How To Proceed With Troubleshooting

HINT: 

Perform troubleshooting in accordance with the following flowchart.

*: 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.

   NEXT: Go to next step 

3. PROBLEM SYMPTOM CONFIRMATION 

   NEXT: Go to next step 

4. CHECK CAN COMMUNICATION SYSTEM* 
   1. Check for DTC.Refer to DTC CHECK / CLEAR .
      RESULT
      
      

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

      HINT: 

      • When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.
      • When communication to the power steering ECU is not established through the Techstream, inspect terminals SIL of the DLC3 and the power steering ECU, and the IG circuit of the power steering ECU.

      B → PROCEED TO CAN COMMUNICATION SYSTEM 

      A: Go to next step 

5. CHECK DTC* 
   1. Check for DTC.Refer to DTC CHECK / CLEAR .
      RESULT
      
      

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

      A → Go to step 8 

      B: Go to next step 

6. 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 8 

   A: Go to next step 

7. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Terminals of ECU.Refer to TERMINALS OF ECU .
   2. DATA LIST / ACTIVE TEST.Refer to DATA LIST / ACTIVE TEST .

      NEXT: Go to next step 

8. REPAIR OR REPLACE 

   NEXT: Go to next step 

9. CONFIRMATION TEST 

   NEXT → END