Diagnosis and Repair Workflow

Diagnosis and Repair Workflow

Overall Sequence





Detailed Flow

1. GET INFORMATION FOR SYMPTOM

Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred).


GO TO 2

2. CHECK DTC

1 Check DTC for BCM.
2 Perform the following procedure if DTC is displayed.
- Erase DTC.
- Study the relationship between the cause detected by DTC and the symptom described by the customer.
1 Check related service bulletins for information.

Is any symptom described and any DTC detected?
Symptom is described, DTC is displayed
Symptom is described, DTC is displayed: GO TO 3
Symptom is described, DTC is not displayed
Symptom is described, DTC is not displayed: GO TO 4
Symptom is not described, DTC is displayed: GO TO 5
Symptom is not described, DTC is displayed

3. CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect SDT to the vehicle in "Data list" mode and check real-time diagnosis results.

Verify relation between the symptom and the condition when the symptom is detected.


GO TO 5

4. CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect SDT to the vehicle in "Data list" mode and check real-time diagnosis results.

Verify relation between the symptom and the condition when the symptom is detected.


GO TO 6

5. PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC Confirmation Procedure for the displayed DTC, and then check that DTC is detected again.

If two or more DTCs are detected, refer to [DTC Inspection Priority Chart: BCM] BCM (Lighting Systems) (BCM) and determine trouble diagnosis order.

Is DTC detected?
YES
GO TO 8
NO
Refer to [Service Information for Electrical Incident: Intermittent Incident] Service Information for Electrical Incident: Intermittent Incident.

6. PERFORM BASIC INSPECTION

Perform Basic Inspection. Refer to [Pre-Inspection for Diagnostic] Pre-Inspection for Diagnostic.


GO TO 7

7. DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE

Detect malfunctioning system according to Symptom Table based on the confirmed symptom in step 4.


GO TO 8

8. DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.

NOTE:
The Diagnostic Procedure is described based on open circuit inspection. A short circuit inspection is also required for the circuit check in the Diagnostic Procedure.


GO TO 9

9. REPAIR OR REPLACE THE MALFUNCTIONING PART

1 Repair or replace the malfunctioning part.
2 Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replacement.
3 Check DTC. If DTC is displayed, erase it.


GO TO 10

10. FINAL CHECK

When DTC was detected in step 9, perform DTC Confirmation Procedure or Component Function Check again, and then check that the malfunctions have been fully repaired.

When symptom was described by the customer, refer to the confirmed symptom in step 3 or 4, and check that the symptom is not detected.

Does the symptom reappear?
YES (DTC is detected)
GO TO 8
YES (Symptom remains)
GO TO 6
NO
ERROR! Unknown action!Inspection End.