How To Proceed With Troubleshooting

HINT:

• Use this procedure to troubleshoot the power window control system.
• The intelligent tester should be used in step  3 and  5.

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK 
3. CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use the intelligent tester to confirm normal function of the multiplex communication system.
      1. (ECU unconnected, communication line malfunctioning) Without code outputs, proceed to A.
      2. (ECU connected, communication line malfunctioning) With code outputs, proceed to B.

   B: Go to  MULTIPLEX COMMUNICATION SYSTEM 

   A: GO TO NEXT STEP 

4. PROBLEM SYMPTOMS TABLE 
5. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. Data list/Active test
   2. Circuit inspection
   3. Terminal of ECU
6. ADJUST, REPAIR OF REPLACE 
7. RESET POWER WINDOW MOTOR  See ADJUSTMENT .

   END