How to Proceed With Troubleshooting

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Perform troubleshooting according to the following flowchart.
* *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CHECK DTC AND FREEZE FRAME DATA*

(a) Record DTCs and freeze frame data.

NEXT -- Continue to next step.

3. CLEAR DTC AND FREEZE FRAME DATA*

NEXT -- Continue to next step.

4. PROBLEM SYMPTOM CONFIRMATION

Result:





B -- Go to step 6
A -- Continue to next step.

5. SYMPTOM SIMULATION

NEXT -- Continue to next step.

6. CHECK DTC*

(a) Recheck for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:





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 How to Proceed With Troubleshooting.
* If communication to the power steering ECU assembly is not established through the Techstream, inspect terminals CANH and CANL of the DLC3 and power steering ECU assembly, and inspect the IG circuit of the power steering ECU assembly.

B -- Go to step 8
A -- Continue to next step.

7. PROBLEM SYMPTOMS TABLE

NEXT -- Continue to next step.

8. CIRCUIT INSPECTION

NEXT -- Continue to next step.

9. IDENTIFICATION OF PROBLEM*

NEXT -- Continue to next step.

10. REPAIR OR REPLACE

NEXT -- Continue to next step.

11. CONFIRMATION TEST

NEXT -- END