K11 Service ManualK11

Torque Specs Tools Parts Diagrams

NATS / Gasoline engine — Trouble Diagnoses (Cont'd) — Symptom Matrix Chart 1 (Self-diagnosis related item)

EL-7063spec table

Cross-reference letters A-F + C1-C4 point to the NATS diagnostic-system illustration (next pages). CHAIN-OF-ECM-IMMU has the longest 'system' list — it covers seven distinct fault modes in the IMMU↔ECM communication chain.

NATS (Nissan Anti-Theft System) / Gasoline engine

Trouble Diagnoses (Cont'd)

Symptom	Displayed "SELF-DIAG RESULS" on CONSULT-II screen	Diagnostic procedure (Reference page)	System (Malfunctioning part or mode)	Reference part no. of illustration on diagnostic system diagram
Security indicator lighting up** + Engine does not start	ECM INT CIRC-IMMU	PROCEDURE 1 (EL-7065)	ECM	B
Security indicator lighting up** + Engine does not start	CHAIN OF ECM-IMMU	PROCEDURE 2 (EL-7066)	In rare case, "CHAIN OF ECM-IMMU" might be stored during key registration procedure, even if the system is not malfunctioning.	—
Security indicator lighting up** + Engine does not start	CHAIN OF ECM-IMMU	PROCEDURE 2 (EL-7066)	Open circuit in battery voltage line of IMMU circuit	C1
Security indicator lighting up** + Engine does not start	CHAIN OF ECM-IMMU	PROCEDURE 2 (EL-7066)	Open circuit in ignition line of IMMU circuit	C2
Security indicator lighting up** + Engine does not start	CHAIN OF ECM-IMMU	PROCEDURE 2 (EL-7066)	Open circuit in ground line of IMMU circuit	C3
Security indicator lighting up** + Engine does not start	CHAIN OF ECM-IMMU	PROCEDURE 2 (EL-7066)	Open circuit in communication line between IMMU and ECM	C4
Security indicator lighting up** + Engine does not start	CHAIN OF ECM-IMMU	PROCEDURE 2 (EL-7066)	Short circuit between IMMU and ECM communication line and battery voltage line	C4
Security indicator lighting up** + Engine does not start	CHAIN OF ECM-IMMU	PROCEDURE 2 (EL-7066)	Short circuit between IMMU and ECM communication line and ground line	C4
Security indicator lighting up** + Engine does not start	CHAIN OF ECM-IMMU	PROCEDURE 2 (EL-7066)	ECM	B
Security indicator lighting up** + Engine does not start	CHAIN OF ECM-IMMU	PROCEDURE 2 (EL-7066)	IMMU	A
Security indicator lighting up** + Engine does not start	DIFFERENCE OF KEY	PROCEDURE 3 (EL-7068)	Unregistered key	D
Security indicator lighting up** + Engine does not start	DIFFERENCE OF KEY	PROCEDURE 3 (EL-7068)	IMMU	A
Security indicator lighting up** + Engine does not start	CHAIN OF IMMU-KEY	PROCEDURE 4 (EL-7069)	Malfunction of key ID chip	E
Security indicator lighting up** + Engine does not start	CHAIN OF IMMU-KEY	PROCEDURE 4 (EL-7069)	IMMU	A
Security indicator lighting up* + Engine hard to start	ID DISCORD, IMM-ECM	PROCEDURE 5 (EL-7070)	System initialization has not yet been completed.	F
Security indicator lighting up* + Engine hard to start	ID DISCORD, IMM-ECM	PROCEDURE 5 (EL-7070)	ECM	B
Security indicator lighting up* + Engine hard to start	LOCK MODE	PROCEDURE 6 (EL-7071)	LOCK MODE	D
Security indicator lighting up*	DON'T ERASE BEFORE CHECKING ENG DIAG	WORK FLOW (EL-7072)	Engine trouble data and NATS trouble data have been detected in ECM	—

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenECM INT CIRC-IMMU

Diagnostic procedure (Reference page)PROCEDURE 1 (EL-7065)

System (Malfunctioning part or mode)ECM

Reference part no. of illustration on diagnostic system diagramB

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF ECM-IMMU

Diagnostic procedure (Reference page)PROCEDURE 2 (EL-7066)

System (Malfunctioning part or mode)In rare case, "CHAIN OF ECM-IMMU" might be stored during key registration procedure, even if the system is not malfunctioning.

Reference part no. of illustration on diagnostic system diagram—

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF ECM-IMMU

Diagnostic procedure (Reference page)PROCEDURE 2 (EL-7066)

System (Malfunctioning part or mode)Open circuit in battery voltage line of IMMU circuit

Reference part no. of illustration on diagnostic system diagramC1

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF ECM-IMMU

Diagnostic procedure (Reference page)PROCEDURE 2 (EL-7066)

System (Malfunctioning part or mode)Open circuit in ignition line of IMMU circuit

Reference part no. of illustration on diagnostic system diagramC2

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF ECM-IMMU

Diagnostic procedure (Reference page)PROCEDURE 2 (EL-7066)

System (Malfunctioning part or mode)Open circuit in ground line of IMMU circuit

Reference part no. of illustration on diagnostic system diagramC3

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF ECM-IMMU

Diagnostic procedure (Reference page)PROCEDURE 2 (EL-7066)

System (Malfunctioning part or mode)Open circuit in communication line between IMMU and ECM

Reference part no. of illustration on diagnostic system diagramC4

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF ECM-IMMU

Diagnostic procedure (Reference page)PROCEDURE 2 (EL-7066)

System (Malfunctioning part or mode)Short circuit between IMMU and ECM communication line and battery voltage line

Reference part no. of illustration on diagnostic system diagramC4

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF ECM-IMMU

Diagnostic procedure (Reference page)PROCEDURE 2 (EL-7066)

System (Malfunctioning part or mode)Short circuit between IMMU and ECM communication line and ground line

Reference part no. of illustration on diagnostic system diagramC4

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF ECM-IMMU

Diagnostic procedure (Reference page)PROCEDURE 2 (EL-7066)

System (Malfunctioning part or mode)ECM

Reference part no. of illustration on diagnostic system diagramB

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF ECM-IMMU

Diagnostic procedure (Reference page)PROCEDURE 2 (EL-7066)

System (Malfunctioning part or mode)IMMU

Reference part no. of illustration on diagnostic system diagramA

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenDIFFERENCE OF KEY

Diagnostic procedure (Reference page)PROCEDURE 3 (EL-7068)

System (Malfunctioning part or mode)Unregistered key

Reference part no. of illustration on diagnostic system diagramD

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenDIFFERENCE OF KEY

Diagnostic procedure (Reference page)PROCEDURE 3 (EL-7068)

System (Malfunctioning part or mode)IMMU

Reference part no. of illustration on diagnostic system diagramA

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF IMMU-KEY

Diagnostic procedure (Reference page)PROCEDURE 4 (EL-7069)

System (Malfunctioning part or mode)Malfunction of key ID chip

Reference part no. of illustration on diagnostic system diagramE

Security indicator lighting up** + Engine does not start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenCHAIN OF IMMU-KEY

Diagnostic procedure (Reference page)PROCEDURE 4 (EL-7069)

System (Malfunctioning part or mode)IMMU

Reference part no. of illustration on diagnostic system diagramA

Security indicator lighting up* + Engine hard to start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenID DISCORD, IMM-ECM

Diagnostic procedure (Reference page)PROCEDURE 5 (EL-7070)

System (Malfunctioning part or mode)System initialization has not yet been completed.

Reference part no. of illustration on diagnostic system diagramF

Security indicator lighting up* + Engine hard to start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenID DISCORD, IMM-ECM

Diagnostic procedure (Reference page)PROCEDURE 5 (EL-7070)

System (Malfunctioning part or mode)ECM

Reference part no. of illustration on diagnostic system diagramB

Security indicator lighting up* + Engine hard to start

Displayed "SELF-DIAG RESULS" on CONSULT-II screenLOCK MODE

Diagnostic procedure (Reference page)PROCEDURE 6 (EL-7071)

System (Malfunctioning part or mode)LOCK MODE

Reference part no. of illustration on diagnostic system diagramD

Security indicator lighting up*

Displayed "SELF-DIAG RESULS" on CONSULT-II screenDON'T ERASE BEFORE CHECKING ENG DIAG

Diagnostic procedure (Reference page)WORK FLOW (EL-7072)

System (Malfunctioning part or mode)Engine trouble data and NATS trouble data have been detected in ECM

Reference part no. of illustration on diagnostic system diagram—

NOTE

*: When NATS detects trouble, the security indicator lights up while ignition key is in the "ON" position.

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See also

EL-7065NATS / Gasoline engine — Trouble Diagnoses (Cont'd) — Diagnostic Procedure 1 ("ECM INT CIRC-IMMU")EL-7066NATS / Gasoline engine — Trouble Diagnoses (Cont'd) — Diagnostic Procedure 2 ("CHAIN OF ECM-IMMU")EL-7068NATS / Gasoline engine — Diagnostic Procedure 3 ("DIFFERENCE OF KEY")EL-7069NATS / Gasoline engine — Diagnostic Procedure 4 ("CHAIN OF IMMU-KEY")EL-7070NATS / Gasoline engine — Diagnostic Procedure 5 ("ID DISCORD, IMM-ECM")EL-7071NATS / Gasoline engine — Diagnostic Procedure 6 ("LOCK MODE")EL-7072NATS (Nissan Anti-Theft System) / Gasoline engine — Trouble Diagnoses (Cont'd) — Diagnostic Procedure 7 (SECURITY IND. DOES NOT LIGHT UP) (Supplement-VII)