2014 NISSAN TEANA engine

EC-664
< WIRING DIAGRAM >[VQ35DE]
ENGINE CONTROL SYSTEM
ABBIA1798GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ENGINE CONTROL SYSTEMEC-665
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ABBIA1799GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-666
< WIRING DIAGRAM >[VQ35DE]
ENGINE CONTROL SYSTEM
ABBIA1800GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ENGINE CONTROL SYSTEMEC-667
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ABBIA1801GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-668
< WIRING DIAGRAM >[VQ35DE]
ENGINE CONTROL SYSTEM
ABBIA1802GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ENGINE CONTROL SYSTEMEC-669
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ABBIA1803GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

DIAGNOSIS AND REPAIR WORKFLOWEC-671
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ODETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
1. Get the detailed information from the custom er about the symptom (the condition and the environment
when the incident/malfunction occurred) using the “Diagnostic Work Sheet”. (Refer to EC-673, "Diagnostic
Work Sheet".)
2. Ask if the customer requests I/M examination.
Malfunction information, obtained>>GO TO 2.
No Malfunction information, but a request for I/M examination>>GO TO 13.
2.CHECK DTC
1. Check DTC of “All DTC Reading”.
2. Perform the following procedure if DTC is displayed.
- Record DTC and freeze frame data. (Pri nt them out with CONSULT or GST.)
- Erase only DTC of “ENGINE”.
With CONSULT: Refer to “How to Erase DTC and 1st Trip DTC” in EC-601, "CONSULT Function"
.
Without CONSULT: Refer to “How to Erase Self-diagnostic Results” in EC-598, "On Board Diagnosis
Function".
- Turn ignition switch OFF.
- Study the relationship between the cause detected by DTC and the symptom described by the customer.
(Symptom Table is useful. Refer to EC-987, "Symptom Table"
.)
3. Check related service bulletins for information.
Are any symptoms described and any DTCs 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 EC-991, "Description"
and EC-
627, "Fail-safe".
Diagnosis Work Sheet is useful to verify the incident.
Verify relation between the symptom and t he 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 EC-991, "Description"
and EC-
627, "Fail-safe".
Diagnosis Work Sheet is useful to verify the incident.
Verify relation between the symptom and t he condition when the symptom is detected.
>> GO TO 6.
5.PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC CONFIRMATION PROCEDURE for the di splayed DTC, and then make sure that DTC is
detected again.
If two or more DTCs are detected, refer to EC-629, "DTC Inspection Priority Chart"
and determine trouble
diagnosis order.
NOTE:
• Freeze frame data is useful if the DTC is not detected.
*1: Include 1st trip DTC.
*2: Include 1st trip freeze frame data.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-672
< BASIC INSPECTION >[VQ35DE]
DIAGNOSIS AND REPAIR WORKFLOW
• Perform Component Function Check if DTC CONFIR
MATION PROCEDURE is not included on Service
Manual. This simplified check procedure is an effect ive 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-43, "Intermittent Incident"
.
6.PERFORM BASIC INSPECTION
Perform EC-675, "Work Procedure"
.
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” , “MAS A/F SE-B2”, “B/FUEL SCHDL”, “A/F ALPHA-B1” and “A/F ALPHA-
B2” are within the SP value using CONSULT “SPEC” in “DATA MONITOR” mode of “ENGINE”. Refer to EC-
701, "Component Function Check".
Is the measurement value within the SP value?
YES >> GO TO 9.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART BY TROUBL E DIAGNOSIS - SPECIFICATION VALUE
Detect malfunctioning part according to EC-702, "Diagnosis Procedure"
.
Is a malfunctioning part detected?
YES >> GO TO 11.
NO >> GO TO 9.
9.DETECT MALFUNCTIONING SYST EM BY SYMPTOM TABLE
Detect malfunctioning system according to EC-987, "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 PA RT BY DIAGNOSIS PROCEDURE
Inspect according to Diagnos is 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 GI-46, "Circuit Inspec-
tion".
Is a malfunctioning part detected?
YES >> GO TO 11.
NO >> Monitor input data from related sensors or check voltage of related ECM terminals using CON-
SULT. Refer to EC-613, "Reference Value"
.
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: Refer to “How to Erase DTC and 1st Trip DTC” in EC-601, "CONSULT Function"
.
Without CONSULT: Refer to “How to Erase Self-diagnostic Results” in EC-598, "On Board Diagnosis
Function".
>> GO TO 12.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM