Nissan X-Trail 32. Manual — part 953
DIAGNOSIS AND REPAIR WORKFLOW
EC-941
< BASIC INSPECTION >
[R9M]
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>> GO TO 8.
8.
DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE
Inspect according to Diagnosis Procedure of the system.
NOTE:
The Diagnosis Procedure in EC section described based on open circuit inspection. A short circuit inspection
is also required for the circuit check in the Diagnosis Procedure. For details, refer to
.
Is malfunctioning part detected?
YES
>> GO TO 9.
NO
>> Monitor input data from related sensors or check voltage of related ECM terminals using CON-
SULT. Refer to
.
9.
REPAIR OR REPLACE THE MALFUNCTIONING PART
1.
Repair or replace the malfunctioning part.
2.
Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.
3.
Check DTC. If DTC is displayed, erase it. Refer to
EC-873, "Diagnosis Description"
>> GO TO 10.
10.
FINAL CHECK
When DTC was detected in step 2, perform DTC CONFIRMATION PROCEDURE or Component Function
Check again, and then make sure that the malfunction have been repaired securely.
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and make sure
that the symptom is not detected.
Is DTC detected and does symptom remain?
YES-1 >> DTC is detected: GO TO 8.
YES-2 >> Symptom remains: GO TO 6.
NO
>> Before returning the vehicle to the customer, make sure to erase unnecessary DTC in ECM.
Diagnostic Work Sheet
INFOID:0000000010935595
DESCRIPTION
There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about a incident. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the one on the next page in order
to organize all the information for troubleshooting.
Some conditions may cause the MIL to come on steady and DTC to
be detected. Examples:
• Vehicle ran out of fuel, which caused the engine to misfire.
• Fuel filler cap was left off or incorrectly screwed on, allowing fuel to
evaporate into the atmosphere.
SEF907L
EC-942
< BASIC INSPECTION >
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DIAGNOSIS AND REPAIR WORKFLOW
WORKSHEET SAMPLE
MTBL0017
SERVICE AFTER REPLACING OR REMOVING ENGINE PARTS
EC-943
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SERVICE AFTER REPLACING OR REMOVING ENGINE PARTS
Special Repair Requirement List
INFOID:0000000010935596
×
:Applicable
*1:Harness connector disconnection included.
Part name
Service performed
Required service
Reference
Replace-
ment
Removal
*1
ECM
×
—
Additional service when replacing ECM
Fuel injector
×
—
Injector adjustment value registration
Electric throttle control actuator
×
×
Throttle valve position learning
Exhaust electric throttle control
actuator
×
×
Exhaust throttle valve position learning
High pressure EGR volume con-
trol valve
×
×
High pressure EGR volume control valve position
learning
Low pressure EGR volume con-
trol valve
×
×
Low pressure EGR volume control valve position
learning
Intake manifold runner control
valve
×
×
Intake manifold runner control valve position learn-
ing
DPF (Diesel Particulate Filter)
×
—
DPF (Diesel Particulate Filter) data clear
High pressure fuel pump
×
—
Fuel pump learning value clearing
Starter motor
×
—
Starter motor operating counter clear
Engine oil
×
—
Oil change remaining distance reset
EC-944
< BASIC INSPECTION >
[R9M]
ADDITIONAL SERVICE WHEN REPLACING ECM
ADDITIONAL SERVICE WHEN REPLACING ECM
Description
INFOID:0000000010935597
When replacing ECM, this procedure must be performed.
NOTE:
The necessary operation is different depending on the operation result of ECM data save or write. Always per-
form the operation according to procedures. Refer to
Work Procedure
INFOID:0000000010935598
1.
SAVE ECM DATA
1.
Turn ignition switch OFF and wait at least 1 minute.
2.
Reconnect all harness connectors disconnected.
3.
Turn ignition switch ON.
4.
Select “SAVE COMPUTER DATA” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.
5.
Follow the instruction of CONSULT display.
NOTE:
Necessary data in ECM is copied and saved to CONSULT.
Is operation completed successfully?
YES
>> GO TO 2.
NO
>> GO TO 7.
2.
REPLACE ECM
1.
Turn ignition switch OFF and wait at least 1 minute.
2.
Replace ECM. Refer to
EC-1226, "Removal and Installation"
.
>> GO TO 3.
3.
PERFORM PROGRAMMING
Refer to “CONSULT Operation Manual”.
>> GO TO 4.
4.
PERFORM ECM KEY ID REGISTRATION
Refer to “CONSULT Operation Manual NATS-IVIS/NVIS”.
>> GO TO 5.
5.
PERFORM CONFIGURATION REGISTRATION
1.
Turn ignition switch OFF and wait at least 1 minute.
2.
Turn ignition switch ON.
3.
Check that the battery voltage is between 11 V and 14 V.
4.
Wait at least 10 seconds.
CAUTION:
During this step, never perform any vehicle operation.
5.
If necessary, perform configuration registration using CONSULT function.
>> GO TO 6.
6.
WRITE ECM DATA
1.
Select “WRITE SAVED DATA” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.
2.
Follow the instruction of CONSULT display.
NOTE:
The data saved by “WRITE SAVED DATA” is written to ECM.
Is operation completed successfully?
YES
>> GO TO 12.
NO
>> GO TO 10.
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