How To Proceed With Troubleshooting

HINT:

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

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 

   11 to 14 V 

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

3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Use the Intelligent tester or Techstream to check if the CAN communication system is functioning normally.

   Result

   RESULT 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 

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

   Result

   RESULT 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 

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

   Result

   RESULT 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  7

   A: Go to next step 

6. 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 ).
7. 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 ).
8. CONFIRMATION TEST 

   NEXT: END