How To Proceed With Troubleshooting

HINT:

• Use the procedures to troubleshoot the pre-collision system.
• *: Use the Intelligent tester or Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 
2. CHECK CAN COMMUNICATION SYSTEM* 
   1. Using the Intelligent tester or Techstream, 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 

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

   Result 

   RESULT CHART
   
   

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

   B:  Go to step  6

   A: Go to next step 

4. 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  6

   A: Go to next step 

5. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Terminals of ECU (see TERMINALS OF ECU ).
   2. DATA LIST / ACTIVE TEST (see FAIL-SAFE CHART ).
6. ADJUST, REPAIR OR REPLACE 
7. CONFIRMATION TEST 

   END