How To Proceed With Troubleshooting

HINT

• Use the following procedure to troubleshoot the theft deterrent system
• * Use the Techstream

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS 
   1. Interview the customer to confirm the problem (See HOW TO PROCEED WITH TROUBLESHOOTING )
3. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
   1. Use the Techstream to check for normal function of the multiplex communication system
      1. (ECU unconnected, communication line malfunctioning) If no code is output, proceed to A
      2. (ECU unconnected, communication line malfunctioning) If any code is output, proceed to B

   B: GO TO MULTIPLEX COMMUNICATION INFORMATION  (See SYSTEM DESCRIPTION )

   A: Go to next step 

4. SYMPTOM SIMULATION 
5. 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

   B: Go to step  7

   A: Go to next step 

6. PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM 
   1. Terminals of ECU (See TERMINALS OF ECU  )
   2. Data List/Active Test (See DATA LIST / ACTIVE TEST  )
7. ADJUST, REPAIR OR REPLACE 
8. CONFIRMATION TEST 

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