How To Proceed With Troubleshooting

HINT: 

• Use these procedures to troubleshoot the power steering system.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. INSPECT AUXILIARY BATTERY VOLTAGE 

   Standard voltage

   11 to 14 V

   If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

   NEXT: Go to next step 

3. CHECK DTC AND FREEZE FRAME DATA* 

   HINT: 

   Refer to DTC Check / Clear. Refer to DTC CHECK / CLEAR .

   NEXT: Go to next step 

4. PROBLEM SYMPTOM CONFIRMATION 

   Result

   Result	Proceed to
   Symptom does not occur.	A
   Symptom occurs.	B

   B → Go to step 6 

   A: Go to next step 

5. SYMPTOM SIMULATION 

   NEXT: Go to next step 

6. CHECK CAN COMMUNICATION SYSTEM* 
   1. Check for DTCs. Refer to DIAGNOSIS SYSTEM .

      Result

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

      HINT: 

      • If any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.
      • If communication to the power steering ECU assembly cannot be established through the Techstream, inspect terminals CANH and CANL of the DLC3 and the power steering ECU assembly, and the IG circuit of the power steering ECU assembly.

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

      A: Go to next step 

7. CHECK FOR DTC* 
   1. Check for DTCs. Refer to DTC CHECK / CLEAR .

      HINT: 

      Refer to Diagnostic Trouble Code Chart when any DTCs are output. Refer to DIAGNOSTIC TROUBLE CODE CHART .

      Result

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

      B → Go to step 10 

      A: Go to next step 

8. PROBLEM SYMPTOMS TABLE 
   1. Refer to 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 10 

      A: Go to next step 

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

      NEXT: Go to next step 

10. REPAIR OR REPLACE 

    NEXT: Go to next step 

11. CONFIRMATION TEST 

    NEXT → END