Work Flow

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow


DETAILED FLOW


1. INTERVIEW FROM THE CUSTOMER

Clarify customer complaints before inspection. First of all, perform an interview utilizing "Diagnostic Work Sheet" and reproduce symptoms to understand them fully. Ask customer about his/her complaints carefully. Check symptoms by driving vehicle with customer, if necessary.

CAUTION:
Customers are not professional. Never make assumptions like "maybe the customer means that...," or
"maybe the customer mentioned this symptom".
- GO TO 2.

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" Power Steering Control Module.

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.

3. CHECK VEHICLE CONDITION

With CONSULT
1.Turn ignition switch ON.
2.Check "C/U TEMP" and "C/U TEMP A" in "DATA MONITOR" of "EPS".





Is the inspection result normal?
YES- GO TO 4.
NO- Wait with the ignition switch OFF until the data monitor indication becomes 90 �C (194 �F) or less.
Go to 4 after the temperature drops to 90 �C (194 �F) or less.

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 7.

5. RECHECK SYMPTOM

With CONSULT
1.Erase self-diagnostic results for "EPS".
2.Perform DTC confirmation procedures for the malfunctioning system.
NOTE:
If some DTCs are detected at the same time, determine the order for performing the diagnosis based on STC13, "DTC Inspection Priority Chart".
Is any DTC detected?
Revision: March 20122013 Infiniti JX
YES- GO TO 6.
NO- Check harness and connectors based on the information obtained by interview.

6. REPAIR OR REPLACE THE MALFUNCTIONING COMPONENTS.

- Repair or replace the malfunctioning components.
- Reconnect part or connector after repairing or replacing.
- When DTC is detected, erase self-diagnostic results for "EPS".
- GO TO 8.

7. IDENTIFY THE MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS

Estimate the malfunctioning system based on symptom diagnosis and perform inspection.
Can the malfunctioning system be identified?
YES- GO TO 8.
NO- Check harness and connectors based on the information obtained by interview.

8. FINAL CHECK

With CONSULT
1.Check the reference value for power steering 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.