Nissan Versa Sedan. Instruction - part 279

ENGINE CONTROL SYSTEM

EC-115

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ABBIA1614GB

EC-116

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ENGINE CONTROL SYSTEM

ABBIA1701GB

DIAGNOSIS AND REPAIR WORKFLOW

EC-117

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000009267029

OVERALL SEQUENCE

*1: Include 1st trip DTC.

*2: Include 1st trip freeze frame data.

JSBIA0123GB

EC-118

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DIAGNOSIS AND REPAIR WORKFLOW

DETAILED FLOW

1.

GET INFORMATION FOR SYMPTOM

1. 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-120, "Diagnostic

Work Sheet"

.)

2. Ask if the customer requests I/M examination.

Malfunction information, obtained>>GO TO 2.

No malfunction information, but a request for I/M examination>>GO TO 13.

2.

CHECK DTC

1. Check DTC of 

″All DTC Reading″.

2. Perform the following procedure if DTC is displayed.

-

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

-

Erase only DTC of 

″ENGINE″.

With CONSULT: “How to Erase DTC and 1st Trip DTC” in 

EC-61, "CONSULT Function"

.

Without CONSULT: “How to Erase Self-diagnostic Results” in 

EC-58, "On Board Diagnosis Function"

.

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.

(Symptom Table is useful. Refer to 

EC-450, "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-456, "Description"

 and 

EC-

82, "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-456, "Description"

 and 

EC-

82, "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-84, "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

Instruction. 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.