How To Proceed With Troubleshooting

HINT:

• Use this procedure to troubleshoot the theft deterrent system.
• Techstream should be used in step  2.

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS 
   1. Interview the customer to confirm the trouble (See HOW TO PROCEED WITH TROUBLESHOOTING ).
3. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use Techstream to check for normal function of the multiplex communication system.
      1. (ECU unconnected, communication line malfunctioning) Without code output, proceed to A.
      2. (ECU unconnected, communication line malfunctioning) With code output, proceed to B.

   B:  Go To MULTIPLEX COMMUNICATION SYSTEM

   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 6 

   A: Go to Next Step 

6. PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM 
   1. Terminals of ECU (See TERMINALS OF ECU  ).
7. ADJUST, REPAIR OR REPLACE 
8. CONFIRMATION TEST 

   NEXT: END