Nissan Versa Sedan. Manual — part 280
DIAGNOSIS AND REPAIR WORKFLOW
EC-119
< BASIC INSPECTION >
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NO
>> Check according to
GI-45, "Intermittent Incident"
.
6.
PERFORM BASIC INSPECTION
Perform
Do you have CONSULT?
YES
>> GO TO 7.
NO
>> GO TO 9.
7.
PERFORM “SPEC” IN DATA MONITOR MODE
With CONSULT
Make sure that “MAS A/F SE-B1”, “B/FUEL SCHDL” and “A/F ALPHA-B1” are within the SP value in “SPEC”
of “DATA MONITOR” mode with CONSULT. Refer to
EC-147, "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. 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.
With CONSULT: “How to Erase DTC and 1st Trip DTC” in
.
Without CONSULT: “How to Erase Self-diagnostic Results” in
EC-58, "On Board Diagnosis Function"
>> 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.
EC-120
< BASIC INSPECTION >
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DIAGNOSIS AND REPAIR WORKFLOW
NO-1 >> No request for I/M examination from the customer: Before returning the vehicle to the customer,
always erase unnecessary DTC in ECM and TCM ( With CONSULT: Refer to “How to Erase
DTC and 1st Trip DTC” in
, Without CONSULT: Refer to “How to
Erase Self-diagnostic Results” in
EC-58, "On Board Diagnosis Function"
NO-2 >> I/M examination, requested from the customer: GO TO 13.
13.
PREPARE FOR I/M EXAMINATION
1. Set SRT codes. Refer to
2. Erase permanent DTCs. Refer to
.
>> INSPECTION END
Diagnostic Work Sheet
INFOID:0000000009267030
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 symptoms. 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.
Some conditions may cause the MIL to illuminate or blink, 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
DIAGNOSIS AND REPAIR WORKFLOW
EC-121
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WORKSHEET SAMPLE
MTBL0017
EC-122
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ADDITIONAL SERVICE WHEN REPLACING ECM
ADDITIONAL SERVICE WHEN REPLACING ECM
Description
INFOID:0000000009267031
When replacing ECM, the following procedure must be performed. (For details, refer to
.)
PROGRAMMING OPERATION
NOTE:
After replacing with a blank ECM, programming is required to write ECM information. Be sure to follow the pro-
cedure to perform the programming.
Work Procedure
INFOID:0000000009267032
1.
CHECK ECM PART NUMBER
Check ECM part number to see whether it is blank ECM or not.
NOTE:
• Part number of blank ECM is 23703 -
×××××.
• Check the part number when ordering ECM or with the one included in the label on the container box.
Is the ECM a blank ECM?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
SAVE ECM PART NUMBER
Read out the part number from the old ECM and save the number, following the programming instructions.
Refer to “CONSULT Operation Manual”.
NOTE:
• The ECM part number is saved in CONSULT.
• Even when ECM part number is not saved in CONSULT, go to 3.
>> GO TO 3.
3.
PERFORM ECM PROGRAMMING
After replacing ECM, perform the ECM programming. Refer to “CONSULT Operation Manual”.
NOTE:
• Refer to
EC-463, "Removal and Installation"
for replacement of ECM.
• During programming, maintain the following conditions:
- Ignition switch: ON
- Electric load: OFF
- Brake pedal: Not depressed
- Battery voltage: 12 – 13.5 V (Be sure to check the value of battery voltage by selecting “BATTERY VOLT” in
“Data monitor” of CONSULT.)
>> GO TO 5.
4.
REPLACE ECM
Replace ECM. Refer to
EC-463, "Removal and Installation"
>> GO TO 5.
5.
PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS IGNITION KEY IDS
Refer to
SEC-50, "ECM : Work Procedure"
(WITH INTELLIGENT KEY SYSTEM) or
SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"
(WITHOUT INTELLIGENT
KEY SYSTEM).
>> GO TO 6.
6.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
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