How To Proceed With Troubleshooting

HINT

• Use these procedures to troubleshoot the seat belt warning system
• *. Use the Techstream

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard Voltage: 

   11 to 14 V 

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

3. CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
   1. Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally (See DIAGNOSTIC TROUBLE CODE CHART )

      Result 

      RESULT REFERENCE
      
      

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

   B: GO TO MULTIPLEX COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

   A: Go to next Step 

4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM (CAN)* 
   1. Use the Techstream to check if the CAN Communication System (CAN) is functioning normally

      Result 

      RESULT REFERENCE
      
      

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

   B: GO TO CAN COMMUNICATION SYSTEM  (See FAIL-SAFE CHART )

   A: Go to next Step 

5. PROBLEM SYMPTOMS TABLE 

   Result 

   RESULT REFERENCE
   
   

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

   B:  GO TO STEP  7

   A: Go to next Step 

6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Data List/Active Test (See DATA LIST / ACTIVE TEST  )
   2. Terminals of ECU (See TERMINALS OF ECU  )
   3. On-vehicle Inspection (See ON-VEHICLE INSPECTION  )
7. REPAIR OR REPLACE 
8. CONFIRMATION TEST 

   NEXT: END