How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the pre-collision safety system.
• *: Use the intelligent tester.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT 

2. CHECK MULTIPLEX COMMUNICATION SYSTEM 
   1. Check for DTCs.
      DTC REFERENCE
      
      

      DTC is not output	A
      DTC is output	B

   B : GO TO MULTIPLEX COMMUNICATION SYSTEM 

   A : GO TO NEXT STEP 

3. CHECK CAN COMMUNICATION SYSTEM* 
   1. Check for DTCs.
      DTC REFERENCE
      
      

      DTC is not output	A
      DTC is output	B

   B : GO TO CAN COMMUNICATION SYSTEM 

   A : GO TO NEXT STEP 

4. CHECK FOR DTC* 
   1. Check for DTCs.
      1. Record the DTCs.
   2. Clear the DTCs.
   3. Recheck for DTCs.
      1. Simulate the malfunction and check if the DTCs are output again (See FAIL-SAFE CHART  ).
         DTC REFERENCE
         
         

         DTC is output	A
         No DTC is output	B
         No DTC is output, and malfunction can't be simulated or checked	C

   B : GO TO STEP   9 

   C : SYMPTOM SIMULATION 

   A : GO TO NEXT STEP 

5. DTC CHART* 

   NEXT 

6. CIRCUIT INSPECTION 

   NEXT 

7. REPAIR* 

   NEXT 

8. CONFIRMATION TEST 

   NEXT 

   END 

9. PROBLEM SYMPTOMS TABLE 

   NEXT 

10. ADJUST, REPAIR OR REPLACE 

    NEXT 

11. CONFIRMATION TEST 

    NEXT 

    END