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 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 

   11 to 14 V 

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

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

      Result 

      RESULT REFERENCE CHART
      
      

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

   B: Go to ELECTRIC POWER CONTROL SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

   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 REFERENCE CHART
      
      

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

   B: Go to CAN COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

   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 REFERENCE CHART
      
      

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

   B: Go to LIN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

   A: Go to next step 

6. CHECK FOR DTC* 
   1. Check for DTC (see DTC CHECK/CLEAR ).
   2. Clear the DTC (see DTC CHECK/CLEAR ).
   3. Recheck for DTC (see DTC CHECK/CLEAR ).

      Result 

      RESULT REFERENCE CHART
      
      

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

   B: Go to DIAGNOSTIC TROUBLE CODE CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

   A: Go to next step 

7. PROBLEM SYMPTOMS TABLE 
   1. Refer to the problem symptoms table (see PROBLEM SYMPTOMS TABLE ).

      Result 

      RESULT REFERENCE CHART
      
      

      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. Operation Check (see OPERATION CHECK ).
   2. Terminals of ECU (see TERMINALS OF ECU ).
   3. Data List/Active Test (see DATA LIST/ACTIVE TEST ).
9. ADJUST, REPAIR OR REPLACE 
   NOTE:

   • If the driving support ECU has been replaced, turn the power 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 (see INITIALIZATION ).
10. CONFIRMATION TEST 

    NEXT: END