How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the seat belt warning system.
• *: Use the intelligent tester.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT 

2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 

   11 to 14 V 

   If the voltage is below 11 V, recharge or replace the battery before proceeding.

   NEXT 

3. CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
   1. Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.
   RESULT
   
   

   Result	Proceed to
   MPX DTC is not output	A
   MPX DTC is output	B

   B : GO TO NEXT STEP 

   Go to  MULTIPLEX COMMUNICATION SYSTEM 

   A : GO TO NEXT STEP 

4. PROBLEM SYMPTOMS TABLE 
   RESULT
   
   

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

   B : GO TO NEXT STEP 

   Go to step   7 

   A : GO TO NEXT STEP 

5. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. DATA LIST / ACTIVE TEST 
   2. TERMINALS OF ECU 
   3. ON-VEHICLE INSPECTION 

   NEXT 

6. REPAIR OR REPLACE 

   NEXT 

7. CONFIRMATION TEST 

   NEXT 

   END