How To Proceed With Troubleshooting

HINT: 

• Use these procedures to troubleshoot the dynamic radar cruise control system.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. INSPECT BATTERY VOLTAGE 

   Standard voltage

   11 to 14 V

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

   NEXT: Go to next step 

3. CHECK FOR DTC (ELECTRIC POWER CONTROL SYSTEM)* 
   1. Using the Techstream, check if the electric power control system is functioning normally.
      RESULT
      
      

      Result	Proceed to
      DTC B22B3 is not output	A
      DTC B22B3 is output	B

      B → Go to ELECTRIC POWER CONTROL SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE TABLE 

      A: Go to next step 

4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Use the Techstream to check if the CAN communication system is functioning normally.
      RESULT
      
      

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

      B → Go to CAN COMMUNICATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE TABLE 

      A: Go to next step 

5. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* 
   1. Use the Techstream to check if the LIN communication system is functioning normally.
      RESULT
      
      

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

      B → Go to LIN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      A: Go to next step 

6. CHECK FOR DTC* 
   1. Check for DTC. Refer to DTC CHECK/CLEAR .
   2. Clear the DTC. Refer to DTC CHECK/CLEAR .
   3. Recheck for DTC. Refer to DTC CHECK/CLEAR .
      RESULT
      
      

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

      B → Go to DIAGNOSTIC TROUBLE CODE TABLE. Refer to  DIAGNOSTIC TROUBLE CODE TABLE  

      A: Go to next step 

7. PROBLEM SYMPTOMS TABLE 
   1. Refer to 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 step   9 

      A: Go to next step 

8. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Refer to OPERATION CHECK .
   2. Refer to TERMINALS OF ECU .
   3. Refer to DATA LIST/ACTIVE TEST .

      NEXT: Go to next step 

9. ADJUST, REPAIR OR REPLACE 
   NOTE:

   • If the driving support ECU has been replaced, turn the engine switch off → on (IG) for 10 seconds → off to perform the initialization.
   • When the front millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed. Refer to INSTALLATION .

   NEXT: Go to next step 

10. CONFIRMATION TEST 

    NEXT → END