POWER STEERING SYSTEM

CAUTION / NOTICE / HINT

PROCEDURE

1. VEHICLE BROUGHT TO WORKSHOP

   Result

   Proceed to
   NEXT

   NEXT

2. INSPECT BATTERY VOLTAGE

   1. Measure the voltage of the battery.

      Standard voltage

      11 to 14 V

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

   2. Using the GTS, inspect battery voltage reduction history "Battery Voltage Lo Record" in the Data List (Click here).

   Result

   Proceed to
   NEXT

   NEXT

3. CHECK DTC AND FREEZE FRAME DATA*

   Tip:

   Refer to DTC Check / Clear.

   Click here

   Result

   Proceed to
   NEXT

   NEXT

4. PROBLEM SYMPTOM CONFIRMATION

   Result

   Proceed to
   Symptom does not occur
   Symptom occurs

   Symptom occurs

   CHECK CAN COMMUNICATION SYSTEM*Click here

   Symptom does not occur

5. SYMPTOM SIMULATION

   Result

   Proceed to
   NEXT

   NEXT

6. CHECK CAN COMMUNICATION SYSTEM*

   1. Check for DTCs.

      Click here

      Result

      Proceed to
      CAN communication system DTC is not output
      CAN communication system DTC is output

      Tip:

      • 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 GTS, inspect terminals CANH and CANL of the DLC3 and the power steering ECU assembly, and the IG circuit of the power steering ECU assembly.

   CAN communication system DTC is output

   PROCEED TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

   for LHD with Central Gateway ECU:Click here

   for RHD with Central Gateway ECU:Click here

   for LHD without Central Gateway ECU:Click here

   for RHD without Central Gateway ECU:Click here

   CAN communication system DTC is not output

7. CHECK FOR DTC*

   1. Check for DTCs.

      Click here

      Tip:

      Refer to Diagnostic Trouble Code Chart when any DTCs are output.

      Click here

      Result

      Proceed to
      DTC is not output
      DTC is output

   DTC is output

   REPAIR OR REPLACEClick here

   DTC is not output

8. PROBLEM SYMPTOMS TABLE

   1. Refer to Problem Symptoms Table.

      Click here

      Result

      Proceed to
      Fault is not listed in Problem Symptoms Table
      Fault is listed in Problem Symptoms Table

   Fault is listed in Problem Symptoms Table

   REPAIR OR REPLACEClick here

   Fault is not listed in Problem Symptoms Table

9. OVERALL ANALYSIS AND TROUBLESHOOTING*

   1. Refer to Terminals of ECU.

      Click here

   2. Refer to Data List / Active Test.

      Click here

   Result

   Proceed to
   NEXT

   NEXT

10. REPAIR OR REPLACE

    Result

    Proceed to
    NEXT

    NEXT

11. CONFIRMATION TEST

    Result

    Proceed to
    NEXT

    NEXT

    END