How To Proceed With Troubleshooting

HINT: 

• Use this procedure to troubleshoot the theft deterrent system.
• The Techstream should be used in step 3.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. CUSTOMER PROBLEM ANALYSIS 
   1. Interview the customer to confirm the trouble. Refer to HOW TO PROCEED WITH TROUBLESHOOTING

      NEXT: Go to next step 

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 SECTION 

      A: Go to next step 

4. SYMPTOM SIMULATION 

   NEXT: Go to next step 

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. Refer to TERMINALS OF ECU 
   2. DATA LIST / ACTIVE TEST. Refer to DATA LIST / ACTIVE TEST 
7. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

8. CONFIRMATION TEST 

   NEXT → END