How To Proceed With Troubleshooting

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

HINT
Perform troubleshooting in accordance with the following flowchart.

*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

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

NEXT -- Continue to next step.

3. CHECK DTC AND FREEZE FRAME DATA*

NEXT -- Continue to next step.

4. PROBLEM SYMPTOM CONFIRMATION

NEXT -- Continue to next step.

5. CHECK CAN COMMUNICATION SYSTEM*

(a) Check for DTCs Diagnosis System for w/ Smart Key System, Diagnosis System for w/o Smart Key System).).

Result





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 -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting.

C -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting.
A -- Continue to next step.

6. CHECK DTC*

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

Result





B -- Go to step 9
A -- Continue to next step.

7. PROBLEM SYMPTOMS TABLE

(a) PROBLEM SYMPTOMS TABLE Power Steering System.

Result





B -- Go to step 9
A -- Continue to next step.

8. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) TERMINALS OF ECU Pinout Values and Diagnostic Parameters.

(b) DATA LIST / ACTIVE TEST Data List / Active Test.

NEXT -- Continue to next step.

9. REPAIR OR REPLACE

NEXT -- Continue to next step.

10. CONFIRMATION TEST

NEXT -- END