Nissan March K13. Manual - part 159

ENGINE CONTROL SYSTEM

EC-97

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ENGINE CONTROL SYSTEM

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DIAGNOSIS AND REPAIR WORKFLOW

EC-99

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Work Flow

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OVERALL SEQUENCE

DETAILED FLOW

JMBIA0078GB

EC-100

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DIAGNOSIS AND REPAIR WORKFLOW

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) using the “Diagnostic Work Sheet”. (Refer to 

EC-102, "Diagnostic Work

Sheet"

.)

>> GO TO 2.

2.

CHECK DTC

1.

Check DTC.

2.

Perform the following procedure if DTC is displayed.

-

Record DTC and freeze frame data. (Print them out with CONSULT-III or GST.)

-

Erase DTC. (Refer to “How to Erase DTC and 1st trip DTC” in 

EC-45, "Diagnosis Description"

.)

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.
(Symptom Table is useful. Refer to 

EC-299, "Symptom Table"

.)

3.

Check related service bulletins for information.

Is any symptom described and is any DTC detected?

Symptom is described, DTC is detected>>GO TO 3.
Symptom is described, DTC is not detected>>GO TO 4.
Symptom is not described, DTC is detected>>GO TO 5.

3.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer (except MIL ON).
Also study the normal operation and fail safe related to the symptom. Refer to 

EC-307, "Description"

 and 

EC-

75, "Fail Safe"

.

Diagnostic Work Sheet is useful to verify the incident.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

4.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Also study the normal operation and fail safe related to the symptom. Refer to 

EC-307, "Description"

 and 

EC-

75, "Fail Safe"

.

Diagnostic Work Sheet is useful to verify the incident.
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 make sure that DTC is
detected again.
If two or more DTCs are detected, refer to 

EC-77, "DTC Inspection Priority Chart"

 and determine trouble

diagnosis order.
NOTE:
• Freeze frame data is useful if the DTC is not detected.
• Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service

Manual. This simplified check procedure is an effective alternative though DTC cannot be detected during
this check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIR-
MATION PROCEDURE.

Is DTC detected?

YES

>> GO TO 10.

NO

>> Check according to 

GI-33, "Intermittent Incident"

.

6.

PERFORM BASIC INSPECTION

Perform 

EC-109, "Work Procedure"

.

Do you have CONSULT-III?