SEAT BELT SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP

   Result
   Proceed to NEXT

   
   

   NEXT

2. CUSTOMER PROBLEM ANALYSIS

   Tech Tips

   
   

   • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

   • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

   • The following 5 items are important points for problem analysis:

   What	Vehicle model, system name
   When	Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time
   Where	Whether the problem occurs at a specific location
   Under what conditions?	Whether the doors were locked or unlocked, whether the power switch was on (IG), whether the hybrid control system has started
   How did it happen?	Problem symptoms

   Result
   Proceed to NEXT

   
   

   NEXT

3. INSPECT AUXILIARY BATTERY VOLTAGE

   
   

   1. Measure the auxiliary battery voltage with power switch off.

      Standard voltage
      11 to 14 V

      If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

   2. Check the fuses and relays.

   3. Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

      Result
      Proceed to NEXT

   
   

   NEXT

4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

   
   

   1. Using the GTS, check for CAN communication system DTCs.

      Click here

      Result
      Result Proceed to CAN DTCs are not output A CAN DTCs are output B

   
   

   B

   GO TO CAN COMMUNICATION SYSTEM Click here

   A

5. CHECK PCS WARNING LIGHT

   
   

   1. Check the PCS warning light status.

      Result
      Result Proceed to Only the PCS warning light is blinking A The PCS warning light is not blinking B

   
   

   A

   B

6. CHECK MULTI-INFORMATION DISPLAY

   
   

   1. Check if a warning message for the pre-collision safety system is displayed on the multi-information display (in the combination meter assembly).

      OK
      Each function of the combination meter assembly operates normally.

      Result
      Result Proceed to Pre-collision safety system warning message is not displayed A "Pre-Collision System Malfunction Visit Your Dealer" and ""Pre-Collision Seat belt Unavailable" is displayed B

   
   

   B

   GO TO FAIL-SAFE CHART Click here

   A

7. CHECK DTC OUTPUT*

   
   

   1. Check for DTCs.

      Click here

      
      Body Electrical > Seat Belt Control > Trouble Codes

      OK
      DTCs are not output.

      Result
      Result Proceed to OK A NG (Pre-collision safety system DTCs are output) B NG (Seat belt system DTCs are output) C

      Tech Tips

      The seat belt control system may also output DTCs for pre-collision safety systems other than the seat belt system.

      When DTCs other than those in the Diagnostic Trouble Code Chart for the seat belt system are output, refer to the Diagnostic Trouble Code Chart for the pre-collision safety system.

      
      

      • for Stereo Camera Type: Click here

      • for Mono Camera Type: Click here

   
   

   B

   GO TO PRE-COLLISION SYSTEM for Stereo Camera Type: Click here GO TO PRE-COLLISION SYSTEM for Mono Camera Type: Click here

   C

   GO TO SEAT BELT SYSTEM Click here

   A

8. VEHICLE CONTROL HISTORY (SEAT BALT SYSTEM)

   
   

   1. Check vehicle control history.

      Click here

      
      Body Electrical > Seat Belt Control > Utility

      Tester Display
      Vehicle Control History (RoB)

   2. Record the vehicle control history.

      Result
      Result Proceed to X2041, X2042, X2043, X2040, X2044 and X2045 are output A X2041, X2042, X2043, X2040, X2044 and X2045 are not output B

   
   

   B

   GO TO VEHICLE CONTROL HISTORY Click here

   A

9. PROBLEM SYMPTOMS TABLE

   
   

   1. Refer to Problem Symptoms Table.

      Click here

      Result
      Result Proceed to Fault is not listed in Problem Symptoms Table A Fault is listed in Problem Symptoms Table B

   
   

   B

   GO TO STEP 11 Click here

   A

10. OVERALL ANALYSIS AND TROUBLESHOOTING*

    
    

    1. Operation check

       Click here

    2. Data List / Active Test

       Click here

    3. Terminals of ECU

       Click here

       Result
       Proceed to NEXT

    
    

    NEXT

11. REPAIR OR REPLACE

    Result
    Proceed to NEXT

    
    

    NEXT

12. CONFIRMATION TEST

    Result
    Proceed to NEXT

    
    

    NEXT

    END