Nissan Teana J32. Manual - part 367

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-10, "Diagnostic Work

Sheet"

>> GO TO 2.

CHECK DTC

Check DTC.

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

EC-102, "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-400, "Symptom Table"

Check related service bulletins for information.

Are any symptoms described and any DTCs detected?

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

CONFIRM THE SYMPTOM

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

EC-404, "Description"

and

EC-

386, "Fail safe"

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

>> GO TO 5.

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-404, "Description"

and

EC-

386, "Fail safe"

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

>> GO TO 6.

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

EC-388, "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.

>> Check according to

GI-35, "Intermittent Incident"

PERFORM BASIC INSPECTION

Perform

EC-11, "BASIC INSPECTION : Special Repair Requirement"

Will CONSULT-III be used?

DIAGNOSIS AND REPAIR WORKFLOW

EC-9

< BASIC INSPECTION >

[VQ25DE, VQ35DE]

YES

>> GO TO 7.

>> GO TO 9.

PERFORM “SPEC” OF “DATA MONITOR” MODE

With CONSULT-III

Check that “MAS A/F SE-B1”, “B/FUEL SCHDL”, “A/F ALPHA-B1” and “A/F ALPHA-B2” are within the SP
value using CONSULT-III in “SPEC” of “DATA MONITOR” mode. Refer to

EC-124, "Component Function

Check"

Are they within the SP value?

YES

>> GO TO 9.

>> GO TO 8.

DETECT MALFUNCTIONING PART BY TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Detect malfunctioning part according to

EC-125, "Diagnosis Procedure"

Is a malfunctioning part detected?

YES

>> GO TO 11.

>> GO TO 9.

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE

Detect malfunctioning system according to

EC-400, "Symptom Table"

based on the confirmed symptom in

step 4, and determine the trouble diagnosis order based on possible causes and symptoms.

>> GO TO 10.

10.

DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.
NOTE:
The Diagnostic Procedure in EC section described based on open circuit inspection. A short circuit inspection
is also required for the circuit check in the Diagnostic Procedure. For details, refer to “Circuit Inspection” in

GI-

37, "Circuit Inspection"

Is a malfunctioning part detected?

YES

>> GO TO 11.

>> Monitor input data from related sensors or check voltage of related ECM terminals using CON-

SULT-III. Refer to

EC-357, "Reference Value"

11.

REPAIR OR REPLACE THE MALFUNCTIONING PART

Repair or replace the malfunctioning part.

Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-
ment.

Check DTC. If DTC is displayed, erase it, refer to

EC-102, "Diagnosis Description"

>> GO TO 12.

12.

FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Overall Function Check again,
and then check that the malfunction have been completely repaired.
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and check that
the symptom is not detected.
Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 10.
YES-2 >> Symptom remains: GO TO 6.
NO

>> Before returning the vehicle to the customer, always erase unnecessary DTC in ECM and TCM

(Transmission Control Module). (Refer to

EC-102, "Diagnosis Description"

.) If the completion of

SRT is needed, drive vehicle under the specific DRIVING PATTERN in

EC-392,

"How to Set SRT Code"

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