NATS (Nissan Anti-Theft System) / Gasoline engine — Trouble Diagnoses (Cont'd) — Symptom Matrix Chart 1 (Supplement-VII)
EL-7063flowchartSymptom matrix mapping CONSULT-II terms to procedures and system reference letters. Key reference codes: A=IMMU, B=ECM, C1-C4=harness paths, D=key, E=key chip, F=init.
Trouble Diagnoses (Cont'd)
SYMPTOM MATRIX CHART 1 (Self-diagnosis related item)
Security indicator lighting up** / Engine does not start
Displayed 'SELF-DIAG RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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 RESULTS' 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.
Symptom-to-diagnosis-procedure matrix. Each CONSULT-II DTC term + symptom maps to a PROCEDURE on a specific page + a system reference letter (A=IMMU, B=ECM, C1-C4=harness sub-paths, D=key, E=key ID chip, F=init not complete).
Reference letters key to the diagnostic system diagram which will appear on subsequent pages.
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)