   2. Delete DTCs.
   3. Recheck for DTCs.

      Result

      Result	Proceed to
      No DTCs output	A
      DTCs output	B

      B → GO TO DIAGNOSTIC TROUBLE CODE TABLE. Refer to  DIAGNOSTIC TROUBLE CODE TABLE  

      A: Go to next step 

6. PROBLEM SYMPTOMS TABLE 
   1. Refer to PROBLEM SYMPTOMS TABLE .

      Result

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

      B → GO TO STEP   8 

      A: Go to next step 

7. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. Operation Check. Refer to OPERATION CHECK 
   2. Data list/Active test. Refer to DATA LIST/ACTIVE TEST 
   3. Terminals of ECU. Refer to TERMINALS OF ECU 

      NEXT: Go to next step 

8. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

9. RESET POWER WINDOW MOTOR 
   1. If the power window master switch AUTO light is blinking, reset the power window regulator motor. Refer to INITIALIZATION .

      NEXT: Go to next step 

10. CONFIRMATION TEST 

    NEXT → END