Nissan March K13. Manual — part 228
DIAGNOSIS AND REPAIR WORKFLOW
EC-373
< BASIC INSPECTION >
[HR12DE (TYPE 2)]
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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
>> 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.)
-
Erase DTC. (Refer to “How to Erase DTC and 1st trip DTC” in
EC-346, "Diagnosis Description"
-
Study the relationship between the cause detected by DTC and the symptom described by the customer.
(Symptom Table is useful. Refer to
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
and
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.
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
and
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.
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-365, "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
Do you have CONSULT-III?
EC-374
< BASIC INSPECTION >
[HR12DE (TYPE 2)]
DIAGNOSIS AND REPAIR WORKFLOW
YES
>> GO TO 7.
NO
>> GO TO 9.
7.
PERFORM “SPEC” IN DATA MONITOR MODE
With CONSULT-III
Make sure that “B/FUEL SCHDL” and “A/F ALPHA-B1” are within the SP value in “SPEC” of “DATA MONI-
TOR” mode with CONSULT-III. Refer to
EC-388, "Component Function Check"
Is the measurement value within the SP value?
YES
>> GO TO 9.
NO
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART BY TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Detect malfunctioning part according to
.
Is malfunctioning part detected?
YES
>> GO TO 11.
NO
>> GO TO 9.
9.
DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE
Detect malfunctioning system according to
based on the confirmed symptom in
step 4, and determine the trouble diagnosis order based on possible causes and symptom.
>> GO TO 10.
10.
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 11.
NO
>> Monitor input data from related sensors or check the voltage of related ECM terminals using CON-
SULT-III. Refer to
11.
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 “How to Erase DTC and 1st trip DTC” in
.
>> GO TO 12.
12.
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 10.
YES-2 >> Symptom remains: GO TO 6.
NO
>> Before returning the vehicle to the customer, make sure to erase unnecessary DTC in ECM.
(Refer to “How to Erase DTC and 1st trip DTC” in
EC-346, "Diagnosis Description"
Diagnostic Work Sheet
INFOID:0000000005886487
DESCRIPTION
DIAGNOSIS AND REPAIR WORKFLOW
EC-375
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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 an incident. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the WORKSHEET SAMPLE
below in order to organize all the information for troubleshooting.
WORKSHEET SAMPLE
SEF907L
MTBL0017
EC-376
< BASIC INSPECTION >
[HR12DE (TYPE 2)]
ADDITIONAL SERVICE WHEN REPLACING ECM
ADDITIONAL SERVICE WHEN REPLACING ECM
Description
INFOID:0000000006036892
When replacing ECM, this procedure must be performed.
Work Procedure
INFOID:0000000006036893
1.
PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS IGNITION KEY IDS
Refer to
SEC-36, "ECM : Work Procedure"
(With intelligent key system),
SEC-36, "ECM : Work Procedure"
(Without intelligent key system).
>> GO TO 2.
2.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
>> GO TO 3.
3.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
>> GO TO 4.
4.
PERFORM IDLE AIR VOLUME LEARNING
>> END
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