How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the smart entry system.
• The hand-held tester should be used in STEP 3 and 5.

1. VEHICLE BROUGHT TO WORKSHOP 

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2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (See  CUSTOMER PROBLEM ANALYSIS CHECK   ) 

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3. INSPECT 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.

   Result: 

   RESULT
   
   

   Result	Proceed to
   (ECU not connected, communication line malfunctioning) Without code outputs	A
   (ECU not connected, communication line malfunctioning) With code outputs	B

   1. B: Go to MULTIPLEX COMMUNICATION SYSTEM (See  DIAGNOSTIC TROUBLE CODE CHART  ) 
   2. A: GO TO NEXT STEP 
4. PROBLEM SYMPTOMS TABLE  

   Result: 

   RESULT
   
   

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

   1. B: Go to STEP  6 
   2. A: GO TO NEXT STEP 
5. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. On-vehicle inspection (See ON-VEHICLE INSPECTION  )
   2. DATA LIST/ACTIVE TEST 
      1. Inspection with the hand-held tester (DATA LIST)
      2. Inspection with the hand-held tester (ACTIVE TEST)
   3. TERMINALS OF ECU 

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6. ADJUST, REPAIR OR REPLACEMENT 

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7. CONFIRMATION TEST 

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   END