How To Proceed With Troubleshooting

HINT:

• Use this procedure to troubleshoot the front power seat control system with the memory function.
• The hand-held tester should be used in steps  3 and  5.

1. VEHICLE BROUGHT TO WORKSHOP 
   1. NEXT: 
2. CUSTOMER PROBLEM ANALYSIS CHECK AND PROBLEM SYMPTOM CHECK (SEE  CUSTOMER PROBLEM ANALYSIS CHECK   ) 
   1. NEXT: 
3. CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use the hand-held tester to check for normal function of the multiplex communication system.
      1. (ECU not connected, communication line malfunctioning) If no code is output, proceed to A.
      2. (ECU not connected, communication line malfunctioning) If any code is output, proceed to B.
   1. B : Go to MULTIPLEX COMMUNICATION SYSTEM (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
   2. A : Go to next step. 
4. PROBLEM SYMPTOMS TABLE (SEE  PROBLEM SYMPTOMS TABLE   ) 
   1. If the fault is not listed on the problem symptoms table, proceed to A.
   2. If the fault is listed on the problem symptoms table, proceed to B.
   1. B : Go to step   6 
   2. A : Go to next step. 
5. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. DATA LIST/ACTIVE TEST (see DATA LIST/ACTIVE TEST  ).
      1. Inspection with the hand-held tester (DATA LIST).
      2. Inspection with the hand-held tester (ACTIVE TEST).
   2. Terminals of ECU (see TERMINALS OF ECU  ).
   3. Inspection (see ECU POWER SOURCE CIRCUIT  to POWER SEAT MOTOR CIRCUIT ).
   1. NEXT: 
6. ADJUST, REPAIR OR REPLACE 
   1. NEXT: Go to next step. 
7. CONFIRMATION TEST 
   1. NEXT: END