How To Proceed With Troubleshooting

HINT:

Perform troubleshooting in accordance with the following flowchart.

*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 11 to 14 V 

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

3. PROBLEM SYMPTOM CONFIRMATION 
4. CHECK CAN COMMUNICATION SYSTEM* 
   1. Check for DTC (see DTC CHECK/CLEAR  ).

      Result 

      RESULT REFERENCE
      
      

      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 (see DTC CHECK/CLEAR  ).

      Result 

      RESULT REFERENCE
      
      

      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 REFERENCE
   
   

   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 (see TERMINALS OF ECU  ).
   2. DATA LIST/ACTIVE TEST (see DATA LIST/ACTIVE TEST  ).
8. REPAIR OR REPLACE 
9. CONFIRMATION TEST 

   NEXT: END