How To Proceed With Troubleshooting

HINT: 

• Use the following procedure to troubleshoot the pre-collision 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, recharge or replace the battery before proceeding to the next step.

   NG → CHARGE OR REPLACE BATTERY 

   OK: Go to next step 

3. CHECK CAN COMMUNICATION SYSTEM* 
   1. Use the Techstream to check if the CAN communication system is functioning normally. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .
      RESULT
      
      

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

      B → GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      A: Go to next step 

4. CHECK FOR DTC* 
   1. Check for DTCs. Refer to DTC CHECK / CLEAR .
      1. Record the DTCs.
   2. Clear the DTCs.
   3. Recheck for DTCs.
      1. Attempt to duplicate the malfunction and check if the DTCs are output again. Refer to DTC CHECK / CLEAR .
         RESULT
         
         

         Result	Proceed to
         DTC is not output	A
         DTC is output	B
         No DTC is output, and malfunction cannot be duplicated or checked	C

      B → GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART  

      C → GO TO SYMPTOM SIMULATION. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      A: Go to next step 

5. PROBLEM SYMPTOMS TABLE 

   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 7 

   A: Go to next step 

6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Data List / Active Test. Refer to DATA LIST / ACTIVE TEST 
   2. Terminals of ECU. Refer to TERMINALS OF ECU 

      NEXT: Go to next step 

7. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

8. CONFIRMATION TEST 

   NEXT → END