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 TABLE
   
   

   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 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 TABLE
   
   

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

   B: Go to CAN COMMUNICATION SYSTEM  (See 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 TABLE
   
   

   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 TABLE
   
   

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

   B: Go to  DIAGNOSTIC TROUBLE CODE TABLE  

   A: Go to Next Step 

7. PROBLEM SYMPTOMS TABLE 
   1. Refer to PROBLEM SYMPTOMS TABLE  .

      Result 

   RESULT TABLE
   
   

   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. See OPERATION CHECK  .
   2. See TERMINALS OF ECU  .
   3. See DATA LIST/ACTIVE TEST  .
9. ADJUST, REPAIR OR REPLACE 
   NOTE:

   • When the driving support ECU is replaced with a new one, initialization must be performed (see REMOVAL  ).
   • When the front millimeter wave radar sensor is replaced with a new one, adjustment of the radar sensor beam axis must be performed (see REMOVAL  ).
10. CONFIRMATION TEST 

    NEXT: END