Detailed Flow

INTERVIEW FROM THE CUSTOMER
Clarify customer complaints before inspection. First of all, perform an interview utilizing Refer to Diagnostic Work Sheet . And reproduce symptoms as well as fully understand it. Ask customer about his/her complaints carefully. Check symptoms by driving vehicle with customer, if necessary.

CAUTION: Customers are not professional. Never guess easily like "maybe the customer means that...," or "maybe the customer mentions this symptom".

GO TO 2.
CHECK SYMPTOM
Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained by interview. Also check that the symptom is not caused by protection function. Refer to Protection Function .

CAUTION: When the symptom is caused by normal operation, fully inspect each portion and obtain the understanding of customer that the symptom is not caused by a malfunction.

GO TO 3.
PERFORM SELF-DIAGNOSIS
With CONSULT

Perform self-diagnosis for "EPS/DAST 3", "DAST 1" and "DAST 2".

Is any DTC detected?

YES

Record or print DTC and freeze frame data. GO TO 4.

NO

GO TO 6.
RECHECK SYMPTOM
With CONSULT
1. Erase self-diagnostic results for "EPS/DAST 3", "DAST 1" or "DAST 2".
2. Perform confirmation procedures for the error detected system.
  NOTE:
  If some DTCs are detected at the same time, determine the order for performing the diagnosis based on following.
  - EPS/DAST 3: Refer to DTC Inspection Priority Chart .
  - DAST 1: Refer to DTC Inspection Priority Chart .
  - DAST 2: Refer to DTC Inspection Priority Chart .
Is any DTC detected?

YES

GO TO 5.

NO

Check harness and connectors based on the information obtained by interview.
- Check enlarged contact spring of terminal. Refer to Inspection .
- Perform intermittent incident while turning steering wheel. Refer to Inspection .
REPAIR OR REPLACE ERROR-DETECTED PARTS
1. Repair or replace error-detected parts.
2. Reconnect part or connector after repairing or replacing.
3. When DTC is detected, erase self-diagnostic results for "EPS/DAST 3", "DAST 1" or "DAST 2".
GO TO 7.
IDENTIFY ERROR-DETECTED SYSTEM BY SYMPTOM DIAGNOSIS
Estimate error-detected system based on symptom diagnosis and perform inspection.

Can the error-detected system be identified?

YES

GO TO 7.

NO

Check harness and connectors based on the information obtained by interview.
- Check enlarged contact spring of terminal. Refer to Inspection .
- Perform intermittent incident while turning steering wheel. Refer to Inspection .
FINAL CHECK
With CONSULT
1. Check the reference value for steering force control module, steering angle main control module or steering angle sub control module.
2. Recheck the symptom and check that symptom is not reproduced on the same conditions.
Is the symptom reproduced?

YES

GO TO 3.

NO

INSPECTION END