How To Proceed With Troubleshooting

HINT:

• Use this procedure to troubleshoot the key reminder warning system.
• The hand-held tester should be used in steps  3 and  5.

1. VEHICLE BROUGHT TO WORKSHOP 
   1. Go to next step.
2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (See  CUSTOMER PROBLEM ANALYSIS CHECK   ) 
   1. Go to next step.
3. CHECK COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use the hand-held tester to check for normal function of the multiplex communication system.
      1. (ECU unconnected, communication stop, communication line malfunctioning) Without code outputs, proceed to A.
      2. (ECU unconnected, communication stop, communication line malfunctioning) With code outputs, proceed to B.
   1. B: Go to MULTIPLEX COMMUNICATION SECTION (See  PRECAUTION  ) 
   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. Pre-check (See PRE-CHECK  )
      1. Inspection with the hand-held tester (DATA LIST).
   2. Terminals of ECU (See TERMINALS OF ECU  )
   3. On-vehicle inspection
6. ADJUST, REPAIR OR REPLACE 
7. CONFIRMATION TEST 
   1. END