How To Proceed With Troubleshooting

HINT:

• Use this procedure to troubleshoot the power window control system.
• The intelligent tester should be used in steps  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 unconnected, communication line malfunctioning) With code outputs, proceed to B.

   B: GO TO MULTIPLEX COMMUNICATION SYSTEM

   A: GO TO NEXT STEP

4. PROBLEM SYMPTOMS TABLE

   See PROBLEM SYMPTOMS TABLE 

5. OVERALL ANALYSIS AND TROUBLESHOOTING
   1. Circuit inspection

      See POWER WINDOW MASTER SWITCH POWER SOURCE CIRCUIT 

   2. Terminal of ECU

      See TERMINALS OF ECU 

6. ADJUST, REPAIR OR REPLACE
7. RESET POWER WINDOW MOTOR

   See OPERATION CHECK 

   End