How To Proceed With Troubleshooting

Perform troubleshooting according to the following flowchart.

HINT:

• For further details, see the page given.
• The intelligent tester can be used at steps 2, 3, 6, 9 and 12.

1. VEHICLE BROUGHT TO WORKSHOP 
2. CHECK DTC AND FREEZE FRAME DATA 
   1. Record DTCs and freeze frame data
3. CLEAR DTC AND FREEZE FRAME DATA 
4. PROBLEM SYMPTOM CONFIRMATION 

   SYMPTOM DOES NOT OCCUR (GO TO STEP   5 ) 

   SYMPTOM OCCURS (GO TO STEP   6 ) 

5. SYMPTOM SIMULATION 
6. CHECK DTC 
   1. Recheck for DTCs.

      HINT:

      • Refer to the diagnostic trouble code chart if any DTCs are output.
      • If any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first (see HOW TO PROCEED WITH TROUBLESHOOTING ).
      • If communication to the power steering ECU assembly is not established through the intelligent tester, inspect terminals SIL of the DLC3 and power steering ECU assembly, and inspect the IG circuit of the power steering ECU assembly.

   NORMAL SYSTEM CODE IS OUTPUT:  Go to step  7

   TROUBLE CODE IS OUTPUT:  Go to step  8

7. PROBLEM SYMPTOMS TABLE 
8. DTC CHART 
9. CIRCUIT INSPECTION 
10. IDENTIFICATION OF PROBLEM 
11. REPAIR OR REPLACE 
12. CONFIRMATION TEST 

    NEXT: END