How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the power window control system.
• *: Use the intelligent tester.

1. VEHICLE BROUGHT TO WORKSHOP 

   GO TO NEXT STEP 

2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 11 to 14 V 

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

   GO TO NEXT STEP 

3. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
   1. Using the intelligent tester, check if the Multiplex Communication System (MPX) is functioning normally (see DIAGNOSIS SYSTEM  ).

      Result: 

      COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)
      
      

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

   B: Go to  MULTIPLEX COMMUNICATION SYSTEM 

   A: GO TO NEXT STEP 

4. PROBLEM SYMPTOMS TABLE 

   Result: 

   PROBLEM SYMPTOMS TABLE
   
   

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

   B: Go to step   6 

   A: GO TO NEXT STEP 

5. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. DATA LIST/ACTIVE TEST 
   2. TERMINALS OF ECU 
   3. ON-VEHICLE INSPECTION 
   4. Inspection
      1. See POWER WINDOW REGULATOR MOTOR 

   GO TO NEXT STEP 

6. REPAIR OR REPLACE 

   GO TO NEXT STEP 

7. CONFIRMATION TEST 

   END