With Rear Active Steer

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow


DETAILED FLOW


1. INTERVIEW THE CUSTOMER

It is also important to clarify customer complaints before inspection. First of all, reproduce symptoms, and understand them fully. Ask the customer about his/her complaints carefully. In some cases, it is necessary to check symptoms by driving the customer with the customer.

CAUTION:
Customers are not professional. It is dangerous to make an easy guess like "maybe the customer means that...," or "maybe the customer mentions this symptom".
- GO TO 2.

2. CHECK SYMPTOM

Reproduce symptoms indicated by the customer, based on information obtained from the interview with the customer. In addition, check if the symptoms are caused by the Fail-safe function and the protective function.
With Rear Active Steer.

CAUTION:
If the symptoms are normal operation, check each part thoroughly and gain the understanding from the customer, explaining that the symptoms are not malfunction.
- GO TO 3.

3. CHECK CURRENT STATE

Start the engine.

CAUTION:
Stop the vehicle.
Does RAS warning lamp turn ON?
YES- GO TO 4.
NO- GO TO 8.

4. PERFORM SELF-DIAGNOSIS

With CONSULT
Perform self-diagnosis.
Is any DTC detected?
YES- Record or print DTC and freeze frame data (FFD). GO TO 5.
NO- GO TO 8.

5. RECHECK SYMPTOM

With CONSULT
1.Turn the ignition switch OFF and wait for 10 seconds or more.
2.Record the values of "DATA MONITOR" for each DTC detected by self-diagnosis.
3.Record the values of "FREEZE FRAME DATA" for each DTC detected by self-diagnosis.
4.Erase the memory of self-diagnosis results (history) of "4WAS(MAIN)/RAS/HICAS".

CAUTION:
- When replacing the RAS control unit according to the self-diagnosis, replace it without erasing self-diagnosis results (history).
- When erasing the memory of the self-diagnosis results (history), print or record all the values of
"DATA MONITOR" for each DTC with CONSULT to erase the memory of the self-diagnosis result (history).
5.Perform "DTC CONFIRMATION PROCEDURE" for each malfunction.
NOTE:
- When multiple DTCs are detected, RAS Control Unit With Rear Active Steer to determine the sequence of performing a self-diagnosis.
- When DTC is not detected, refer to Freeze frame data.
Is any DTC detected?
YES- GO TO 6.
NO- Check harness and connector, based on information obtained from the interview with the customer. Intermittent Incident.

6. REPAIR AND REPLACE PART

1.Repair or replace malfunctioning part.

CAUTION:
Securely connect the removed parts and connectors.
2.Erase the memory of self-diagnosis results (history) of "4WAS(MAIN)/RAS/HICAS".
- GO TO 7.

7. RECHECK SYMPTOM

With CONSULT
Perform "DTC CONFIRMATION PROCEDURE" for each malfunction.
NOTE:
- When multiple DTCs are detected, RAS Control Unit With Rear Active Steer to determine the sequence of performing a self-diagnosis.
- When DTC is not detected, refer to Freeze frame data.
Is any DTC detected?
YES- GO TO 6.
NO- GO TO 9.

8. DIAGNOSIS BY SYMPTOM

Estimate and check malfunctioning parts, based on the symptoms obtained from the diagnosis by symptom.
Is a malfunctioning part identified?
YES- GO TO 9.
NO- Check harness and connector, based on information obtained from the interview with the customer. Intermittent Incident.

9. FINAL CHECK

With CONSULT
1.Check the input-output reference values of RAS control unit.
2.Recheck the symptom under the same conditions as those for the successfully reproduced malfunction symptom.
Is a malfunction symptom reproduced?
OK- GO TO 4.
NO- INSPECTION END