Nissan X-Trail 32. Manual - part 2085

TM-298

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DIAGNOSIS AND REPAIR WORK FLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000010622477

NOTE:
“DTC” includes DTC at the 1st trip. 

1.

OBTAIN INFORMATION ABOUT SYMPTOM

Refer to 

TM-299, "Diagnostic Work Sheet"

 and interview the customer to obtain the malfunction information

(conditions and environment when the malfunction occurred) as much as possible when the customer brings
in the vehicle.

>> GO TO 2.

2.

CHECK DTC

1.

Before checking the malfunction, check whether any DTC exists.

2.

If DTC exists, perform the following operations.

-

Records the DTCs. (Print out using CONSULT and affix to the Work Order Sheet.) 

-

Erase DTCs.

-

Check the relation between the cause found by DTC and the malfunction information from customer. 

TM-

395, "Symptom Table"

 can be used effectively.

3.

Check the relevant information including STI, etc. 

Do malfunction information and DTC exists?

Malfunction information and DTC exists.>>GO TO 3.
Malfunction information exists but no DTC.>>GO TO 4.
No malfunction information, but DTC exists.>>GO TO 5.

3.

REPRODUCE MALFUCTION SYSTEM

Check the malfunction described by the customer on the vehicle.
Check if the behavior is fail safe or normal operation. Refer to 

TM-284, "Fail-safe"

.

Interview sheet can be used effectively when reproduce malfunction conditions. Refer to 

TM-299, "Diagnostic

Work Sheet"

.

Verify the relationship between the symptom and the conditions in which the malfunction described by the cus-
tomer occurs.

>> GO TO 5.

4.

REPRODUCE MALFUNCTION SYMPTOM

Check the malfunction described by the customer on the vehicle.
Check if the behavior is fail safe or normal operation. Refer to 

TM-284, "Fail-safe"

.

Interview sheet can be used effectively when reproduce malfunction conditions. Refer to 

TM-299, "Diagnostic

Work Sheet"

.

Verify the relationship between the symptom and the conditions in which the malfunction described by the cus-
tomer occurs.

>> GO TO 6.

5.

PERFORM “DTC CONFIRMATION PROCEDURE”

Perform “DTC CONFIRMATION PROCEDURE” of the appropriate DTC to check if DTC is detected again.
Refer to 

TM-287, "DTC Inspection Priority Chart"

 when multiple DTCs are detected, and then determine the

order for performing the diagnosis.
Is any DTC detected?

YES

>> GO TO 7.

NO

>> Follow 

GI-44, "Intermittent Incident"

 to check.

6.

IDENTIFY MALFUNCTIONING SYSTEM WITH “DIAGNOSIS CHART BY SYMPTOM”

DIAGNOSIS AND REPAIR WORK FLOW

TM-299

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Use 

TM-395, "Symptom Table"

 from the symptom inspection result in step 4. Then identify where to start per-

forming the diagnosis based on possible causes and symptoms.

>> GO TO 8.

7.

REPAIR OR REPLACE THE MALFUNCTIONING PARTS

Repair or replace the detected malfunctioning parts.
Reconnect parts or connector after repairing or replacing, and then erase DTC if necessary.

>> GO TO 8.

8.

FINAL CHECK

Perform “DTC CONFIRMATION PROCEDURE” again to make sure that the repair is correctly performed.
Check that malfunctions are not reproduced when obtaining the malfunction information from the customer,
referring to the symptom inspection result in step 3 or 4.

Is DTC or malfunction symptom reproduced?

YES-1 (DTC is reproduced.)>>GO TO 5.
YES-2 (Malfunction is reproduced.)>>GO TO 6.
NO

>> Before delivering the vehicle to the customer, make sure that DTC is erased.

Diagnostic Work Sheet

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DESCRIPTION

There are many operating conditions that may cause a malfunction
of the transmission parts. By understanding those conditions prop-
erly, a quick and exact diagnosis can be achieved.
In general, perception of a problem varies depending on individuals.
Ask the customer about his/her concerns carefully. It is important to
understand the phenomenon or status. To systemize all the informa-
tion for the diagnosis, prepare the question sheet referring to the
question points.
In some cases, multiple conditions that appear simultaneously may
cause a DTC to be detected.

Worksheet Sample

SEF907L

Question sheet

Customer's 
name

MR/MS

Registration 
number

Initial year 
registration

Year

Month

day

Vehicle type

Chassis No.

Storage date

Year

Month

day

Engine

Mileage

km/mile

Symptom

†

 Vehicle does not start. (

†

 R position 

†

 D position 

†

 L position 

†

 M position)

†

 Upshifting does not occur. 

†

 Downshifting does not occur. 

†

 Lock-up malfunction

†

 Shift point is too high. 

†

 Shift point is too low.

†

 Shift shock (

†

 N

⇒

D

†

 Lock-up 

†

 R, D, L, and M)

†

 Slip (

†

 N

⇒

D

†

 Lock-up 

†

 R, D, L, and M)

†

Noise

†

 Vibration

When selector lever position is shifted, shift pattern does not change.

†

 Other

 (

) 

First occurrence

†

 Recently (as from month

 of year

)

Frequency of occurrence

†

 Always 

†

 Under certain conditions 

†

 Sometimes (

 time(s)/day)

TM-300

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DIAGNOSIS AND REPAIR WORK FLOW

Climate con-
ditions

Irrelevant

Weather

†

 Clear

†

 Cloud

†

 Rain

†

 Snow

†

 Others 

)

Temperature

†

 Hot

†

 Warm

†

 Cool

†

 Cold

†

 Temperature (Approx.

°

C/

°

F)

Relative humidity

†

 High

†

 Moderate

†

 Low

Transaxle condition 

†

 In cold-start 

†

 During warm-up (approx. 

°

C/

°

F)

†

 After warm-up 

†

Engine speed: 

rpm

Road conditions

†

 Urban area

†

 Suburb area

†

 Highway 

†

 Mountainous road (uphill or downhill) 

Operating condition, etc.

Irrelevant

†

 When engine starts

†

 During idling

†

 During driving

†

 During acceleration

†

 At constant speed driving

†

 During deceleration

†

 During cornering (RH curve or LH curve)

Other conditions

Question sheet

Customer's 
name

MR/MS

Registration 
number

Initial year 
registration

Year

Month

day

Vehicle type

Chassis No.

Storage date

Year

Month

day

Engine

Mileage

km/mile

ADDITIONAL SERVICE WHEN REPLACING TCM

TM-301

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ADDITIONAL SERVICE WHEN REPLACING TCM

Description

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Always perform the following items when the TCM is replaced.

TCM PROGRAMMING

• Since vehicle specifications are not yet written in a new TCM, it is necessary to write them with CONSULT.

CAUTION:

When replacing TCM, save TCM data on CONSULT before removing TCM.

SAVING AND WRITING OF TCM DATA

• TCM performs accurate control by retrieving data (inherent characteristic value) of each solenoid. For this

reason, it is necessary to save data of current TCM in CONSULT before replacing the TCM. After this, the
saved data must be written in new TCM.

Work Procedure

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1.

SAVE TCM DATA (IP CHARACTERISTICS VALUE)

NOTE:
Save necessary data stored in TCM in CONSULT according to the following instructions:

With CONSULT

1.

Turn ignition switch OFF.

2.

Connect all of disconnected connectors.

3.

Turn ignition switch ON.

4.

Select “Work Support” in “TRANSMISSION”.

5.

Select “READ IP CHARA - REPLACEMENT TCM”.

6.

Import data according to the instructions on the CONSULT screen.

>> GO TO 2.

2.

SAVE TCM DATA (VEHICLE SPECIFICATIONS)

NOTE:
Save necessary data stored in TCM in CONSULT according to the following instructions:

With CONSULT

1.

Turn ignition switch OFF.

2.

Turn ignition switch ON.

3.

Select “Re/programming, Configuration”.

4.

Select “AT/CVT”.
NOTE:
If “AT/CVT” is not displayed and TCM data cannot be saved on CONSULT, GO TO 3.

5.

Select “Programming”.

6.

Save TCM data on CONSULT according to the CONSULT display.

>> GO TO 3.

3.

REPLACE TCM

1.

Turn ignition switch OFF and wait for 10 seconds.

2.

Replace TCM. Refer to 

TM-415, "Removal and Installation"

.

>> GO TO 4.

4.

WRITE TCM DATA (VEHICLE SPECIFICATIONS)

NOTE:
Write data saved in CONSULT into a new TCM according to the following instructions:

With CONSULT

1.

Select “Programming”.

2.

Perform programming according to the CONSULT display.